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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



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FORM 10-K



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(Mark One)

|x | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

For the fiscal year ended December 31, 2006

Or



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

Commission file number: 000-51349



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Advanced Analogic Technologies Incorporated

(Exact Name of Registrant As Specified in Its Charter)



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|                                                               |  |                                        
|-------------------------------------------------------------- |  | ---------------------------------------
|Delaware                                                       |  | 77-0462930                             
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification Number)

830 East Arques Ave, Sunnyvale, CA 94085 (408) 737-4600

(Address of Principal Executive Offices, Including Zip Code and Telephone Number)

Securities registered pursuant to Section 12(b) of the Act:

Common
Stock, $0.001 Par Value

Securities registered pursuant to Section 12(g) of the Act: NONE



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Indicate by check mark if the
registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes ̈No  x

Indicate by check mark if the registrant is not
required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes ̈No  x

Indicate by check mark whether the registrant
(1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and
(2) has been subject to such filing requirements for the past 90 days.  Yes  x    No ̈

Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act
(Check one):



|                         |  |                      |  |                       
|------------------------ |  | -------------------- |  | ----------------------
|Large accelerated filer ̈ |  | Accelerated Filer  x |  | Non-accelerated filer ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Exchange Act.) Yes ̈No  x

The aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant as of the close of business on
June 30, 2006 was approximately $316,000,000. There were 44,262,283 shares of the Registrants common stock issued and outstanding as of January 31, 2007.

DOCUMENTS INCORPORATED BY REFERENCE

Part III incorporates by reference certain information from the
Registrants definitive proxy statement (the 2007 Proxy Statement) for the 2007 Annual Meeting of Stockholders to be filed on or before April 30, 2007.



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

TABLE OF CONTENTS



|         |  |                                                                                                                  |  |     
|-------- |  | ---------------------------------------------------------------------------------------------------------------- |  | ----
|         |  |                                                                                                                  |  | Page
|PART I  
|         |  |                                                                                                                 
|Item 1.  |  | Business                                                                                                         |  | 1   
|         |  |                                                                                                                 
|Item 1A. |  | Risk Factors                                                                                                     |  | 14  
|         |  |                                                                                                                 
|Item 1B. |  | Unresolved Staff Comments                                                                                        |  | 27  
|         |  |                                                                                                                 
|Item 2.  |  | Properties                                                                                                       |  | 27  
|         |  |                                                                                                                 
|Item 3.  |  | Legal Proceedings                                                                                                |  | 27  
|         |  |                                                                                                                 
|Item 4.  |  | Submission of Matters to a Vote of Security Holders                                                              |  | 28  
|        
|PART II 
|         |  |                                                                                                                 
|Item 5.  |  | Market for the Registrants Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities |  | 29  
|         |  |                                                                                                                 
|Item 6.  |  | Selected Financial Data                                                                                          |  | 30  
|         |  |                                                                                                                 
|Item 7.  |  | Managements Discussion and Analysis of Financial Condition and Results of Operations                            |  | 31  
|         |  |                                                                                                                 
|Item 7A. |  | Quantitative and Qualitative Disclosures About Market Risk                                                       |  | 46  
|         |  |                                                                                                                 
|Item 8.  |  | Financial Statements and Supplementary Data                                                                      |  | 47  
|         |  |                                                                                                                 
|Item 9.  |  | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure                             |  | 79  
|         |  |                                                                                                                 
|Item 9A. |  | Controls and Procedures                                                                                          |  | 79  
|        
|PART III
|         |  |                                                                                                                 
|Item 10. |  | Directors, Executive Officers of the Registrant and Corporate Governance                                         |  | 83  
|         |  |                                                                                                                 
|Item 11. |  | Executive Compensation                                                                                           |  | 83  
|         |  |                                                                                                                 
|Item 12. |  | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters                   |  | 83  
|         |  |                                                                                                                 
|Item 13. |  | Certain Relationships, Related Transactions and Director Independence                                            |  | 83  
|         |  |                                                                                                                 
|Item 14. |  | Principal Accounting Fees and Services                                                                           |  | 83  
|        
|PART IV 
|         |  |                                                                                                                 
|Item 15. |  | Exhibits, Financial Statement Schedules                                                                          |  | 84  
|         |  |                                                                                                                 
|         |  | Signatures                                                                                                       |  | 86  



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FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K contains forward-looking statements. When used in this Form 10-K the words anticipate, objective,
may, might, should, could, can, intend, expect, believe, estimate, predict, potential, plan, is
designed to or the negative of these and similar expressions identify forward-looking statements. Forward-looking statements include, but are not limited to, statements about:



| |  |  | our expectations regarding our expenses, sales and operations;
| | - |  | --------------------------------------------------------------



| |  |  | our anticipated cash needs and our estimates regarding our capital requirements and our need for additional financing;
| | - |  | ----------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to anticipate the future needs of our customers;
| | - |  | ------------------------------------------------------------



| |  |  | our plans for future products and enhancements of existing products;
| | - |  | --------------------------------------------------------------------



| |  |  | our growth strategy elements;
| | - |  | -----------------------------



| |  |  | our increased headcount as we expand our operations;
| | - |  | ----------------------------------------------------



| |  |  | our intellectual property;
| | - |  | --------------------------



| |  |  | our anticipated trends and challenges in the markets in which we operate; and
| | - |  | -----------------------------------------------------------------------------



| |  |  | our ability to attract customers.
| | - |  | ---------------------------------

These statements reflect our current views with respect to future events and are based on assumptions and subject to risk and uncertainties. Given these uncertainties, you should not place undue reliance on these forward-looking statements.
While we believe our plans, intentions and expectations reflected in those forward-looking statements are reasonable, we cannot assure you that these plans, intentions or expectations will be achieved. Our actual results, performance or achievements
could differ materially from those contemplated, expressed or implied by the forward-looking statements contained in this Annual Report on Form 10-K, including those under the heading Risk Factors.

All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the cautionary statements
set forth in this Annual Report on Form 10-K. Other than as required by applicable laws, we are under no obligation to update any forward-looking statement, whether as result of new information, future events or otherwise.

This Annual Report on Form 10-K also contains statistical data that we obtained from industry publications and reports generated by Strategy Analytics,
iSuppli Corporation, or iSuppli, and Global Insight Inc. These industry publications and reports generally indicate that the information contained therein was obtained from sources believed to be reliable, but do not guarantee the accuracy and
completeness of such information. Although we believe that the publications and reports are reliable, we have not independently verified the data.



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PART I

ITEM 1. BUSINESS

Overview

We are a supplier of power management semiconductors for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras and personal media players. We focus
our design and marketing efforts on the application-specific power management needs of consumer, communications and computing applications in these rapidly-evolving devices. Through our Total Power Management approach, we offer a broad range of
products that support multiple applications, features and services across a diverse set of mobile consumer electronic devices. We sell directly to original equipment manufacturers, or OEMs, including LG Electronics, Inc., Samsung Electronics Co.,
Ltd., Sagem SA, Pantech & Curitel Communications, Inc., Motorola, Inc. and Sony Ericsson. We sell through distributors and original design manufacturers, or ODMs, to other system designers, including Hewlett-Packard Company, Dell Inc.,
Lenovo Group Ltd., Quanta Computers Inc., HTC Corporation and Compal Electronics, Inc.

Industry Background

Mobile Consumer Electronic Devices

The market for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras and personal media players, is large and growing rapidly as functionality increases and prices
decrease. As an example, wireless handsets, which can incorporate multiple applications such as digital cameras, digital audio, polyphonic ring tones, text messaging, internet access and decorative lighting, are among the most widely adopted
electronic devices today. According to Strategy Analytics, a market research firm, mobile phone sales have now passed the one billion level in 2006 (Strategy Analytics Press Release, January 25, 2007).

A diverse range of mobile consumer electronic devices is being manufactured in high volume, particularly in the Asia-Pacific region. This region offers
competitive manufacturing costs and extensive product development resources. According to Global Insight, an economic research firm, the Asia-Pacific region is one of the fastest growing economic regions in the world, and we believe an increasing
number of electronic products are being designed there especially for domestic consumption in Peoples Republic of China (China), Republic of China (Taiwan), Japan and Republic of Korea (South Korea).

New services for mobile consumer electronic devices, such as digital music downloads, video downloads, video messaging, video streaming, Mobile TV,
Global Positioning System-based personal navigation, and web-based gaming, are helping drive consumer demand for these devices worldwide. These new services are becoming more robust, affordable and accessible on wireless handsets, smartphones and
other devices with connectivity to high-bandwidth, next-generation wireless networks such as HSPSD and HSDPA. Certain applications and features that facilitate use of these services, such as high-quality color displays and high-capacity memory for
photos, music, video including TV content, games and other content, have already become broadly accepted and, we believe, expected by many consumers. In response to these market dynamics, manufacturers of mobile consumer electronic devices and
service providers marketing these devices are incorporating an increasing number of applications, features and services.

As the number of
applications, features and services available for mobile consumer electronic devices has increased, the number and variety of power loads, or individual subsystems requiring voltage regulation, has also grown. Each additional application or feature
can require multiple functions and circuits that, in turn, require more individually-regulated and managed power sources. For example, the addition of a camera into a mobile consumer electronic device requires powering as many as three additional
regulated power loads: a photo-flash light, a camera image sensor and an image processor. Convergent devices that combine many consumer, communications and computing applications into a single device, such as a smartphone, incorporate even greater



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functionality and must accommodate as many as twenty different power loads. All of these additional loads reduce battery life, the duration of which is an
important element of consumer satisfaction, as they each draw power for operation. Additional power is consumed and battery life reduced if components that supply and regulate power to all of these various power loads are inefficient. Therefore,
high-performance power management semiconductors that extend battery life by improving power efficiency have become key enablers of mobile consumer electronic device functionality.

Power Management Semiconductors

Power management semiconductors deliver power and regulate voltage, controlling the flow of electrical energy among the various power loads and energy sources in a product or system. Power management semiconductors play a crucial role in
system design because they are critical to battery life and impact the size and performance of a mobile consumer electronic device. According to iSuppli, a market research firm, the voltage regulator and reference power management semiconductor
market is expected to grow from $6.1 billion in 2005 to $11.6 billion in 2009, a compound annual growth rate of 17.3%. We believe that demand for power management and voltage regulation in mobile consumer electronic devices will increase.

Power management semiconductors vary in functionality, application specificity, design, pricing and volume of sales and may be categorized
as follows:



| |  |  | General Purpose Analog ICs: The most basic analog semiconductor components, general purpose analog ICs, are analog building blocks such as voltage references
and amplifiers used to perform generic analog and power management functions. Sold through broad-line semiconductor parts catalogs, general purpose analog ICs address standard functions with little differentiation and compete primarily on the basis
of price and availability. These products typically are bought and sold with little interaction between the system designer and semiconductor supplier.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Power Management ASSPs: Power management application-specific standard products, or Power Management ASSPs, integrate multiple analog building blocks and are
designed to focus on specific, narrowly defined applications such as battery charging and backlight drive to achieve the desired balance of cost and performance for a given application. More highly integrated Power Management ASSPs occupy less space
than the analog ICs they replace, and provide system designers efficiency and performance benefits associated with products focused on a specific application or a narrow group of applications. Power Management ASSPs are integrated into systems with
a wide range of varying parameters and as a result typically require closer collaboration between the system designer and semiconductor supplier than general purpose analog ICs. Power Management ASSPs are used extensively in todays mobile
consumer electronic devices.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | PowerSOCs: Power system-on-chip integrated circuits, or PowerSOCs, a relatively new concept in Power Management ASSP design, integrate multiple analog
functions with digital control and memory to provide new features and cost-effective performance improvements. PowerSOCs may utilize user-defined or software-based programmability for even greater customer-specific customization, but can be sold to
multiple customers and into multiple markets. PowerSOCs mix multiple application-oriented functions, such as voltage regulation, backlight drive and battery charging, into a single semiconductor chip to achieve smaller size, lower noise and higher
efficiency. Due to the high cost of manufacturing PowerSOCs using currently available wafer fabrication technologies, PowerSOCs have thus far only been used in limited applications.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Compared to general purpose analog ICs, Power Management ASSPs are more application-specific and integrate more functions while addressing the broad
mobile consumer electronic device market. Although more specialized semiconductor architectures exist, they are typically custom designed for, and limited to, a single application for a single customer. As an alternative to such expensive
customer-specific semiconductor design, we believe that user-programmable PowerSOCs can provide high-performance application and customer-specific features.



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Power Management Semiconductor Design and Fabrication

Power management semiconductors are designed primarily as analog circuits to support a wide and continuous range of input and output voltages and
currents. In mobile consumer electronic devices, the voltage and current of the battery or other power source, or input, may vary significantly, but the output of a power management semiconductor must be regulated to specific levels. Power
management semiconductors in these devices generally operate at varying input voltages in the range of three to six volts and in some circumstances as high as forty volts. Other applications may operate with input voltages as low as one volt. Output
voltages, however, must be regulated in narrower ranges. For example, light emitting diodes, or LEDs, typically require three to four volts and a power management semiconductor called a charge pump may be required to provide adequate power as the
battery voltage declines over time. In contrast, digital semiconductors including logic, digital signal processors, memory, image processors, baseband processors and microprocessors typically operate at three volts or less.

Several different process technologies are available for designing and fabricating analog and digital ICs. Of these, complementary
metal-oxide-semiconductor, or CMOS, is the most widely used process technology, especially for purely digital ICs. CMOS processes are described in terms of feature size, or geometry, and are measured in microns. One micron equals one millionth of a
meter. The most advanced process technologies achieve feature sizes of 0.18 micron, 0.13 micron and smaller. However, small feature size circuits can become damaged when exposed to high voltages and therefore power management semiconductors are
typically fabricated using larger feature sizes. For this reason, older wafer fabs, having feature sizes of 0.5 micron and 0.8 microns or greater, have traditionally sufficed in fabricating power management ICs, while the most advanced, and
most expensive wafer fabs are used for digital ICs and non-power management analog ICs.

During the late 1990s, many formerly
state-of-the-art wafer fabs designed to produce dynamic random access memory, or DRAM, at the 0.5 micron and 0.35 micron feature size began to be replaced by newer wafer fabs capable of even smaller feature sizes. These older DRAM wafer fabs, which
are generally fully depreciated, have become available on a specialty foundry basis.

Advanced analog CMOS comprises half-micron CMOS
similar to its digital counterpart, but is tailored and characterized for implementing up to five-volt analog circuits with higher performance and smaller die size than previously available in larger-geometry analog CMOS processes. We believe that
there are only a limited number of wafer fabs with advanced analog CMOS process technology that are already characterized and ready for high-volume manufacturing. In addition, significant expertise is required to design analog circuits in advanced
analog CMOS.

Despite its advantages in size, advanced analog CMOS shares certain disadvantages with older CMOS process technologies for
the development of power management semiconductors. Both processes lack the ability to have groups of transistors on a single IC operating at different voltages without affecting each other. The result is ICs that are voltage-specific, meaning they
operate over a narrow voltage range. Another disadvantage is that both CMOS and advanced analog CMOS are generally limited to operation at less than six volts. We believe that there is an emerging demand, driven by the increasing number of
applications and features in mobile consumer electronic devices, for power management devices that are capable of supporting both multiple voltages and voltages that exceed six volts. While a few mixed-voltage processes exist, they are not well
suited for analog circuitry since they are also limited in their maximum voltage and useful operating voltage range as well as lacking certain other important features which are useful for implementing precision analog circuits.

We believe that one or more new process technologies will be required to support multi-voltage and higher-voltage power management semiconductors. In
order to develop such a process technology, a number of requirements must be satisfied, including the need for device and process expertise in advanced analog CMOS or other analog process technologies, process compatibility with low-cost
sub-half-micron fabs and power management semiconductor design expertise.



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The AnalogicTech Approach

We are a supplier of power management semiconductors for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras and personal media players. We focus
our design and marketing efforts on the application-specific power management needs of consumer, communications and computing applications in these rapidly-evolving devices. Through our Total Power Management approach, we offer a broad range of
products that support multiple applications, features and services across a diverse set of mobile consumer electronic devices. We target our design efforts on proprietary products, which at the time we introduce them offer characteristics that
differentiate them from those offered by our competitors and which we believe are likely to generate high-volume demand from multiple customers.

We currently offer an extensive portfolio of over 530 power management products comprising Power Management ASSPs and selected general-purpose Analog ICs in single-chip packages and multi-chip packages. Our first PowerSOC products are under
development. Critical elements in power management and our approach to address them include:



| |  |  | Focusing on the market for mobile consumer electronic devices: Our market is characterized by rapid innovation and frequent new product releases for a
diverse set of devices, including wireless handsets, notebook and tablet computers, smartphones, digital cameras and personal media players. These devices often compete on an array of different applications, features and services. These factors make
it challenging to identify application parameters, forecast application adoption and define power management semiconductor products.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our approach: Through a network of offices located in South Korea, China, Taiwan, Japan, Europe and the United States, our technical salespeople and field applications engineers, or FAEs, work with the
system design, engineering and procurement groups of our customers and potential customers to identify future product needs. Based on these ongoing global customer interactions, we establish engineering priorities for new product design and
development. We believe our global focus on power management semiconductors for mobile consumer electronic devices enables us to anticipate customer and market requirements for these devices more quickly and thoroughly than local suppliers and more
diversified semiconductor suppliers.



| |  |  | Developing advanced power management semiconductors: Power management semiconductors must be defined and designed to compete on the basis of functional
integration, size, efficiency, features, cost, ease-of-use for system designers and their ability to be integrated into a system, package or chip.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our approach: We integrate functions from our general purpose analog ICs into our Power
Management ASSPs and, in the future, our PowerSOCs. Our experienced analog semiconductor engineering team designs our products to be characterized by high functional integration, small size, high efficiency, robust features, low cost, ease of use
and system integration. Our application and market-focused engineering approach has enabled us to develop a number of innovations and proprietary technologies that are of particular benefit for mobile consumer electronic device power management. One
example of our innovative design approach is our proprietary simple-serial-control interface, or S2Cwire and
AS2Cwire, which allows system designers to enable real-time user control of various features such as LED backlight
dimming, adjustable battery charging and programmable-output voltage regulators.



| |  |  | Combining advanced analog CMOS with small packages: As mobile consumer electronic devices support more applications, features and services with limited space
and limited battery capacity, it is becoming increasingly important to offer smaller, higher-efficiency power management semiconductors, assembled in area-efficient packages, and requiring fewer components to use.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our approach: To provide smaller products with higher integration and efficiency, we have implemented an outsourced fabrication model to
manufacture our products at half-micron geometries and below. Specifically, we contract with specialty foundries that have former DRAM fabs employing advanced analog CMOS process technology. We have spent significant time and engineering resources



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collaborating with our suppliers to simulate, characterize, and, as necessary, adapt these processes to enable us to design and develop our advanced analog
CMOS products for higher performance and smaller die size. We also capture the operational and financial benefits of the fabless model, including reduced manufacturing personnel, capital expenditures, fixed assets and fixed costs. We use and develop
area-efficient and multi-chip packages to meet more complex power management needs in a smaller footprint.



| |  |  | Total Power Management approach: Designing and manufacturing any modern mobile consumer electronic device requires system design expertise, adequate time and
other resources as well as effective management of multiple suppliers. Furthermore, each mobile consumer electronic device can have many power loads and each load may have different power management characteristics. These system design and
manufacturing requirements and variety of power loads create resource burdens on our customers, system designers and manufacturers.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our approach: Our Total Power Management strategy is intended to provide our customers with products for most or all of their power management requirements for each mobile consumer electronic device
on which we focus. We believe our broad range of Power Management ASSPs and components derived from our general purpose analog ICs offers a system-level solution to our customers power management requirements, saves space and reduces component
count in the system, and offers a single vendor solution for certain mobile consumer electronic devices. We believe that our PowerSOC solutions currently in development will integrate a wide variety of power management functions, offering improved
efficiency, smaller size and real-time user control of their power consumption and power performance.



| |  |  | Inventing multi-voltage and high-voltage process technology: The need to manage different power loads at different voltages cost-effectively is an emerging
requirement in the power management semiconductor market for next-generation mobile consumer electronic devices. Current multi-voltage solutions are either large multi-chip packaging solutions or complex single-chip isolated ICs that are expensive
and difficult to manufacture. We believe that power management semiconductor suppliers will therefore need to develop new approaches employing more advanced process technologies and cost effective manufacturing techniques, especially to implement
highly integrated power management products.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our approach: To address multi-voltage, high-voltage and PowerSOC
power management products, we invented and patented a new process which we call ModularBCD. This process is designed especially for fabrication in former DRAM fabs 0.35 microns and smaller and is capable of integrating CMOS and bipolar circuits with
different voltages, electrically isolated from one another. ModularBCD supports device operation up to thirty volts. We currently have 20 new products in development that use the ModularBCD process. The first 3 products launched in 2006 are 5-volt
products, such as a charger for Bluetooth headsets now in high volume mass production.

Products

We introduce products to address new market opportunities and to continue to improve the functional integration, size, efficiency, features, cost, ease of
use and system integration of our solutions. We have developed a comprehensive product portfolio. Our goal is to provide our customers with proprietary, high-performance products, but have also developed a number of relatively basic products in
order to provide a more complete power management solution for our customers. While we operate in one reportable segment, our product portfolio includes four principal product lines:



| |  |  | Voltage regulation and DC/DC converter products encompass switching regulators, linear regulators, or charge pumps used for regulating DC voltages.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Battery management products address the charging, sequencing, and protection of batteries.
| | - |  | ------------------------------------------------------------------------------------------



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| |  |  | Display and lighting products include LED drivers for display backlighting, fashion lighting, OLED supplies, camera flash and movie mode lighting typically using
either a boost converter or charge pump.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Interface and power management products include power saving load switches, port protection, sequencing, and other power management and protection functions.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------

Examples of products we have sold, currently sell or are developing in each of our product lines include:

AnalogicTech Products



|                                        |  |                                                                        |  |                                                                                                                                                                                                                 
|--------------------------------------- |  | ---------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Product Family                          |  | Description                                                            |  | Representative Applications                                                                                                                                                                                     
|Voltage Regulation and DC/DC
Conversion |  |                                                                       
|                                        |  |                                                                       
|PowerLinear                             |  | MicroPower low-dropout (LDO) linear regulators                         |  |       Baseband, and RF supplies in handsets & handheld
devices        Low noise supplies in cable & DSL modems, notebook and tablet PCs                                                                       
|                                        |  |                                                                       
|                                        |  | NanoPower low-dropout (LDO) linear regulators                          |  |       Memory, clocks, logic in notebooks, handsets, handheld devices, watches and
games                                                                                                                        
|                                        |  |                                                                       
|ChargePump                              |  | Low-noise small-footprint inductorless DC-to-DC converters and drivers |  |       USB On-The-Go (OTG) self-powered interface for handheld devices, handsets, calculators and POS
terminals                                                                                                 
|                                        |  |                                                                       
|SwitchReg                               |  | High-frequency DC-to-DC switching regulators                           |  |       Small footprint voltage regulation for handsets &
handheld devices        High-current voltage regulation for peripherals, modems, set top boxes and computers                                          
|                                        |  |                                                                       
|SystemPower                             |  | Multi-channel system solutions                                         |  |       DSP, baseband and microprocessor core and I/O power for handsets
and handheld devices        Monolithic power management unit (PMU) for digital still cameras                                           
|                                        | 
|Battery
Management                      |  |                                                                       
|                                        |  |                                                                       
|BatteryManager                          |  | Linear & switching battery chargers and battery condition monitoring   |  |       Single-cell Lithium-Ion battery chargers for handsets and handheld
devices (MP3, DSC, PDA)        Over-voltage protected charger        4-cell LiIon charger for notebook and tablet PCs and tablet TVs
|                                        |  |                                                                       
|SmartSwitch                             |  | Protection against short circuit and wrong charger                     |  |       Dedicated over-voltage protection (OVP)        Current
limiting                                                                                                                                         



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|                               |  |                                                                        |  |                                                                                                                                                                                                                                                                                                                                    
|------------------------------ |  | ---------------------------------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Product Family                 |  | Description                                                            |  | Representative Applications                                                                                                                                                                                                                                                                                                        
|Display and Lighting
Solutions |  |                                                                       
|                               |  |                                                                       
|ChargePump                     |  | Low-noise small-footprint inductorless DC-to-DC converters and drivers |  |       White LED backlighting for color LCD displays in handheld devices,
handsets, and display modules        Camera flash with movie-lighting for camera and smart phones        RGB decorative lighting and caller ID features        RGB music lighting
for digital audio & media players        RGB color keypad backlight
|                               |  |                                                                       
|SwitchReg                      |  | High-frequency DC-to-DC switching regulators                           |  |       High output voltage boost converters for white LED backlight
displays including driving multiple series-parallel connected LEDs in large-format LCDs        High output voltage boost converters for powering organic LED displays including both
passive-matrix (PM-OLED) and active-matrix (AM-OLED) types               
|                               | 
|Interface and Power
Management |  |                                                                       
|                               |  |                                                                       
|SmartSwitch                    |  | Self-protecting current-limiting switch                                |  |       USB port protection for notebook and tablet PCs, mobile phones,
games, desktops, servers and USB hubs        Hot plugging protection of PC boards & modules        Safe hot plugging of PCMCIA Cards, Express Cards and compact-flash (CF)
cards                                                                          
|                               |  |                                                                       
|                               |  | Slow-turn-on power saving load switch                                  |  |       Intelligent power switch of RF power amp in handsets and handheld
communicators        Power saving switch in DSCs, PDAs, MP3s and other handheld devices                                                                                                                                                                  
|                               |  |                                                                       
|FastSwitch                     |  | High-speed single and push-pull switches with input buffer             |  |       Power output of high frequency switching regulators in handsets
and handheld devices        High-speed buffer for driving discrete power MOSFETs in power supply modules        Half-bridge driver for small motor driving                                                                                                



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|               |  |                                                        |  |                                                                                                 
|-------------- |  | ------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------
|Product Family |  | Description                                            |  | Representative Applications                                                                     
|               |  |                                                       
|LoadSwitch     |  | Low-resistance P-channel power MOSFET switches         |  |       P-ch single and dual power saving load switches for handsets and handheld devices
(20V)  
|               |  |                                                       
|PowerManager   |  | Voltage detectors, timers and microprocessor reset ICs |  |       Reset, timing, and power-up sequencing of set top boxes, DVD, hard drives and
peripherals

Customers, Sales and Marketing

We work directly with system designers to create demand for our products by providing them with application-specific product information for their system
design, engineering and procurement groups. Our FAEs actively engage these groups during their design processes to introduce them to our products and the target applications our products address. We endeavor to design products that will meet
anticipated, increasingly complex and specific design requirements, but which will also support widespread demand for these products and future products derived from these products. We typically undertake a four to eight month development process
with system designers. If successful, this process culminates in a system designer deciding to use our product in their system, which we refer to as a design win. Volume production of products that use our ICs generally takes an additional three to
six months after an initial design win confirmation. Once our products are accepted and designed into an application, the system designer is likely to continue to use the same power architecture and derivative products in a number of their models,
which tends to extend our product lifecycles. We sell directly to original equipment manufacturers, or OEMs, including LG Electronics, Inc., Samsung Electronics Co., Ltd., Sagem SA, Pantech & Curitel Communications, Inc., Motorola,
Inc. and Sony Ericsson. We sell through distributors and original design manufacturers, or ODMs, to other system designers, including Hewlett-Packard Company, Dell Inc., Lenovo Group Ltd., Quanta Computers Inc., HTC Corporation and Compal
Electronics, Inc.

We sell our products through our direct sales and applications support organization to original equipment manufacturers,
original design manufacturers and contract electronics manufacturers, as well as through arrangements with distributors that fulfill third-party orders for our products. Many of our current distributors also serve as sales representatives procuring
orders for us to fill directly. We receive a substantial portion of our revenues from a small number of customers. We received an aggregate of approximately 80% of our revenues from our ten largest customers in 2006 and 2005. Our largest direct
customer in 2006 and 2005 was LG, which accounted for 28% and 37% of our revenues for 2006 and 2005, respectively. In addition, one distributor accounted for 11% of our revenues in 2005. No single distributor accounted for more than 10% of our
revenues in 2006 and no single ODM or contract electronics manufacturer accounted for more than 10% of our revenues in 2006 and 2005. End users of our products purchasing from us directly accounted for 56% and 50% of our revenues in 2006 and 2005,
respectively, while distributors, original design manufacturers and contract electronics manufacturers accounted for 44% and 50% of our revenues in 2006 and 2005, respectively.

Our technical global sales and field applications force is organized in regional teams, each with a minimum core of three people including one country
manager, one customer service representative and at least one FAE. As we have grown, we have continued to add more FAEs. We have added additional customer service personnel in regions where we ship directly to an OEM, particularly in South Korea. In
addition to creating the initial demand for our products, each regional team is responsible for increasing demand from distributors, original design manufacturers, contract manufacturers and end users. As of December 31, 2006, we had a total of
70 sales and marketing personnel worldwide.

We operate sales offices in: Seoul, South Korea; Taipei, Taiwan; Tokyo, Japan; Shanghai,
China; Shenzhen, China; Beijing, China; Hong Kong, Special Administrative Region of the Peoples Republic of China (Hong Kong); Sunnyvale, California; Raleigh, North Carolina; Stockholm, Sweden; London, England; and Paris,



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France. Sunnyvale is both our corporate and North American sales headquarters, Shanghai is our sales headquarters for China, and Stockholm is our sales
headquarters for Europe, the Middle East and Africa. We use this network of offices and staff, with the support of distributors and representatives, to stay close to system designers and our other customers and remain current on the newest global
technology developments through the sharing of customer visit reports. See Note 10 to the Consolidated Financial Statements for our revenues and long-lived assets by geographic regions.

Manufacturing and Operations

We use third-party foundries and assembly and test subcontractors to
manufacture, assemble and test our products. To provide smaller products with higher integration and efficiency, we have implemented an outsourced fabrication model to manufacture our products at half-micron geometries and below. Specifically, we
contract with specialty foundries that have former DRAM fabs employing advanced analog CMOS process technology. We have spent significant time and engineering resources collaborating with our suppliers to simulate, characterize, and, as necessary,
adapt these advanced analog CMOS processes to enable us to design and develop our advanced analog CMOS products for higher performance and smaller die size. We also capture the operational and financial benefits of the fabless model, including
reduced manufacturing personnel, capital expenditures, fixed assets and fixed costs. Relative to other fabless companies that use CMOS foundries, we believe that our use of fully-depreciated DRAM fabs allows us to achieve lower costs using advanced
analog CMOS processes today and will allow us to employ specialized process technologies, such as our ModularBCD, in the future, in order to maximize device performance for a given application.

We are able to take advantage of the lower costs and increased manufacturing capacity of former DRAM fabs because we have the expertise in analog and
power management design and process technology required to utilize the advanced equipment found in DRAM facilities for the fabrication of our power management products. We believe the IC process technologies we use achieve high levels of performance
and monolithic integration of mixed-signal, or analog with digital, analog and power management circuitry and offer superior characteristics in noise, high-frequency operation, high-current capability and ability to survive adverse electrical and
thermal conditions. To achieve a greater degree of customer specificity while maintaining economies of scale in manufacturing, we employ a variety of production adjustments and modifications to our products. Our process integration team in our Hong
Kong office works onsite at these former DRAM fabs to oversee the manufacturing of our products.

We use third-party contractors, primarily
in Taiwan, to perform wafer probe. The probed wafers are then shipped to our back-end suppliers assembly and test manufacturing locations in Taiwan, Shanghai or Malaysia. Back-end logistics and engineering support is performed through our
operations team in Chupei, Taiwan. Finished goods inventory is stored and shipped world-wide from Hong Kong by a third-party service provider on our behalf. All scheduling is internally communicated globally via our virtual private network and
web-based enterprise resource planning system.

In addition to innovative manufacturing processes, we also work with our packaging
contractors to develop innovative packaging solutions that make use of new assembly methods and new high performance packaging materials to improve area efficiency, optimize thermal and electrical performance, reduce package size and offer
ease-of-use and cost efficiency. We use area-efficient and multi-chip packages to meet more complex power management needs in a smaller footprint.

Combining innovative process and packaging technologies enables us to produce cost-effective products with many competitive advantages, including high functional integration, small size, high efficiency, robust features, low cost, ease of
use and system integration. In many instances, chip size reductions through advanced wafer fabrication make it possible to shrink a chip to fit into a smaller, cheaper package, reducing both die and package cost. When the resulting smaller footprint
product is sold into space-conscious applications like wireless handsets and smartphones, the smaller product generally commands a higher market price.



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In April 2005, Samsung Electronics designated us as an Eco-Partner Affiliate Company, which means that we
have fulfilled Samsungs standards for controlling substances with environmental impacts within our products and for establishing a stable environmental quality control system. We believe that our customers and potential customers will
recognize this designation as a favorable industry certification.

We have completed transitioning certain of our logistics, order entry,
purchasing and billing functions to our new office in Macau, Special Administrative Region of the Peoples Republic of China (Macau).

Research and
Development

We focus our research and development efforts on design, process technology and packaging innovation. We have assembled a
team of highly skilled engineers who have strong design expertise in analog, mixed-signal and power applications. Our staffs core competencies include high-frequency conversion, low-noise operation, light-load efficiency, low-noise switching,
protection, precision parameter matching, fast current limiting, battery charging and analog functionality with extremely low quiescent currents. Through our acquisition on October 31, 2006 of Analog Power Semiconductor Corporation (AP
Semi), we have expanded our engineering team and established a fully-staffed Shanghai design center to provide local support in key markets in China, Japan and Taiwan. Our marketing, central applications engineering, global sales and field
applications engineering force works with our customers system design, engineering and procurement groups to identify future product needs. Our new product design and development efforts are directed primarily by this product definition
process. Through these efforts, we seek to introduce new products to address new market opportunities, to continue to reduce our design and manufacturing cost and to continue to improve the cost effectiveness, size and performance of our solutions.

The following table includes some of the design innovations that we have developed and on which we compete in our markets:



|                        |  |                                                                                                                                                                                                                                                                        
|----------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Innovation              |  | Benefit                                                                                                                                                                                                                                                                
|                        | 
|S2CwireInterface       |  | Allows our customers to control analog properties in our power management ICs digitally using a single wire. Examples include dimming of LED backlighting, changing the color of an RGB decorative
lighting, or setting on the fly the output voltage of a regulator.
|                        | 
|Fast Current Limiting   |  | Prevents damage from short circuits or an improperly connected charger by rapidly limiting current to a safe level. If the condition persists and the device begins to overheat, it shuts off the
system to protect from overheating.                                  
|                        | 
|Fast Break-Before-Make  |  | Allows switching regulators to operate at higher frequencies without accidentally shorting out the battery. High frequency is important to shrink power supply passive components such as coil and
capacitors.                                                         
|                        | 
|NanoPowerCircuitry     |  | Extends battery life and standby time in mobile consumer electronic devices by using very small currents to operate power management and voltage regulation circuitry.                                                                                                 
|                        | 
|AutoBias               |  | Maximizes efficiency and extends battery life when driving mismatched white LEDs such as color LCD backlighting.                                                                                                                                                       
|                        | 
|Smart Slew-Rate-Control |  | Power-saving switch has slow-turn-on to avoid noise and in-rush current spikes when powering wireless handset RF power amplifiers, CCD camera imagers or large capacitive power loads. One
SmartSwitch may replace up to 14 discrete components.                       

Our most recent engineering effort builds on our past technical successes to explore and reach new
markets with our current design resources. By combining our pre-existing portfolio of products with innovative



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multi-chip packaging, we can develop and offer new power combination products in a shorter timeframe than that it typically takes us to develop a new IC from
inception. We believe that these system-in-a-package combination products benefit our customers with space savings, added features and ease-of-use, while reducing our own technical and market risks. Examples of our newest single-package combination
products include the following:



| |  |  | Lithium-ion battery charger plus high frequency switching regulator plus LDO linear regulator;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | White LED backlight driver and camera flash driver with dual LDO linear regulators;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | White LED backlight driver with camera flash driver;
| | - |  | ----------------------------------------------------



| |  |  | White LED backlight driver with dual LDO linear regulators;
| | - |  | -----------------------------------------------------------



| |  |  | Microprocessor reset with LDO linear regulator;
| | - |  | -----------------------------------------------



| |  |  | High frequency switching regulator with LDO linear regulator;
| | - |  | -------------------------------------------------------------



| |  |  | Dual LDO linear regulators;
| | - |  | ---------------------------



| |  |  | Dual switching regulators; and
| | - |  | ------------------------------



| |  |  | Charger IC with power TrenchDMOS.
| | - |  | ---------------------------------

We support our research and development efforts for new products and improvements to our existing products with our technology development group, which is focused on creating, developing, characterizing and releasing into production new
wafer fabrication processes. We define and create processes, such as ModularBCD, that offer features, performance, devices, characteristics and capabilities not available through conventional foundry processes. We license these new processes to our
suppliers foundries for limited use. We also install these processes according to available resources and market timing. Our technology group oversees any transfers of our processes into a new facility to ensure that the unit process steps are
adapted properly to the new facilitys specific equipment set.

To date, we have developed two new wafer fabrication processes,
ModularBCD, an advanced analog integrated circuit process, and TrenchDMOS, an advanced discrete power MOSFET process. Neither of these processes is currently used to manufacture a meaningful portion of our products. Late in the fourth quarter of
2005, we began sampling our first ModularBCD products. We believe that ModularBCD will be strategically important to our future competitiveness as a supplier of PowerSOCs. We believe that TrenchDMOS is less strategic to our business than ModularBCD,
but it helps us support a Total Power Management product offering to our customers when a totally integrated solution is not technically feasible or cost effective. Being able to offer both solutions gives us an advantage over our competitors that
do not have this capability. In the second half of 2006, we launched our first products combining integrated circuit control and TrenchDMOS power devices in a single package. To date, we have released a total of 3 products and have sampled an
additional 3 products using this combination. TrenchDMOS is also the first process to be offered as part of our Foundry Direct strategy, where we license manufacturers to use our process for applications outside of our target market at
our partners fab. During the second half of 2006, we engaged with our first licensee.

ModularBCD is our patented IC process
technology designed for integrating fully-isolated power, analog and mixed-signal circuitry of differing operating voltages without the need for expensive epitaxial depositions. It is a flexible, cost-effective process well-suited for precision
analog and PowerSOC implementations. ModularBCD and TrenchDMOS processes were both designed and built for manufacturing using equipment readily available in former DRAM fabs. Both processes use low temperature processing consistent with former DRAM
fabs and large wafer diameters, as well as other process requirements typically only found in former DRAM fabs.

In 2006, 2005 and 2004, we
spent $23.8 million, $19.5 million and $14.3 million, respectively, on research and development efforts. We anticipate that we will continue to invest significant amounts in research and development activities to develop new products and processes.
As a result, we expect research and development expenses to increase in absolute dollars in future periods.



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Intellectual Property

We rely on our patents, trade secret laws, contractual provisions, licenses, copyrights, trademarks and other proprietary rights to protect our intellectual property. We have approximately 50 patents issued or allowed
in the United States or foreign countries and a larger number of pending applications. We cannot guarantee that our pending patent applications will be approved, that any issued patents will protect our intellectual property or will not be
challenged by third parties, or that the patents of others will not have an adverse effect on our ability to do business. We focus our patent efforts in the United States, and, when justified by cost and strategic importance, we file corresponding
foreign patent applications in such jurisdictions as Europe, South Korea, China, Taiwan and Japan. Our patent strategy is designed to provide a balance between the need for coverage in our strategic markets and the need to maintain costs at a
reasonable level.

Unauthorized parties may attempt to copy aspects of our products or obtain and use information that we consider
proprietary. Competitors may also recruit our employees who have access to our proprietary technologies. We cannot assure that the measures we have implemented to prevent misappropriation or infringement of our intellectual property will be
successful.

Competition

The analog,
mixed-signal and power management semiconductor industry is highly competitive and dynamic, and we expect it to remain so. Our ability to compete effectively depends on defining, designing and regularly introducing new products that meet or
anticipate the power management needs of our customers next-generation products and applications. We compete with numerous domestic and international semiconductor companies, many of which have greater financial and other resources with which
to pursue marketing, technology development, product design, manufacturing, quality, sales and distribution of their products.

To our
knowledge, no single competitor sells a product line matching one-to-one with our product portfolio and applications focus. We consider our primary competitors to be Maxim Integrated Products, Linear Technology, National Semiconductor, Semtech and
Texas Instruments. We expect continued competition from existing suppliers as well as from new entrants into the power management semiconductor market. Our ability to compete depends on a number of factors, including:



| |  |  | our success in identifying new and emerging markets, applications and technologies, and developing power management solutions for these markets;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our products performance and cost effectiveness relative to that of our competitors products;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | our ability to deliver products in large volume on a timely basis at a competitive price;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | our success in utilizing new and proprietary technologies to offer products and features previously not available in the marketplace;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to recruit and retain engineering staff; and
| | - |  | --------------------------------------------------------



| |  |  | our ability to protect our intellectual property.
| | - |  | -------------------------------------------------

We cannot assure that our products will continue to compete favorably or that we will be successful in the face of increasing competition from new products and enhancements introduced by existing competitors or new
companies entering this market.

Employees

As of December 31, 2006, we had 252 employees located in the United States, China, Europe, Japan, South Korea, Taiwan and Macau. Of this total, there were 85 employees in engineering, research and development, 70 in sales and marketing
and 97 in operations, general and administration, quality assurance, information technology and facilities. We consider our employee relations to be good.



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Executive Officers

The following table sets forth certain information about our executive officers and directors:



|                    |  |     |  |                                                                           
|------------------- |  | --- |  | --------------------------------------------------------------------------
|Name                |  | Age |  | Position                                                                  
|Richard K. Williams |  | 48  |  | President, Chief Executive Officer, Chief Technical Officer and Director  
|                    |  |    
|Parviz Ghaffaripour |  | 43  |  | Executive Vice President and Chief Operating Officer                      
|                    |  |    
|Brian R. McDonald   |  | 50  |  | Chief Financial Officer, Vice President of Worldwide Finance and Secretary
|                    |  |    
|Dr. Jun-Wei Chen    |  | 56  |  | Vice President of Technology                                              
|                    |  |    
|Kevin P. DAngelo   |  | 47  |  | Vice President of Design                                                  
|                    |  |    
|Allen K. Lam        |  | 43  |  | Vice President of Worldwide Operations                                    

Richard K. Williams, one of our founders, has served as our President and Chief Executive
Officer since April 2000 and also as our Chief Technical Officer and a director since September 1998. From September 1998 to April 2000, Mr. Williams previously served as our Vice President of Engineering and Product Strategy. Prior to joining
us, Mr. Williams served at Siliconix incorporated from September 1980 to September 1998, most recently as Senior Director of Device Concept & Design. Mr. Williams holds more than 200 U.S. patents in device, process, package,
circuit, system and application methods and apparatus, and has written over 100 published articles and invited papers. Mr. Williams is a member of the Institute of Electrical and Electronic Engineers. Mr. Williams received an M.S. in
Electrical Engineering from Santa Clara University and a B.S., with honors, in Electrical Engineering (specializing in semiconductor device physics and fabrication) from the University of Illinois at Urbana-Champaign.

Parviz Ghaffaripour has served as our Executive Vice President and Chief Operating Officer since February 2007. Prior to this appointment,
Mr. Ghaffaripour served as the Chief Executive Officer and founder of Aspired Integrated Circuits, a private analog semiconductor company, from June 2006 to February 2007. Prior to that, Mr. Ghaffaripour was with Maxim Integrated Products,
Inc., a publicly traded semiconductor company, from March 1999 to April 2006, most recently as a Vice President responsible for the System Sensing and Interconnect Products Business Unit. Mr. Ghaffaripour previously was with National
Semiconductor Corporation, a publicly traded semiconductor company, from 1990 to 1999 where he held various technical and management positions, most recently as the Product Line Director for the Audio Business Unit. Mr. Ghaffaripour received
executive degrees in Business Administration from Stanford University and the University of Western Ontario, a M.S. in Electrical Engineering from Santa Clara University and a B.S. in Electrical Engineering from the University of California,
Berkeley.

Brian R. McDonald has served as our Chief Financial Officer and Vice President of Worldwide Finance since June 2004 and
as our Secretary since August 2004. Mr. McDonald is responsible for accounting, finance, compliance, information technology and human resource functions. Prior to joining us, Mr. McDonald served as Vice President and Chief Financial
Officer at Monolithic Power Systems, Inc. from August 2002 to June 2004, as Vice President and Chief Financial Officer at Elantec Semiconductor, Inc. from January 2001 to August 2002 and as Vice President and Chief Financial Officer at Mattson
Technology, Inc. from April 1999 to December 2000. Prior to that, Mr. McDonald held senior financial management positions at National Semiconductor Corporation, Read-Rite Corporation and Micro Linear Corporation. Mr. McDonald received a
B.S. in Management from Santa Clara University.

Jun-Wei Chen has served as our Vice President of Technology since February 2005.
Dr. Chen is responsible for device concept and design, process development and integration, CAE development and global Foundry Direct technical support. Prior to joining us, Dr. Chen served as Vice President of Technology at SmartASIC
Technology, Inc. from May 2004 to February 2005, as Chief Technology Officer at CLL Technology, Inc. from May 2000 to May 2004, as Assistant Vice President of Operations for Trident Microsystems, Inc. from July 1998 to May 2000 and as Vice President
of Foundry and Product Engineering at OPTi Inc. from December 1995 to



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June 1998. Dr. Chen holds 20 U.S. patents and has written over 30 technical articles. He is also a member of the Institute for Electrical and Electronic
Engineers. Dr. Chen received a Ph.D. and an M.S. in Electrical Engineering from Carnegie Mellon University and a B.S. in Electrical Engineering from National Taiwan University, Taipei.

Kevin P. DAngelo, one of our founders, has served as our Vice President of Engineering since January 2001. Mr. DAngelo is
responsible for IC design in the United States. Mr. DAngelo previously served as our Senior Director from June 2000 to January 2001 and as our Senior Manager from January 1999 to June 2000. Prior to joining us, Mr. DAngelo
served as Senior Staff Engineer at Impala Linear Corporation from March 1997 to January 1999. From December 1993 to March 1997, he served as Senior Staff Engineer at Siliconix-TEMIC. Prior to that, he served as IC Design Manager at Dallas
Semiconductor Corporation from October 1990 to December 1993, as Senior Engineer in the digital signal processing group at Motorola, Inc. from August 1986 to October 1990 and as Design Engineer at M/A-Com Linkabit from June 1983 to August 1986.
Mr. DAngelo received the 2002 Marconi award for excellence in science and technology, and he holds eight U.S. patents. Mr. DAngelo received a B.S. in Electrical Engineering from the University of California, San Diego.

Allen K. Lam, one of our founders, has served as our Vice President of Worldwide Operations since May 2002. Mr. Lam is
responsible for global manufacturing logistics and planning, purchasing, foundry management, packaging and test engineering, process quality and supporting ongoing quality and environmental initiatives. Mr. Lam previously served as our Director
of Operations and Quality and Reliability Assurance from June 1999 to April 2002 and as our Manager of Quality and Reliability Assurance from November 1998 to May 1999. Mr. Lam is fluent in English, Mandarin and Cantonese and manages our
operations in Taiwan, China, Macau and Hong Kong. Prior to joining us, Mr. Lam served as Quality Manager at Siliconix-Temic from August 1985 to October 1998. Mr. Lam holds seven U.S. patents. Mr. Lam received a Higher Diploma in
Applied Science from the Hong Kong Polytechnic University.

Corporate Information

We were incorporated in California in August 1997 and reincorporated in Delaware in April 2005. Our principal executive offices are located at 830 East
Arques Avenue, Sunnyvale, California 94085, and our telephone number is (408) 737-4600. Our web site address is www.analogictech.com. Unless the context requires otherwise, references in this Form 10-K to AnalogicTech,
we, us and our refer to Advanced Analogic Technologies Incorporated and its wholly-owned subsidiaries on a consolidated basis. Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on
Form 8-K, amendments to those reports and other SEC filings are available free of charge through our website as soon as reasonably practicable after such reports are electronically filed with, or furnished to, the SEC.

AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. This annual report on Form 10-K also includes other
trademarks of Advanced Analogic Technologies Incorporated and trademarks of other persons.

ITEM 1A. RISK FACTORS

Risks Related To Our Business

Our customers may cancel their orders, change production quantities or delay production, and if we fail to forecast demand for our products
accurately, we may incur product shortages, delays in product shipments or excess or insufficient product inventory.

We generally
do not obtain firm, long-term purchase commitments from our customers. Because production lead times often exceed the amount of time required to fulfill orders, we often must build in advance of orders, relying on an imperfect demand forecast to
project volumes and product mix. Our demand forecast accuracy can be adversely affected by a number of factors, including inaccurate forecasting by our customers, changes in market conditions, new part introductions by our competitors that lead to
our loss of previous design wins,



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adverse changes in our product order mix and demand for our customers products or models. China, in particular, is an emerging market where forecasting
by our distributors is not accurate, and there can be rapid changes in the distribution system and market conditions. Even after an order is received, our customers may cancel these orders or request a decrease in production quantities. Any such
cancellation or decrease subjects us to a number of risks, most notably that our projected sales will not materialize on schedule or at all, leading to unanticipated revenue shortfalls and excess or obsolete inventory which we may be unable to sell
to other customers. Alternatively, if we are unable to project customer requirements accurately, we may not build enough products, which could lead to delays in product shipments and lost sales opportunities in the near term, as well as force our
customers to identify alternative sources, which could affect our ongoing relationships with these customers. We have in the past had customers dramatically increase their requested production quantities with little or no advance notice and after
they had submitted their original order. We have on occasion been unable to fulfill these revised orders within the time period requested. Either underestimating or overestimating demand would lead to excess, obsolete or insufficient inventory,
which could harm our operating results, cash flow and financial condition, as well as our relationships with our customers. For example, we recorded inventory write-downs of $3.3 million, $3.3 million, and $1.9 million in the fiscal years ended
2006, 2005 and 2004, respectively.

We receive a substantial portion of our revenues from a small number of customers, and the loss
of, or a significant reduction in, orders from those customers or our other largest customers would adversely affect our operations and financial condition.

We receive a substantial portion of our revenues from two of our customers, LG Electronics Inc. of South Korea and Samsung of South Korea. We received an aggregate of approximately 28% of our revenues from LG for
fiscal year 2006 and 37% of our revenues from LG in fiscal year 2005. We anticipate that we will continue to be dependent on LG for a significant portion of our revenues in the immediate future; however, we do not have long-term contractual purchase
commitments from LG, and we cannot assure you that LG will continue to be our customer. Our combined sales to Samsung and its contract manufactures represented approximately 20% of our revenues for the year ended December 31, 2006, which
included direct sales to Samsung totaling 11% for the year ended December 31, 2006. We do not have long-term contractual purchase commitments from Samsung, and we cannot assure you that Samsung will continue to be our customer.

We received an aggregate of approximately 80% of our revenues from our ten largest customers for 2006. Any action by LG or any of our other largest
customers that affects our orders, product pricing or vendor status could significantly reduce our revenues and harm our financial results. For example, in the fourth quarter of 2004, we experienced a 33% sequential quarterly decline in revenues
from LG as a result of LGs prior increase in inventory of our products in the third quarter in anticipation of the peak fourth-quarter buying season for the wireless handsets in which our products are primarily used by LG. In the future, our
sales to LG or our other large customers will continue to be susceptible to this type of quarterly fluctuation as our customers manage their inventories, principally for seasonal variations. In particular, our customers increase in inventory
of our products in advance of this peak buying season for wireless handsets often leads to sequentially lower sales of our products in the first calendar quarter and, potentially, late in the fourth calendar quarter. In addition, while in the past
the principal LG divisions that purchase our products have been separately responsible for purchasing, inventory and other supply chain logistics, these functions of these divisions underwent a consolidation in 2005. This consolidation has reduced
our ability to forecast orders from LG because we no longer receive orders directly from the LG divisions using our products. In addition, we are required to supply inventory to a centralized location based on a forecast provided by LG for the
ensuing 30 days on a consolidated basis, which requires us to incur the cost of producing materials in advance of receiving a purchase commitment from LG. If LG does not purchase the inventory that was forecasted, we will be required to find
alternative customers for the inventory and we may be unsuccessful in doing so at acceptable prices or at all, which would require us to write down or write off the inventory supplied by us to LGs centralized location. LG implemented this
consolidation and hub structure in 2005. We therefore have limited experience in understanding and forecasting LGs ordering patterns under this structure. Because our largest customers account for such a significant part of our business, the
loss of, or a decline in sales to, any of our major customers would negatively impact our business.



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Our operating results have fluctuated in the past and we expect our operating results to continue
to fluctuate.

Our revenues are difficult to predict and have varied significantly in the past from period to period. We expect our
revenues and expense levels to continue to vary in the future, making it difficult to predict our future operating results. In particular, we experience seasonality and variability in demand for our products as our customers manage their
inventories. Our customers tend to increase inventory of our products in anticipation of the peak fourth quarter buying season for the mobile consumer electronic devices in which our products are used, which often leads to sequentially lower sales
of our products in the first calendar quarter and, potentially, late in the fourth calendar quarter.

Additional factors that could cause
our results to fluctuate include:



| |  |  | the forecasting, scheduling, rescheduling or cancellation of orders by our customers, particularly in China and other emerging markets;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------



| |  |  | costs associated with litigation, especially related to intellectual property;
| | - |  | ------------------------------------------------------------------------------



| |  |  | liquidity and cash flow of our distributors and end-market customers;
| | - |  | ---------------------------------------------------------------------



| |  |  | changes in manufacturing costs, including wafer, test and assembly costs, and manufacturing yields, product quality and reliability;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the timing and availability of adequate manufacturing capacity from our manufacturing suppliers;
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | our ability to successfully define, design and release new products in a timely manner that meet our customers needs;
| | - |  | ----------------------------------------------------------------------------------------------------------------------



| |  |  | the timing, performance and pricing of new product introductions by us and by our competitors;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | general economic conditions in the countries where we operate or our products are used;
| | - |  | ---------------------------------------------------------------------------------------



| |  |  | changes in exchange rates, interest rates, tax rates and tax withholding;
| | - |  | -------------------------------------------------------------------------



| |  |  | geopolitical stability, especially affecting China, Taiwan and Asia in general; and
| | - |  | -----------------------------------------------------------------------------------



| |  |  | changes in domestic and international tax laws.
| | - |  | -----------------------------------------------

Unfavorable changes in any of the above factors, most of which are beyond our control, could significantly harm our business and results of operations.

We may be unsuccessful in developing and selling new products or in penetrating new markets.

We operate in a dynamic environment characterized by rapidly changing technologies and industry standards and technological obsolescence. Our
competitiveness and future success depends on our ability to design, develop, manufacture, assemble, test, market and support new products and enhancements on a timely and cost-effective basis. A fundamental shift in technologies in any of our
product markets could harm our competitive position within these markets. Our failure to anticipate these shifts, to develop new technologies or to react to changes in existing technologies could materially delay our development of new products,
which could result in product obsolescence, decreased revenues and a loss of design wins to our competitors. The success of a new product depends on accurate forecasts of long-term market demand and future technological developments, as well as on a
variety of specific implementation factors, including:



| |  |  | effective marketing, sales and service;
| | - |  | ---------------------------------------



| |  |  | timely and efficient completion of process design and device structure improvements and implementation of manufacturing, assembly and test processes; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the quality, performance and reliability of the product.
| | - |  | --------------------------------------------------------



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If we fail to introduce new products or penetrate new markets, our revenues will likely decrease over
time and our financial condition could suffer.

Due to defects and failures that may occur, our products may not meet specifications,
which may cause customers to return or stop buying our products and may expose us to product liability claims.

Our customers
generally establish demanding specifications for quality, performance and reliability that our products must meet. Integrated circuits, or ICs, as complex as ours often encounter development delays and may contain undetected defects or failures when
first introduced or after commencement of commercial shipments, which might require product replacement or recall. For example, in 2003 one of our low-dropout linear regulator products that we had been shipping for two years developed unacceptably
high failure rates, which caused us to direct our engineering personnel from other priorities to redesign the product. If defects and failures occur in our products during the design phase or after, we could experience lost revenues, increased
costs, including warranty expense and costs associated with customer support, delays in or cancellations or rescheduling of orders or shipments, or product returns or discounts, any of which would harm our operating results. We cannot assure you
that we will have sufficient resources, including any available insurance, to satisfy any asserted claims.

The nature of the design
process requires us to incur expenses prior to earning revenues associated with those expenses, and we will have difficulty selling our products if system designers do not design our products into their electronic systems.

We devote significant time and resources in working with our customers system designers to understand their future needs and to provide products
that we believe will meet those needs. If a customers system designer initially chooses a competitors product for a particular electronic system, it becomes significantly more difficult for us to sell our products for use in that
electronic system because changing suppliers can involve significant cost, time, effort and risk for our customers.

We often incur
significant expenditures in the development of a new product without any assurance that our customers system designers will select our product for use in their electronic systems. We often are required to anticipate which product designs will
generate demand in advance of our customers expressly indicating a need for that particular design. In some cases, there is minimal or no demand for our products in our anticipated target applications. For example, in 2000, we created a USB hub
protection device that we believed would be used in flat panel monitors; however, our customers products have not evolved as we expected, and consequently we have not generated significant customer demand for this product to date. Even if our
products are selected by our customers system designers, a substantial period of time will elapse before we generate revenues related to the significant expenses we have incurred. The reasons for this delay generally include the following
elements of our product sales and development cycle timeline and related influences:



| |  |  | our customers usually require a comprehensive technical evaluation of our products before they incorporate them into their electronic systems;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | it can take up to 12 months from the time our products are selected to complete the design process;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | it can take an additional nine to 12 months or longer to complete commercial introduction of the electronic systems that use our products, if they are introduced at
all;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | original equipment manufacturers typically limit the initial release of their electronic systems to evaluate performance and consumer demand; and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The development and commercial introduction of products incorporating new technology are frequently delayed.
| | - |  | ------------------------------------------------------------------------------------------------------------

We estimate that the overall sales and development cycle timeline of an average product is approximately 16 months.



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Additionally, even if system designers use our products in their electronic systems, we cannot assure you
that these systems will be commercially successful. As a result, we are unable to accurately forecast the volume and timing of our orders and revenues associated with any new product introductions.

Any increase in the manufacturing cost of our products could reduce our gross margins and operating profit.

The semiconductor business exhibits ongoing competitive pricing pressure from customers and competitors. Accordingly, any increase in the cost of our
products, whether by adverse purchase price variances or adverse manufacturing cost variances, will reduce our gross margins and operating profit. For example, if we do not incorporate the partially fabricated wafers held for us by our suppliers
into our products in a timely fashion, we may still become obligated to purchase these materials, which may reduce our gross margins. We do not have many long-term supply agreements with our manufacturing suppliers and, consequently, we may not be
able to obtain price reductions or anticipate or prevent future price increases from our suppliers.

The average selling price of our
products may decline, or a change in the mix of product orders may occur, either of which could reduce our gross margins.

During a
power management products life, its selling price tends to decrease for a particular application. As a result, to maintain gross margins on our products, we must continue to identify new applications for our products, reduce manufacturing
costs for our existing products and introduce new products. If we are unable to identify new, high gross margin applications for our existing products, reduce our production costs or sell new, high gross margin products, our gross margins will
suffer. A sustained reduction in our gross margins could harm our future operating results, cash flow and financial condition, which could lead to a significant drop in the price of our common stock.

Because we receive a substantial portion of our revenues through distributors, their financial viability and ability to access the capital markets
could impact our ability to continue to do business with them and could result in lower revenues, which could adversely affect our operating results and our customer relationships.

We obtain a portion of our revenues through sales to distributors located outside of North America who act as our fulfillment representatives. Sales to
distributors accounted for 39% and 42% of our revenues for the fiscal years 2006 and 2005, respectively. In the normal course of their operation as fulfillment representatives, these distributors typically perform functions such as order scheduling,
shipment coordination, inventory stocking, payment and collections and, when applicable, currency exchange between purchasers of our products and these distributors. Our distributors compensation for these functions is reflected in the price
of the products we sell to these distributors. Many of our current distributors also serve as our sales representatives procuring orders for us to fill directly. If these distributors are unable to pay us in a timely manner or if we anticipate that
they will not pay us, we may elect to withhold future shipments, which could adversely affect our operating results. For example, during the fourth quarter of 2004, a number of our distributors in China delayed payments to us, generally due to an
unanticipated regional increase in restrictions on credit. As a result of these liquidity concerns, we limited our sales to these distributors, which adversely affected our revenues and operating results in the fourth quarter of 2004. If one of our
distributors experiences severe financial difficulties, becomes insolvent or declares bankruptcy, we could lose product inventory held by that distributor and we could be required to write off the value of any receivables owed to us by that
distributor. We could also be required to record bad debt expense in excess of our reserves. For example, in the first quarter of 2005, we noticed a slowing in the payment pattern of our largest distributor, EPCO Technology Co., Ltd.
(EPCO), and it became apparent that EPCO had serious financial problems. As a result, we recorded a bad debt expense of $0.1 million in the fourth quarter of 2004. We have since ceased doing business with EPCO, from which we received
approximately 7% of our revenues in 2004, and have engaged replacement distributors. In the future, we may not be successful in recognizing these indications or in finding replacement distributors in a timely manner, or at all, which could harm our
operating results, cash flow and financial condition.



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Our distributor arrangements often require us to accept product returns and to provide price
protection and if we fail to properly estimate our product returns and price protection reserves, this may adversely impact our reported financial information

A substantial portion of our sales are made through third-party distribution arrangements, which include stock rotation rights that generally permit the return of up to 5% of the previous six months purchases.
We generally accept these returns in the second and fourth quarter of each annual period. Our arrangements with our distributors typically also include price protection provisions if we reduce our list prices. We record estimated returns at the time
of shipment, and we record reserves for price protection at the time we decide to reduce our list prices. In the future, we could receive returns or claims that are in excess of our estimates and reserves, which could harm our operating results.

Our distributor arrangements often require us to accept returns of unsold products if contractual arrangements with a distributor
are terminated, which could harm our operating results or, if we fail to take steps, could harm our relationship with these distributors and lead to a loss of revenues

If our relationship with any of our distributors deteriorates or terminates, it could lead to a temporary or permanent loss of revenues until a
replacement sales channel can be established to service the affected end-user customers, as well as inventory write-offs or accounts receivable write-offs. We may not be successful in finding suitable alternative distributors and this could
adversely affect our ability to sell in certain locations or to certain end-user customers. We also may be obligated to repurchase unsold products from a distributor if we decide to terminate our relationship with that distributor.

We have a limited operating history, and we may have difficulty accurately predicting our future revenues for the purpose of appropriately
budgeting and adjusting our expenses.

We were incorporated in 1997, commenced operations in 1998 and generated only nominal
revenues prior to 2001. We did not become profitable until 2003 and had a net loss in 2006. We therefore have only a short history from which to predict future revenues and an even shorter history of managing profitability. Our limited operating
experience, a dynamic and rapidly evolving market in which we sell our products, our dependence on a limited number of customers, as well as numerous other factors beyond our control, impede our ability to forecast quarterly and annual revenues
accurately. As a result, we could experience budgeting and cash flow management problems, unexpected fluctuations in our results of operations and other difficulties, any of which could make it difficult for us to maintain profitability and could
increase the volatility of the market price of our common stock.

Our current backlog may not be indicative of future sales.

Due to the nature of our business, in which order lead times may vary, and the fact that customers are generally allowed to
reschedule or cancel orders on short notice, we believe that our backlog is not necessarily a good indicator of our future sales. Our quarterly revenues also depend on orders booked and shipped in that quarter. Because our lead times for the
manufacturing of our products generally take six to ten weeks, we often must build in advance of orders. This exposes us to certain risks, most notably the possibility that expected sales will not occur, which may lead to excess inventory, and we
may not be able to sell this inventory to other customers. In addition, we supply LG, our largest customer, through its central hub and we do not record backlog with respect to the products we ship to the hub. Therefore, our backlog may not be a
reliable indicator of future sales.

If consumer demand for mobile consumer electronic devices declines, our revenues will decrease.

Our products are used primarily in the mobile consumer electronic devices market. For the foreseeable future, we expect to see the
significant majority of our revenues continue to come from this market, especially in



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wireless handsets. If consumer demand for these products declines, our revenues will decrease. If we are unsuccessful in identifying alternative markets for
our products in a timely manner, our operating results will suffer dramatically.

Substantially all of our customers and operations
are located in Asia, which subjects us to additional risks, including regional economic influences, logistical complexity, political instability and currency fluctuations.

We conduct, and expect to continue to conduct, almost all of our business with companies that are located outside the United States. Based on ship-to
locations, we derived approximately 98%, 99% and 99% of our revenues from customers outside of the United States in fiscal years 2006, 2005 and 2004, respectively. Approximately 94%, 96%, and 95% of our revenues came from customers in Asia,
particularly South Korea, Taiwan, China and Japan, in fiscal years 2006, 2005 and 2004, respectively. A vast majority of our contract manufacturing operations are located in South Korea, Taiwan, Malaysia and China. In addition, we have a design
center in Shanghai with 50 employees as of December 31, 2006. As a result of our international focus, we face several challenges, including:



| |  |  | increased complexity and costs of managing international operations;
| | - |  | --------------------------------------------------------------------



| |  |  | longer and more difficult collection of receivables;
| | - |  | ----------------------------------------------------



| |  |  | political and economic instability;
| | - |  | -----------------------------------



| |  |  | limited protection of our intellectual property;
| | - |  | ------------------------------------------------



| |  |  | unanticipated changes in local regulations, including tax regulations;
| | - |  | ----------------------------------------------------------------------



| |  |  | timing and availability of import and export licenses; and
| | - |  | ----------------------------------------------------------



| |  |  | foreign currency exchange fluctuations relating to our international operating activities.
| | - |  | ------------------------------------------------------------------------------------------

We are also more susceptible to the regional economic impact of health crises. For example, we believe that our second quarter 2003 results of operations
were significantly harmed by the Severe Acute Respiratory Syndrome, or SARS, epidemic experienced in Asia during that time, which reduced demand for our products by our customers in Asia. Because we anticipate that we will continue to rely heavily
on foreign companies or U.S. companies operating in Asia for our future growth, the above risks and issues that we do not currently anticipate could adversely affect our ability to conduct business and our results of operations.

We outsource our wafer fabrication, testing, packaging, warehousing and shipping operations to third parties, and rely on these parties to produce
and deliver our products according to requested demands in specification, quantity, cost and time.

We rely on third parties for
substantially all of our manufacturing operations, including wafer fabrication, wafer probe, wafer thinning, assembly, final test, warehousing and shipping. We depend on these parties to supply us with material of a requested quantity in a timely
manner that meets our standards for yield, cost and manufacturing quality. Any problems with our manufacturing supply chain could adversely impact our ability to ship our products to our customers on time and in the quantity required, which in turn
could cause an unanticipated decline in our sales and possibly damage our customer relationships.

Our products are manufactured at a
limited number of locations. If we experience manufacturing problems at a particular location, we would be required to transfer manufacturing to a backup supplier. Converting or transferring manufacturing from a primary supplier to a backup
fabrication facility could be expensive and could take as long as six to 12 months. During such a transition, we would be required to meet customer demand from our then-existing inventory, as well as any partially finished goods that can be modified
to the required product specifications. We do not seek to maintain sufficient inventory to address a lengthy transition period because we



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believe it is uneconomical to keep more than minimal inventory on hand. As a result, we may not be able to meet customer needs during such a transition,
which could delay shipments, cause a production delay or stoppage for our customers, result in a decline in our sales and damage our customer relationships.

In addition, a significant portion of our sales is to customers that practice just-in-time order management from their suppliers, which gives us a very limited amount of time in which to process and complete these
orders. As a result, delays in our production or shipping by the parties to whom we outsource these functions could reduce our sales, damage our customer relationships and damage our reputation in the marketplace, any of which could harm our
business, results of operations and financial condition.

The loss of any of our key personnel could seriously harm our business, and
our failure to attract or retain specialized technical and management talent could impair our ability to grow our business.

The
loss of services of one or more of our key personnel could seriously harm our business. In particular, our ability to define and design new products, gain new customers and grow our business depends on the continued contributions of Richard K.
Williams, our President, Chief Executive Officer and Chief Technical Officer, as well as our senior level sales, operations, technology and engineering personnel. Our future growth will also depend significantly on our ability to recruit and retain
qualified and talented managers and engineers, along with key manufacturing, quality, sales and marketing staff members. There remains intense competition for these individuals in our industry, especially those with power and analog semiconductor
design and applications expertise. We cannot assure you we will be successful in finding, hiring and retaining these individuals. If we are unable to recruit and retain such talent, our product and technology development, manufacturing, marketing
and sales efforts could be impaired.

We compete against companies with substantially greater financial and other resources, and our
market share or gross margins may be reduced if we are unable to respond to competitive challenges effectively.

The analog,
mixed-signal, or analog with digital, and power management semiconductor industry in which we operate is highly competitive and dynamic, and we expect it to remain so. Our ability to compete effectively depends on defining, designing and regularly
introducing new products that meet or anticipate the power management needs of our customers next-generation products and applications. We compete with numerous domestic and international semiconductor companies, many of which have greater
financial and other resources with which to pursue marketing, technology development, product design, manufacturing, quality, sales and distribution of their products.

We consider our primary competitors to be Maxim Integrated Products, Inc., Linear Technology Corporation, Texas Instruments Incorporated, Semtech Corporation and National Semiconductor Corporation. We expect continued
competition from existing suppliers as well as from new entrants into the power management semiconductor market. Our ability to compete depends on a number of factors, including:



| |  |  | our success in identifying new and emerging markets, applications and technologies, and developing power management solutions for these markets;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our products performance and cost effectiveness relative to that of our competitors products;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | our ability to deliver products in large volume on a timely basis at a competitive price;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | our success in utilizing new and proprietary technologies to offer products and features previously not available in the marketplace;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our ability to recruit application engineers and designers; and
| | - |  | ---------------------------------------------------------------



| |  |  | our ability to protect our intellectual property.
| | - |  | -------------------------------------------------

We cannot assure you that our products will compete favorably or that we will be successful in the face of increasing competition from new products and enhancements introduced by our existing competitors or new
companies entering this market.



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Assertions by third parties of infringement by us of their intellectual property rights could
result in significant costs, reduce sales of our products and cause our operating results to suffer.

The semiconductor industry is
characterized by vigorous protection and pursuit of intellectual property rights and positions, which has resulted in protracted and expensive litigation for many companies. We have in the past received, and expect that in the future we may receive,
communications from various industry participants alleging our infringement of their patents, trade secrets or other intellectual property rights. Any lawsuits resulting from such allegations could subject us to significant liability for damages and
invalidate our proprietary rights. Any potential intellectual property litigation also could force us to do one or more of the following:



| |  |  | stop selling products or using technology that contain the allegedly infringing intellectual property;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | incur significant legal expenses;
| | - |  | ---------------------------------



| |  |  | pay damages to the party claiming infringement;
| | - |  | -----------------------------------------------



| |  |  | redesign those products that contain the allegedly infringing intellectual property; and
| | - |  | ----------------------------------------------------------------------------------------



| |  |  | attempt to obtain a license to the relevant intellectual property from third parties, which may not be available on reasonable terms or at all.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------

We initiated a lawsuit against Linear Technology Corporation in February 2006 for unfair business practices,
interference with existing and prospective customers and trade libel, as well as a declaration of patent invalidity and non-infringement. In this case, we are seeking to prevent Linear Technology from continuing a marketing campaign designed to
disrupt our business relationships and sales by suggesting to our customers that our products infringe several U.S. patents owned by Linear Technology. As we informed Linear Technology in 2003 and 2004, and as discussed in our prior public filings,
we believe that none of our products infringe the patents in question. However, whether or not we prevail in this lawsuit, we expect to incur significant legal expenses related to this case. If we are unsuccessful in this case, our business and our
ability to compete in foreign markets could be harmed, and we could be enjoined from selling the accused products in the United States, either directly or indirectly, which could have a material adverse impact on our revenues, financial condition,
results of operations and cash flows.

In February 2006, in a related action, Linear Technology petitioned the United States International
Trade Commission (USITC) requesting that the USITC initiate an investigation to determine if certain of our products infringe certain patents owned by Linear Technology under Section 337 of the Tariff Act. The patents involved in
this action are a subset of the patents involved in the lawsuit that we filed against Linear Technology. The accused products include charge pumps and switching regulators and are similar to the products involved in our lawsuit with Linear
Technology. As with any litigated matter, we expect to incur expenses defending this action. If we are unsuccessful in this case, our business and our ability to compete in foreign markets could be harmed, and we could be enjoined from selling the
accused products in the United States, either directly or indirectly, which could have a material adverse impact on our revenues, financial condition, results of operations and cash flows.

Uncertainty over the outcome of our litigation with Linear Technology may cause our customers or potential customers to elect not to include our products
that are the subject of this litigation into the design of their systems. Once a customers system designer initially chooses a competitors product for a particular electronic system, it becomes significantly more difficult for us to sell
our products for use in that electronic system, because changing suppliers can involve significant cost, time, effort and risk for our customers. As a result, our litigation with Linear Technology or any similar future litigation may reduce both our
current and future revenues.



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Our failure to protect our intellectual property rights adequately could impair our ability to
compete effectively or to defend ourselves from litigation, which could harm our business, financial condition and results of operations.

We rely primarily on patent, copyright, trademark and trade secret laws, as well as confidentiality and non-disclosure agreements to protect our proprietary technologies and know-how. While we have approximately 50 patents issued or allowed
in the United States or foreign countries and a larger number of pending applications, the rights granted to us may not be meaningful or provide us with any commercial advantage. For example, these patents could be challenged or circumvented by our
competitors or be declared invalid or unenforceable in judicial or administrative proceedings. The failure of our patents to adequately protect our technology might make it easier for our competitors to offer similar products or technologies. Our
foreign patent protection is generally not as comprehensive as our U.S. patent protection and may not protect our intellectual property in some countries where our products are sold or may be sold in the future. Even if foreign patents are granted,
effective enforcement in foreign countries may not be available. Many U.S.-based companies have encountered substantial intellectual property infringement in foreign countries, including countries where we sell products.

Monitoring unauthorized use of our intellectual property is difficult and costly. It is possible that unauthorized use of our intellectual property may
occur without our knowledge. We cannot assure you that the steps we have taken will prevent unauthorized use of our intellectual property. Our failure to effectively protect our intellectual property could reduce the value of our technology in
licensing arrangements or in cross-licensing negotiations, and could harm our business, results of operations and financial condition. We may in the future need to initiate infringement claims or litigation. Litigation, whether we are a plaintiff or
a defendant, can be expensive, time-consuming and may divert the efforts of our technical staff and managerial personnel, which could harm our business, whether or not such litigation results in a determination favorable to us.

We do not expect to sustain our recent growth rate, and we may not be able to manage any future growth effectively.

We have experienced significant growth in a short period of time. Our revenues have increased from approximately $1.0 million in 2001 to $81.2 million in
2006. We do not expect to achieve similar growth rates in future periods. You should not rely on our operating results for any prior quarterly or annual periods as an indication of our future operating performance. If we are unable to maintain
adequate revenue growth, our financial results could suffer and our stock price could decline.

We have also grown from 110 employees on
January 1, 2004 to 252 employees on December 31, 2006, with many located in regional and international offices. Our international growth may subject us to income and transaction taxes in the United States and in multiple foreign locations.
Our future effective tax rates could be affected by changes in our U.S. and foreign tax estimates and liabilities, or changes in tax laws or the interpretation of such tax laws. If additional taxes are assessed against us, our operating results or
financial condition could be materially affected.

Our expansion has placed a significant strain on our management, personnel, systems and
resources. Any future expansion is likely to result in additional strain on our managerial infrastructure. To manage our growth successfully and handle the responsibilities of being a public company, we believe we must effectively:



| |  |  | recruit, hire, train and manage additional qualified engineers for our research and development activities, especially in the positions of design engineering,
product and test engineering, and applications engineering;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | continue to implement and improve adequate administrative, financial and operational systems, procedures and controls; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------



| |  |  | enhance our information technology support for enterprise resource planning and design engineering by adapting and expanding our systems and tool capabilities, and
properly training new hires as to their use.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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If we are unable to manage our growth effectively, we may not be able to take advantage of market
opportunities or develop new products, our introduction of derivative products may be delayed and we may fail to satisfy customer requirements, maintain product quality, execute our business plan or respond to competitive pressures.

Any acquisitions we make could disrupt our business, result in integration difficulties or fail to realize anticipated benefits, which could
adversely affect our financial condition and operating results.

We may choose to acquire companies, technologies, assets and
personnel that are complementary to our business, including for the purpose of expanding our new product design capacity, introducing new design, market or application skills or enhancing and expanding our existing product lines. On October 31,
2006, we acquired Analog Power Semiconductor Corporation (AP Semi) and related assets and personnel, primarily located in Shanghai, China. Acquisitions involve numerous risks, including the following:



| |  |  | difficulties in integrating the operations, systems, technologies, products and personnel of the acquired companies;
| | - |  | --------------------------------------------------------------------------------------------------------------------



| |  |  | diversion of managements attention from normal daily operations of the business and the challenges of managing larger and more widespread operations resulting
from acquisitions;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | difficulties in entering markets in which we may have no or limited direct prior experience and where competitors may have stronger market positions;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the potential loss of key employees, customers, distributors, suppliers and other business partners of the companies we acquire following and continuing after
announcement of acquisition plans;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | improving and expanding our management information systems to accommodate expanded operations;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | insufficient revenue to offset increased expenses associated with acquisitions; and
| | - |  | -----------------------------------------------------------------------------------



| |  |  | addressing unforeseen liabilities of acquired businesses.
| | - |  | ---------------------------------------------------------

Acquisitions may also cause us to:



| |  |  | issue capital stock that would dilute our current stockholders percentage ownership;
| | - |  | -------------------------------------------------------------------------------------



| |  |  | use a substantial portion of our cash resources or incur debt;
| | - |  | --------------------------------------------------------------



| |  |  | assume liabilities;
| | - |  | -------------------



| |  |  | record goodwill or incur amortization expenses related to certain intangible assets; and
| | - |  | ----------------------------------------------------------------------------------------



| |  |  | incur large and immediate write-offs and other related expenses.
| | - |  | ----------------------------------------------------------------

Any of these factors could prevent us from realizing the anticipated benefits of an acquisition, and our failure to realize these benefits could adversely affect our business. In addition, we may not be successful in
identifying future acquisition opportunities or in consummating any acquisitions that we may pursue on favorable terms, if at all. Any transactions that we complete may impair stockholder value or otherwise adversely affect our business and the
market price of our stock. Failure to manage and successfully integrate acquisitions could materially harm our financial condition and operating results.

The cyclical nature of the semiconductor industry, which has historically demonstrated significant and prolonged downturns, could impact our operating results, financial condition and cash flows.

The semiconductor industry has historically exhibited cyclical behavior which at various times has included significant downturns
in customer demand. These conditions have caused significant variations in product orders and production capacity utilization, as well as price erosion. Because a significant portion of our expenses is fixed in the near term or is incurred in
advance of anticipated sales, we may not be able to decrease our expenses rapidly enough to offset any unanticipated shortfall in revenues. If this situation were to occur, it could adversely affect our operating results, cash flow and financial
condition.



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Our business may be adversely impacted if our end customers cannot obtain sufficient supplies of
other components in their products to meet their production projections and target quantities.

Our power management products are
used by our customers in conjunction with a number of other components such as digital integrated circuits, baseband processors, microcontrollers and digital signal processors. If for any reason our customers incur a shortage of any component, their
ability to produce the forecasted quantity of their end product or model may be adversely affected and our product sales would decline until such shortage is remedied. Such a situation could harm our operating results, cash flow and financial
condition.

We, our manufacturing suppliers and our end customers operate facilities located in regions subject to earthquakes and
other natural disasters.

Our corporate headquarters in Sunnyvale, California, our operations office in Chupei, Taiwan, and the
production facilities of one of our wafer fabrication suppliers and several of our assembly and test suppliers in Hsinchu and across Taiwan are located near seismically active regions and are subject to periodic earthquakes. We do not maintain
earthquake insurance and our business could be damaged in the event of a major earthquake or other natural disaster.

In addition to risks
in our operations from natural disasters, our customers are also subject to these risks. Any disaster impacting our customers could result in loss of orders, delay of business and temporary regional economic recessions. For example, we believe that
our second quarter 2003 results of operations were significantly harmed by the SARS epidemic experienced in Asia during that time, which reduced demand for our products by our customers in Asia. The occurrence of any of these or other disasters
could harm our business, financial condition and results of operations.

A failure of our information systems would adversely impact
our ability to process orders for and manufacture products.

We operate a multinational business enterprise with manufacturing,
administration and sales groups located in Asia, Europe and the United States. These disparate groups are connected by a virtual private network-based enterprise resource planning system, where daily manufacturing operations and order entry
functions rely on maintaining a reliable network among locations. Any failure of our computer network or our enterprise resource planning system would impede our ability to schedule orders, monitor production work in process and ship and bill our
finished goods to our customers.

A failure to maintain our international structure may adversely affect our tax rate, financial
condition and operating results.

During 2005, we realigned certain areas of our operations in connection with the implementation of
an international structure. This realignment required us to transfer certain functions previously handled in our Sunnyvale, California headquarters to offices in foreign jurisdictions, primarily Macau. If we fail to maintain our realigned
operations, our operating results may be adversely affected. Additionally, our international structure results in an increased volume of transactions and accounting for those transactions may require us to increase our headcount either
domestically or internationally. A failure to process those transactions in an accurate and timely manner could be indicative of a material weakness in our internal controls over financial reporting. Our international structure requires that we
understand complex tax laws and regulations in various domestic and international jurisdictions. If we are unable to comply with domestic and international tax laws, our tax rate and our financial condition may be adversely impacted. Further, the
domestic and international tax laws governing our structure are subject to change, which could adversely affect our operations and financial results.



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The requirement that we expense employee stock options has significantly reduced our net income and
will continue to do so in future periods.

In December 2004, the Financial Accounting Standards Board issued Statement of Financial
Accounting Standards No. 123 (Revised 2004), Share-Based Payment, or SFAS 123(R), which requires the measurement of all share-based payments to employees, including grants of employee stock options, using a fair-value-based method
and the recording of such expense in our consolidated statements of operations. The accounting provisions of SFAS 123(R) became effective for our quarter beginning January 1, 2006. The pro forma disclosures previously permitted under SFAS 123
are no longer an alternative to financial statement recognition. As a result of adopting SFAS 123(R), we will now have additional stock compensation expense associated with grants after April 4, 2005, the date of our initial filing of our
registration statement in connection with our initial public offering, based on the grant date fair value. The ultimate amount of future stock compensation expense will depend upon the number of grants, the estimated grant date fair value, which
depends upon significant assumptions including stock volatility and estimated term, the assumed forfeiture rate and the requisite service period for future grants. This expense has had a significant impact on our fiscal year 2006. We have recorded
approximately $6.1 million of stock based compensation expense under SFAS 123(R) for the year ended December 31, 2006 and recorded $2.3 million of stock based compensation expense under APB 25 for the year ended December 31, 2005. We
believe that this will continue to have a significant impact on our future operating results.

We have incurred and will continue to
incur increased costs as a result of being a public company.

As a public company, we have incurred and will continue to incur
significant legal, accounting and other expenses that we did not incur as a private company. In addition, the Sarbanes-Oxley Act of 2002, as well as new rules subsequently implemented by the Securities and Exchange Commission and the Nasdaq Global
Market, have imposed various new requirements on public companies, including requiring changes in corporate governance practices. We expect these rules and regulations to increase our legal and financial compliance costs and to make some activities
more time-consuming and costly. Because we have only recently become a public company and have a limited history with these types of expenses, we may not accurately estimate these expenses in our financial planning. In addition, our current and
future financial results may be more difficult to compare to prior periods when we did not incur these types of expenses.

If we fail
to maintain an effective system of internal controls, we may not be able to accurately report our financial results, our business could be harmed and our stock price could decline.

Effective internal controls are critical for us to provide reliable and accurate financial reports and prevent fraud. We have devoted significant
resources in order to comply with the internal control over financial reporting requirements under the Sarbanes-Oxley Act of 2002. The Company had previously concluded that a material weakness in the Companys internal control over financial
reporting existed as of December 31, 2005, as reported in the Companys Annual Report on Form 10-K for the year ended December 31, 2005. This material weakness related to the controls over the preparation and review of our income tax
provision and related deferred tax accounts reported in 2005 has been remediated. The Company added a qualified and experienced tax manager in the Finance Department to ensure that it has sufficient skills and experience within the department to
prepare its tax provision and tax related disclosures in accordance with GAAP.

Our compliance with the Sarbanes-Oxley Act of 2002 in the
future will depend on the effectiveness of our financial reporting, integrity of the data, and effective controls across our operating subsidiaries. Part of our growth strategy has been, and may continue to be, growth through the acquisition of
complementary businesses. We expect the controls over the mergers and acquisitions and integration processes to be complex and thus increase difficulty and costs in managing and enforcing the controls over the acquired businesses. Any failure to
implement the required controls on the acquired businesses could cause it fail to meet our financial reporting requirements. Inferior internal controls could also cause investors to lose confidence in our reported financial



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information and could have a negative impact on the trading price of our stock. In addition, because the uncertainty of the recent SEC and Public Company
Accounting Oversight Board proposal regarding Section 404, we cannot be certain that the controls we designed, implemented and maintained are effective to meet the new measures.

ITEM 1B. UNRESOLVED STAFF COMMENTS

Not applicable.

ITEM 2. PROPERTIES

Our principal executive offices are located in a leased facility in Sunnyvale,
California, consisting of approximately 27,980 square feet of office space, under a three-year lease that expires in 2007. This facility accommodates our principal engineering, technology, administrative and finance activities.

In connection with our acquisition of AP Semi and related assets, we assumed a lease for a facility comprising 19,256 square feet of office space,
expiring in 2007. This facility in Shanghai, China accommodates our secondary engineering activities. In addition, we assumed a lease for approximately 828 square feet of office space in Tokyo for engineering personnel.

Our manufacturing operations, planning, logistics and package engineering activities are located throughout Asia where we lease approximately 7,030
square feet of office space in Hong Kong under a four-year lease that expired in 2006; approximately 13,837 square feet of office space in Chupei, Taiwan, under a three-year lease that expires in 2007; and approximately 900 square feet of office
space in Macau under a two-year lease that expires in 2007.

Our Asia sales offices occupy additional leased facilities in Taipei, Taiwan;
Tokyo, Japan; Seoul, South Korea; and Shanghai, Beijing and Shenzen, China. In Europe, we have an additional sales office lease in Stockholm, Sweden and London, England.

We do not own any real property. We believe that our leased facilities are adequate to meet our current needs and that additional facilities are available for lease to meet future needs.

ITEM 3. LEGAL PROCEEDINGS

In May 2003, we received a letter from Linear Technology Corporation
alleging that certain of our charge pump products infringed United States Patent No. 6,411,531 owned by Linear Technology. In August 2004, we received a letter from Linear Technology alleging that certain of our switching regulator products
infringed United States Patent Nos. 5,481,178, 6,304,066 and 6,580,258. In response to these letters, we contacted Linear Technology to convey our good faith belief that we do not infringe the patents in question. Subsequently, we became aware of a
marketing campaign conducted by Linear Technology in which they sought to disrupt our business relationships and sales by suggesting to our customers that our products infringe the same U.S. patents mentioned in their two letters to us. As a result,
in February 2006, we initiated a lawsuit against Linear Technology for unfair business practices, interference with existing and prospective customers and trade libel, as well as a declaration of patent invalidity and non-infringement. This case is
currently stayed pending the outcome of the United States International Trade Commission (USITC) investigation described in the following paragraph.

In March 2006, the USITC responded to a petition filed by Linear Technology by initiating an investigation to determine if certain of the our products infringe certain patents owned by Linear Technology pursuant to
Section 337 of the Tariff Act. The patents involved in this action are a subset of the patents involved in the lawsuit that we filed against Linear Technology. The accused products include charge pumps and switching



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regulators and are similar to the products involved in our lawsuit with Linear Technology. We believe that none of our products infringe the Linear
Technology patents in question. However, whether or not we prevail in this investigation, we expect to incur significant legal expenses. If we are unsuccessful in this case, our business and our ability to compete in foreign markets could be harmed,
and we and our customers could be enjoined from importing the accused products into the United States, which could have a material adverse impact on our revenues, financial condition, results of operations and cash flows.

In July 2006, we settled our on-going patent litigation initiated by Siliconix against us concerning several United States Patents owned by Siliconix.
Under the terms of the settlement, we and Siliconix agreed to dismiss all claims and counterclaims in the litigation. Both we and Siliconix will continue marketing our respective trench DMOS product lines. The settlement had no material impact on
our financial statements.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.



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PART II



| | ITEM 5. | MARKET FOR THE REGISTRANTS COMMON EQUITY, RELATED STOCKHOLDERS MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES
| | ------- | ------------------------------------------------------------------------------------------------------------------

The information required by this item regarding equity compensation plans is set forth under the caption Equity Compensation Plan Information
in our 2007 Proxy Statement and is incorporated herein by reference. For additional information on our stock incentive plans and activity, see Note 5 to our Consolidated Financial Statements included in Item 8 of this Report.

Market Price of Our Common Stock

Our common stock
began trading on the Nasdaq Global Market on August 4, 2005 under the symbol AATI. The following table sets forth the quarterly information on the price range of our common stock based on the high and low sale prices for our common
stock as reported by the Nasdaq Global Market for the periods indicated:



|                                    |  |      |       |     |   |      
|----------------------------------- |  | ---- | ----- | --- | - | -----
|                                    |  | High |       | Low
|Year Ended December 31, 2005        |  |      |       |     |   |      
|Third Quarter (from August 4, 2005) |  | $    | 13.90 |     | $ | 10.70
|Fourth Quarter                      |  | $    | 15.48 |     | $ | 9.70 
|                                    |  |     
|Year Ending December 31, 2006       |  |      |       |     |   |      
|First Quarter                       |  | $    | 15.75 |     | $ | 10.60
|Second Quarter                      |  | $    | 12.73 |     | $ | 9.51 
|Third Quarter                       |  | $    | 10.48 |     | $ | 5.05 
|Fourth Quarter                      |  | $    | 6.50  |     | $ | 4.90 

As of February 28, 2007, there were approximately 153 record holders of our common stock.

Dividend Policy

We have never
declared or paid any cash dividends on our capital stock and we do not currently intend to pay any cash dividends on our common stock. We expect to retain future earnings, if any, to fund the development and growth of our business. Any future
determination to pay dividends on our common stock will be, subject to applicable law, at the discretion of our board of directors and will depend upon, among other factors, our results of operations, financial condition, capital requirements and
contractual restrictions.

Unregistered Sales of Equity Securities and Use of Proceeds

None.



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|ITEM 6. | SELECTED FINANCIAL DATA
|------- | -----------------------

The following table sets
forth our selected consolidated financial data for the years ended December 31, 2006, 2005, 2004, 2003 and 2002. You should read the following table in conjunction with the consolidated financials statements and related notes contained
elsewhere in the report on Form 10-K. Operating results for any year are not necessarily indicative of results for any future periods.



|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|----------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------- | ------- | - | ---- | - | ------- | ---- |  | - | ------ | - |  | ---- | ------ | - |  | - | ------ | -
|                                                                                                                                                            |  | Years Ended December 31,              |        
|                                                                                                                                                            |  | 2006                                  |         |   | 2005 |   |         | 2004 |  |   | 2003   |   |  | 2002 |       
|                                                                                                                                                            |  | (in thousands, except per share data) |        
|Consolidated Statement of Operations Data                                                                                                                   |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|NET SALES                                                                                                                                                   |  | $                                     | 81,161  |   |      | $ | 68,298  |      |  | $ | 51,345 |   |  | $    | 26,478 |   |  | $ | 9,681  |  
|Cost of revenues (including stock-based compensation of $268, $112, $42, $0 and $0 in 2006, 2005, 2004, 2003 and 2002,
respectively)                        |  |                                       | 34,556  |   |      |   | 26,964  |      |  |   | 19,115 |   |  |      | 12,781 |   |  |   | 6,842  |  
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|GROSS PROFIT                                                                                                                                                |  |                                       | 46,605  |   |      |   | 41,334  |      |  |   | 32,230 |   |  |      | 13,697 |   |  |   | 2,839  |  
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|OPERATING EXPENSES:                                                                                                                                         |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|Research and development (including stock-based compensation of $2,403, $784, $300, $0 and $0 in 2006, 2005, 2004, 2003 and 2002,
respectively)             |  |                                       | 23,772  |   |      |   | 19,479  |      |  |   | 14,306 |   |  |      | 7,104  |   |  |   | 5,440  |  
|Sales, general and administrative (including stock-based compensation of $3,472, $1,493, $576, $0 and $27 in 2006, 2005, 2004, 2003 and 2002,
respectively) |  |                                       | 22,272  |   |      |   | 17,624  |      |  |   | 10,768 |   |  |      | 5,469  |   |  |   | 3,443  |  
|Patent litigation                                                                                                                                           |  |                                       | 8,536   |   |      |   | 27      |      |  |   | 473    |   |  |      | 22     |   |  |   |       |  
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|Total operating expenses                                                                                                                                    |  |                                       | 54,580  |   |      |   | 37,130  |      |  |   | 25,547 |   |  |      | 12,595 |   |  |   | 8,883  |  
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|INCOME (LOSS) FROM OPERATIONS                                                                                                                               |  |                                       | (7,975  | ) |      |   | 4,204   |      |  |   | 6,683  |   |  |      | 1,102  |   |  |   | (6,044 | )
|INTEREST AND INVESTMENT INCOME (EXPENSES):                                                                                                                  |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|Interest and investment income                                                                                                                              |  |                                       | 5,823   |   |      |   | 2,058   |      |  |   | 157    |   |  |      | 24     |   |  |   | 52     |  
|Interest and other expense                                                                                                                                  |  |                                       | (72     | ) |      |   | (121    | )    |  |   | (43    | ) |  |      | (203   | ) |  |   | (43    | )
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|Total interest and investment income (expense), net                                                                                                         |  |                                       | 5,751   |   |      |   | 1,937   |      |  |   | 114    |   |  |      | (179   | ) |  |   | 9      |  
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|INCOME (LOSS) BEFORE INCOME TAXES                                                                                                                           |  |                                       | (2,224  | ) |      |   | 6,141   |      |  |   | 6,797  |   |  |      | 923    |   |  |   | (6,035 | )
|PROVISION (BENEFIT) FOR INCOME TAXES                                                                                                                        |  |                                       | (142    | ) |      |   | 4,056   |      |  |   | (8,381 | ) |  |      | 50     |   |  |   | 36     |  
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|NET INCOME (LOSS)                                                                                                                                           |  | $                                     | (2,082  | ) |      | $ | 2,085   |      |  | $ | 15,178 |   |  | $    | 873    |   |  | $ | (6,071 | )
|                                                                                                                                                            |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|NET INCOME (LOSS) PER SHARE:                                                                                                                                |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|Basic                                                                                                                                                       |  | $                                     | (0.05   | ) |      | $ | 0.10    |      |  | $ | 3.43   |   |  | $    | 0.35   |   |  | $ | (2.63  | )
|Diluted                                                                                                                                                     |  | $                                     | (0.05   | ) |      | $ | 0.05    |      |  | $ | 0.46   |   |  | $    | 0.04   |   |  | $ | (2.63  | )
|WEIGHTED AVERAGE SHARES USED IN NET INCOME (LOSS) PER SHARE CALCULATION:                                                                                    |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|Basic                                                                                                                                                       |  |                                       | 43,477  |   |      |   | 21,025  |      |  |   | 4,420  |   |  |      | 2,505  |   |  |   | 2,309  |  
|Diluted                                                                                                                                                     |  |                                       | 43,477  |   |      |   | 40,147  |      |  |   | 33,214 |   |  |      | 22,248 |   |  |   | 2,309  |  
|Cash dividend declared per common share                                                                                                                     |  |                                       |        |   |      |   |        |      |  |   |       |   |  |      |       |   |  |   |       |  
|                                                                                                                                                            | 
|                                                                                                                                                            |  | Years Ended December 31,              |        
|                                                                                                                                                            |  | 2006                                  |         |   | 2005 |   |         | 2004 |  |   | 2003   |   |  | 2002 |       
|                                                                                                                                                            |  | (in thousands)                        |        
|Consolidated Balance Sheet Data                                                                                                                             |  |                                       |         |   |      |   |         |      |  |   |        |   |  |      |        |   |  |   |        |  
|Cash and cash equivalents                                                                                                                                   |  | $                                     | 58,121  |   |      | $ | 124,377 |      |  | $ | 21,705 |   |  | $    | 14,262 |   |  | $ | 1,912  |  
|Working capital                                                                                                                                             |  |                                       | 115,914 |   |      |   | 135,973 |      |  |   | 34,792 |   |  |      | 18,269 |   |  |   | 1,652  |  
|Total assets                                                                                                                                                |  |                                       | 161,198 |   |      |   | 151,323 |      |  |   | 44,989 |   |  |      | 24,458 |   |  |   | 7,962  |  
|Total stockholders equity                                                                                                                                  |  |                                       | 145,937 |   |      |   | 140,402 |      |  |   | 38,953 |   |  |      | 19,690 |   |  |   | 3,097  |  



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|ITEM 7. | MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
|------- | -------------------------------------------------------------------------------------

The following discussion should be read in conjunction with the consolidated financial statements and related notes which appear elsewhere in this
report on Form 10-K. This discussion contains forward-looking statements that involve risks and uncertainties. Please see Forward-Looking Statements above. Our actual results could differ materially from those anticipated in these
forward-looking statements as a result of various factors, including those discussed below and elsewhere in this report on Form 10-K, particularly under the heading Trends, Risks and Uncertainties.

Overview

We are a supplier of power management
semiconductors for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras and personal media players. We focus our design and marketing efforts on the application-specific power
management needs of consumer, communications and computing applications in these rapidly-evolving devices. We currently offer a portfolio of over 530 power management products comprising Power Management application-specific standard products, or
ASSPs, and selected general-purpose analog integrated circuits, or ICs, in single-chip and multi-chip packages. We sell directly to original equipment manufacturers, or OEMs, including LG Electronics, Inc., Samsung Electronics Co., Ltd.,
Sagem SA, Pantech & Curitel Communications, Inc., Motorola, Inc. and Sony Ericsson. We sell through distributors and original design manufacturers, or ODMs, to other system designers, including Hewlett-Packard Company, Dell Inc.,
Lenovo Group Ltd., Quanta Computers Inc., HTC Corporation and Compal Electronics, Inc.

We were incorporated in 1997 and commenced
operations in 1998. From 1998 to 2000, we were primarily involved in developing our technology, recruiting personnel and raising capital. Since 2001, we have focused on delivering products for what we believe to be large and high-growth market
opportunities. However, we operate in the semiconductor industry, which is cyclical and has experienced significant fluctuations, and our revenues are impacted by these broad industry trends. We operate as a fabless semiconductor company, working
with third parties to manufacture and assemble our integrated circuits, or ICs, rather than manufacturing them ourselves. This business model has enabled us to reduce our capital expenditures and fixed costs, while focusing our engineering and
design resources on our core strengths. We believe this model also reduces the impact on our business of seasonality, cyclicality and fluctuations in demand.

We currently derive a majority of our revenues from sales of our ChargePump product family, which is primarily used for driving white LED backlighting of color displays. In the future, we expect to derive an
increasing percentage of our revenues from other product families, such as switching regulator ICs, lithium-ion battery charger ICs and power system-on-chip integrated multifunction power products, or Power SOCs.

We are often required to anticipate what product designs will garner widespread customer demand, and we undertake significant product development efforts
well in advance of a products release, usually in advance of any of our customers expressly indicating demand for the product. Our product development efforts typically take from six months to two years until a production release, depending on
the products complexity. We also develop new process technologies, such as our proprietary ModularBCD process, that we believe will be critical in our development and production of certain new product families. Process technology development
is subject to similar timing risks, which can in turn delay development of new product families that rely on these new processes.

As a
result of the length of our development and sales cycle, our revenues for any period generally are weighted toward products introduced for sale in the prior one to two years. For example, in 2006, we generated a majority of our revenues from
products introduced in 2005 and 2004. Accordingly, we expect that the majority of our revenues in 2007 and 2008 may be dependent on products that we have only recently developed or that we



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may not yet have developed or introduced. In this regard, our present revenues are not necessarily representative of future sales because our future sales
are likely to be comprised of a different mix of products.

We sell our products through our direct sales and applications support
organization to original equipment manufacturers, or OEMs, original design manufacturers, or ODMs, and contract electronics manufacturers, as well as through arrangements with distributors that fulfill third-party orders for our products. Many of
our current distributors also serve as our sales representatives procuring orders for us to fill directly. We receive a substantial portion of our revenues from a small number of customers. We received an aggregate of approximately 80% of our
revenues from our ten largest customers in each of the years ended December 31, 2006 and 2005. Our largest direct customer is LG Electronics Inc., or LG, which accounted for 28% and 37% of our revenues for years ended December 31, 2006 and
2005, respectively.

It is difficult for us to forecast the demand for our products, in part because of the highly complex supply chain
between us and the consumer end users of the mobile consumer electronic devices that incorporate our products. We believe that our customers buying patterns are more predictable over a six-month period versus a three-month period, as a result,
our forecasting of quarterly results are more difficult than our half-year outlook. Additionally, our design wins are usually based on a half-yearly cycle, especially for the handset market. Consumer demand for new features changes rapidly. Parties
such as wireless service providers directly respond to and influence these consumer preferences through device selection and orders to the OEMs for these devices. Distributors, ODMs and contract electronics manufacturers often add an additional
layer of complexity between us and consumer end users. As a result, we must forecast demand not only from our customers, but also from other participants in this multi-level distribution channel. Our failure to accurately forecast demand can lead to
product shortages that can impede production by our customers and harm our relationship with these customers. Conversely, our failure to forecast declining demand or shifts in product mix can result in excess or obsolete inventory. For example, in
2004, we recorded an inventory write-down of $1.9 million because our forecast of demand in early 2004 proved to be optimistic and a significant portion of these newly manufactured products ended up with no forecasted demand in the second half of
2004. For the years ended December 31, 2006 and 2005, we recorded inventory write-downs of $3.3 million in both years. In addition, if we do not incorporate the partially fabricated wafers held for us by our suppliers into our products in a
timely fashion, we may still become obligated to purchase these materials, which may reduce our gross margins.

In the future, we expect
our sales to LG and our other large customers to continue to be susceptible to quarterly fluctuation as our customers manage their inventories for seasonal variations and other reasons. For example, in the fourth quarter of 2004, we experienced a
33% sequential quarterly decline in revenues from LG as a result of LGs prior increase in inventory of our products in the third quarter in anticipation of the peak fourth-quarter buying season for the mobile consumer electronic devices in
which our products are used.

Our largest customer, LG, began restructuring its supply chain in the three months ended March 31, 2005.
As part of this restructuring, LG required its suppliers to place inventory at a central supply hub, which is managed by a third party that supplies all of LGs divisions. This consolidation will reduce our ability to forecast orders from LG
because we will no longer be receiving orders directly from the LG divisions using our products. The inventory in LGs hub remains the suppliers property until LG pulls the inventory from the hub. Prior to LGs initiation of the hub
structure, the products that we shipped to LG became LGs property and we recognized revenue with respect to those products immediately upon our shipment to LG. Under the LG hub structure, we do not recognize revenue with respect to products
that we ship to LGs hub until we receive a report from LG that it has pulled those products from the hub. As our products in LGs hub will remain our inventory until LG pulls them from the hub, we have increased inventory risk as a result
of the LG hub structure.

We derive substantially all of our revenues from sales to foreign customers, particularly in Asia. For the year
ended December 31, 2006, approximately 94% of our revenues were from sales in Asia, including approximately 56% in South Korea, 20% in Taiwan, 17% in China and 1% in Japan. For the year ended December 31, 2005, approximately 96% of our
revenues were from sales in Asia, including approximately 58%



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in South Korea, 21% in Taiwan, 15% in China and 2% in Japan. For the year ended December 31, 2004, approximately 95% of our revenues were from sales in
Asia, including approximately 62% in South Korea, 17% in Taiwan, 15% in China and 1% in Japan. We believe that a substantial majority of our revenues will continue to come from customers located in Asia, where most of the mobile consumer electronic
devices that use our ICs are manufactured. As a result of this regional customer concentration, we have been and expect to continue to be particularly subject to economic and political events, health crises and other developments that impact our
customers in Asia. For example, our sales in late 2004 were harmed by the Chinese government reducing the availability of credit to domestic businesses. China, in particular, is an emerging market where forecasting by our distributors is not
accurate, and there can be rapid changes in the distribution system and market conditions. In order to limit our exposure to bad debt and late payment from distributors, we constrained sales to these customers by declining to fulfill orders, which
reduced our revenues for this period. We continue to closely monitor payments owed to us by our customers who may continue to be affected by this reduced availability of credit in China. All of our sales and substantially all of our cost of revenues
are denominated in U.S. dollars. In addition, a majority of our operating expenses are incurred either in the United States or in countries with currencies that are tied to the U.S. dollar, such as China and Hong Kong. Accordingly, we believe that
our overall exposure to foreign exchange risk is low.

In general, the average selling price, or ASP, of any specific product for a
specific application will decline over time. However, the ASP decline is application-specific and may be mitigated by replacement with related products in the same product family and new applications utilizing essentially the same product with
higher margins. For example, we developed a low-dropout linear regulator for use in a particular wireless handset, which experienced a decline in ASP as that type of device became a commodity in wireless handsets. However, we were able to use the
same base circuit architecture to design other products in the same family for newer wireless handsets and other applications that could be sold at higher margins. We expect that our revenues will normally be characterized by seasonally lower
sequential sales during the first quarter of a calendar year, and potentially late in the fourth quarter, because of the peak fourth quarter consumer buying season for the devices in which our products are used.

For the fiscal year ended December 31, 2006, our revenues increased as compared to fiscal 2005, on increased sales volume from Samsung, one of our
largest customers, and overall broad-based sales growth. Our margins for the year were 57%, which decreased by 4% over the prior year, primarily due to increased sales price rebates, unfavorable product mix attributable to increased product
complexity and changes in product specifications, increase in warranty experience rates, and were offset in part by product sales for which the inventory had been previously written off and improved economies of scale. Our operating expenses
increased due to a greater impact of stock based compensation from litigation expenses, adoption of SFAS 123(R), higher compensation related expenses and expenses associated with being a public company. We expect that our headcount will continue to
increase during fiscal 2007.

Recent Acquisition

On October 31, 2006, we acquired AP Semi, a wholly-owned subsidiary of IPCore Technologies Corporation (IPCore). AP Semi is a developer of analog power management integrated circuit products, whose
technology we believe complements our ongoing product design and development activities targeted at portable consumer electronic devices. We acquired AP Semi for a total consideration of $22.8 million where $20.8 million of the purchase
consideration was settled in cash and $1.3 million was incurred by us in transaction fees, including legal, valuation and accounting fees. The remaining amount of $700,000 is held in escrow and is payable to the employees contingent upon the
employees fulfilling a one year service period from the date of the transfer. This amount is disclosed as restricted cash on our Consolidated Balance Sheet and is being accounted for as a compensation expense. The purchase consideration of
approximately $22.1 million was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed on the basis of their estimated fair values on the acquisition date. The results of operations of AP Semi were included in
our Consolidated Statement of Operations from November 1, 2006. Please refer to Note 4 to the Consolidated Financial Statements for further details.



33



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##### Table of Contents

Results of Operations

The following table sets forth our unaudited historical operating results, as a percentage of revenues for the periods indicated:



|                                                    |  |                          |    |  |       |   |  |       |  
|--------------------------------------------------- |  | ------------------------ | -- |  | ----- | - |  | ----- | -
|                                                    |  | Years Ended December 31, |   
|                                                    |  | 2006                     |    |  | 2005  |   |  | 2004  |  
|NET SALES                                           |  | 100.0                    | %  |  | 100.0 | % |  | 100.0 | %
|Cost of revenues                                    |  | 42.6                     |    |  | 39.5  |   |  | 37.2  |  
|                                                    |  |                          |    |  |       |   |  |       |  
|GROSS PROFIT                                        |  | 57.4                     |    |  | 60.5  |   |  | 62.8  |  
|OPERATING EXPENSES:                                 |  |                          |    |  |       |   |  |       |  
|Research and development                            |  | 29.3                     |    |  | 28.5  |   |  | 27.8  |  
|Sales, general and administrative                   |  | 27.4                     |    |  | 25.8  |   |  | 21.0  |  
|Patent litigation                                   |  | 10.5                     |    |  |      |   |  | 0.9   |  
|                                                    |  |                          |    |  |       |   |  |       |  
|Total operating expenses                            |  | 67.2                     |    |  | 54.3  |   |  | 49.7  |  
|                                                    |  |                          |    |  |       |   |  |       |  
|INCOME (LOSS) FROM OPERATIONS                       |  | (9.8                     | )  |  | 6.2   |   |  | 13.1  |  
|INTEREST AND INVESTMENT INCOME (EXPENSE):           |  |                          |    |  |       |   |  |       |  
|Interest and investment income                      |  | 7.2                      |    |  | 3.0   |   |  | 0.3   |  
|Interest and other expense                          |  | (0.1                     | )  |  | (0.2  | ) |  | (0.1  | )
|                                                    |  |                          |    |  |       |   |  |       |  
|Total interest and investment income (expense), net |  | 7.1                      |    |  | 2.8   |   |  | 0.2   |  
|                                                    |  |                          |    |  |       |   |  |       |  
|INCOME (LOSS) BEFORE INCOME TAXES                   |  | (2.7                     | )  |  | 9.0   |   |  | 13.3  |  
|PROVISION (BENEFIT) FOR INCOME TAXES                |  | (0.1                     | )  |  | 5.9   |   |  | (16.3 | )
|                                                    |  |                          |    |  |       |   |  |       |  
|NET INCOME (LOSS)                                   |  | (2.6                     | )% |  | 3.1   | % |  | 29.6  | %
|                                                    |  |                          |    |  |       |   |  |       |  

Comparison of the Periods Ended December 31, 2006, 2005 and 2004

Revenues

The following table
illustrates our revenues by our principal product families:



|                                        |  |                               |        |                    |      |   |        |      |                    |  |     |        |  |                    |        |  |     |  
|--------------------------------------- |  | ----------------------------- | ------ | ------------------ | ---- | - | ------ | ---- | ------------------ |  | --- | ------ |  | ------------------ | ------ |  | --- | -
|                                        |  | Years Ended December 31,      |       
|                                        |  | 2006                          |        |                    | 2005 |   |        | 2004 |                   
|                                        |  | Amount                        |        | Percent ofRevenues |      |   | Amount |      | Percent ofRevenues |  |     | Amount |  | Percent ofRevenues |       
|                                        |  | (dollar amounts in thousands) |       
|Display and Lighting Solutions          |  | $                             | 45,121 |                    | 56   | % |        | $    | 35,755             |  | 52  | %      |  | $                  | 23,321 |  | 45  | %
|Interface and Power Management          |  |                               | 17,710 |                    | 22   |   |        |      | 18,835             |  | 28  |        |  |                    | 15,281 |  | 30  |  
|Voltage Regulation and DC/DC Conversion |  |                               | 17,571 |                    | 21   |   |        |      | 13,438             |  | 20  |        |  |                    | 12,297 |  | 24  |  
|Battery Management                      |  |                               | 759    |                    | 1    |   |        |      | 270                |  |    |        |  |                    | 446    |  | 1   |  
|                                        |  |                               |        |                    |      |   |        |      |                    |  |     |        |  |                    |        |  |     |  
|Total                                   |  | $                             | 81,161 |                    | 100  | % |        | $    | 68,298             |  | 100 | %      |  | $                  | 51,345 |  | 100 | %
|                                        |  |                               |        |                    |      |   |        |      |                    |  |     |        |  |                    |        |  |     |  

Our revenues consist of sales of our power management semiconductor products, net of sales
discounts, sales returns and distributor stock rotation allowances and incentives. All of our sales are denominated in U.S. dollars.

Our
revenues for the year ended December 31, 2006 as compared to 2005 increased due to increased sales of our Display and Lighting Solutions and Voltage Regulation and DC/DC Conversion products. Our average



34



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selling prices remained the same in fiscal 2006 as compared to 2005; therefore, the increase in revenues was almost entirely produced by an increase in unit
volume sales of approximately 18% for fiscal 2006 as compared to 2005. The increase in Display and Lighting Solutions revenues was primarily driven by increased sales of our ChargePump products and the increase in Voltage Regulation and DC/DC
Conversion revenues was primarily driven by increased sales of our SwitchReg products for fiscal 2006 as compared to 2005.

Our revenues
for the year ended December 31, 2005 as compared to 2004 increased due to increased sales of our Display and Lighting Solutions and Interface and Power Management products. Our average selling prices decreased by approximately 5% in fiscal 2005
as compared to 2004; therefore, the increase in revenues was produced by an increase in unit volume sales of approximately 40% for fiscal 2005 as compared to 2004. The increase in Display and Lighting Solutions revenues was primarily driven by
increased sales of our ChargePump products for fiscal 2005 as compared to 2004. The increase in Interface and Power Management revenues in fiscal 2005 as compared to 2004 was primarily attributable to increased sales of our SmartSwitch products. The
timing of our sales was also affected by our largest customer, LG, which began restructuring its supply chain during the first quarter of 2005 and required its suppliers to place inventory at a central supply hub. Revenue is not recognized until LG
pulls the product from the hub, which is when risk of loss and title transfers. We began shipping products to LGs hub in late May 2005 and as a result, although we shipped products to LGs hub and LG began to pull a limited number of
units of certain of our products from the hub in the second quarter of 2005, we believe that LGs use of units of our products that we had previously delivered to LG and recognized as revenue under our former procedures instead of pulling units
of those products from the hub resulted in our revenues attributable to LG being lower in the three months ended June 30, 2005 than they would have been had LG not initiated the hub structure. We believe that the majority of these inventories
were depleted during the second quarter of 2005. During the third and fourth quarter of 2005 LG increased inventory pulls from the Hub; however, aggregate sales to LG increased by 13% for fiscal 2005 as compared to 2004.

LG accounted for approximately 28%, 37% and 43% of our revenues in fiscal 2006, 2005 and 2004, respectively. One of our distributors, Asian Information
Technology Inc., accounted for approximately 11% of our revenues in fiscal 2005.

Gross Profit



|                    |  |                               |        |   |                    |   |        |   |  |   |        |         |  |      |  
|------------------- |  | ----------------------------- | ------ | - | ------------------ | - | ------ | - |  | - | ------ | ------- |  | ---- | -
|                    |  | Years EndedDecember 31,       |        |   | Increase(Decrease) |  
|                    |  | 2006                          |        |   | 2005               |   |       
|                    |  | (dollar amounts in thousands) |       
|Net revenues        |  | $                             | 81,161 |   |                    | $ | 68,298 |   |  | $ | 12,863 |         |  | 18.8 | %
|Cost of revenues    |  |                               | 34,556 |   |                    |   | 26,964 |   |  |   | 7,592  |         |  | 28.2 | %
|                    |  |                               |        |   |                    |   |        |   |  |   |        |         |  |      |  
|Gross profit        |  | $                             | 46,605 |   |                    | $ | 41,334 |   |  | $ | 5,271  |         |  | 12.8 | %
|                    |  |                               |        |   |                    |   |        |   |  |   |        |         |  |      |  
|Gross profit margin |  |                               | 57.4   | % |                    |   | 60.5   | % |  |   | (3.1   | )% ppt. |  |      |  

Gross profit is the difference between revenues and cost of revenues, and gross margin represents
gross profit as a percentage of revenues. Cost of revenues, also known as cost of goods sold, consists primarily of cost of processed silicon wafers, costs associated with assembly, test and shipping of our production ICs, cost of personnel
associated with manufacturing support and quality assurance and occupancy costs associated with our manufacturing support activities. Our support, quality and sustaining expenses related to manufacturing are included in our cost of revenues.

Our gross margin was 57% for the year ended December 31, 2006, compared to 61% for the year ended December 31, 2005. This
decrease was due to a number of factors:



| |  |  | 3 percentage points of the decrease is attributable to higher cost of revenues we incurred because of decreased production yields as a result of product and
customer specification complexity;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | 3 percentage points of the decrease is due to unfavorable product mix and decreases in our average selling prices;
| | - |  | ------------------------------------------------------------------------------------------------------------------



| |  |  | 1 percentage point of the decrease is attributable to higher warranty related expenses as a result of higher product return experience;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------



| |  |  | 1 percentage point of the decrease is attributable to amortization of intangible assets and fair market value adjustments of purchased inventory due to the
acquisition of AP Semi; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | these decreases were offset in part by a reduction in excess and obsolete expenses arising from improvement of inventory management contributing a 3 percentage
point of the increase and an improvement due to benefits from economies of scale contributing a 1 percentage point of the increase.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In 2006, the gross write-down of inventory was $3.3 million, offset by the sale of $3.3 million of previously written down inventory. During 2006, we physically scrapped $0.3 million of previously written-down
inventory.



|                    |  |                               |        |   |                    |   |        |   |  |   |        |         |  |      |  
|------------------- |  | ----------------------------- | ------ | - | ------------------ | - | ------ | - |  | - | ------ | ------- |  | ---- | -
|                    |  | Years EndedDecember 31,       |        |   | Increase(Decrease) |  
|                    |  | 2005                          |        |   | 2004               |   |       
|                    |  | (dollar amounts in thousands) |       
|Net revenues        |  | $                             | 68,298 |   |                    | $ | 51,345 |   |  | $ | 16,953 |         |  | 33.0 | %
|Cost of revenues    |  |                               | 26,964 |   |                    |   | 19,115 |   |  |   | 7,849  |         |  | 41.1 | %
|                    |  |                               |        |   |                    |   |        |   |  |   |        |         |  |      |  
|Gross profit        |  | $                             | 41,334 |   |                    | $ | 32,230 |   |  | $ | 9,104  |         |  | 28.2 | %
|                    |  |                               |        |   |                    |   |        |   |  |   |        |         |  |      |  
|Gross profit margin |  |                               | 60.5   | % |                    |   | 62.8   | % |  |   | (2.3   | )% ppt. |  |      |  

Our gross margin was 61% for the year ended December 31, 2005, compared to 63% for the year
ended December 31, 2004. This decrease was due to a number of factors:



| |  |  | 3 percentage points of the decrease is attributable to unfavorable product mix and decreases in our average selling prices;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------



| |  |  | 2 percentage points of the decrease is attributable to higher cost of revenues we incurred because of decreased production yields as a result of the earlier
production of several new products, due to customer requests; and
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | these decreases were offset in part by a reduction in warranty related expense arising from an improvement of our actual warranty experience contributing a 2
percentage point of the increase and an improvement due to benefits from economies of scale contributing a 1 percentage point of the increase.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In 2005, the gross write-down of inventory was $3.3 million, partially offset by the sale of $1.2 million of previously written down inventory for a net provision of $2.1 million. During 2005, we physically scrapped
$0.1 million of previously written-down inventory.

Research and Development



|                         |  |                               |        |   |                    |   |        |   |  |   |       |        |  |      |  
|------------------------ |  | ----------------------------- | ------ | - | ------------------ | - | ------ | - |  | - | ----- | ------ |  | ---- | -
|                         |  | Years EndedDecember 31,       |        |   | Increase(Decrease) |  
|                         |  | 2006                          |        |   | 2005               |   |       
|                         |  | (dollar amounts in thousands) |       
|Research and development |  | $                             | 23,772 |   |                    | $ | 19,479 |   |  | $ | 4,293 |        |  | 22.0 | %
|% of net revenues        |  |                               | 29.3   | % |                    |   | 28.5   | % |  |   | 0.8   | % ppt. |  |      |  

Research and development expenses consist primarily of employee and contractor compensation,
bonuses paid to employees for development of patentable designs under our patent award program and other performance bonuses, expenses for new product development and testing, expenses for process development, occupancy costs



36



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##### Table of Contents

of research and development personnel, depreciation on research and development related equipment, and prototype costs for new products not yet released to
production. We include expenses associated with new package development, engineering wafer lots and new test program developments in research and development expenses. We also include expenses associated with new product concept and definition and
the preparation and filing of patents and other intellectual property in research and development expenses. We anticipate that we will continue to invest significant amounts in research and development activities to pursue and develop new products,
processes, devices, packages and intellectual property.

Research and development expenses for fiscal 2006 as compared to 2005, increased
due to the following factors:



| |  |  | increased stock compensation expense of $1.6 million due to adoption of SFAS 123(R);
| | - |  | ------------------------------------------------------------------------------------



| |  |  | increased salary and employee related expense of $0.9 million due to increase in headcount;
| | - |  | -------------------------------------------------------------------------------------------



| |  |  | increased engineering related expenses of $0.7 million;
| | - |  | -------------------------------------------------------



| |  |  | AP Semis research and development expenses of $0.6 million;
| | - |  | ------------------------------------------------------------



| |  |  | in-process research and development expenses of $0.3 million from the acquisition of AP Semi; and
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | increased manufacturing support related expenses of $0.2 million.
| | - |  | -----------------------------------------------------------------

These higher expenses were incurred as we increased expenditures related to accelerated development activities for ModularBCD process and new products, particularly for switching regulators.



|                         |  |                               |        |   |                    |   |        |   |  |   |       |        |  |      |  
|------------------------ |  | ----------------------------- | ------ | - | ------------------ | - | ------ | - |  | - | ----- | ------ |  | ---- | -
|                         |  | Years Ended December 31,      |        |   | Increase(Decrease) |  
|                         |  | 2005                          |        |   | 2004               |   |       
|                         |  | (dollar amounts in thousands) |       
|Research and development |  | $                             | 19,479 |   |                    | $ | 14,306 |   |  | $ | 5,173 |        |  | 36.2 | %
|% of net revenues        |  |                               | 28.5   | % |                    |   | 27.8   | % |  |   | 0.7   | % ppt. |  |      |  

Research and development expenses for fiscal 2005 as compared to 2004, increased due to the
following factors:



| |  |  | increased engineering headcount, which grew from 49 at December 31, 2004 to 58 at December 31, 2005 and accounted for increased payroll expenses of $2.8
million;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased non-recurring engineering expenses of $1.0 million;
| | - |  | -------------------------------------------------------------



| |  |  | increased facilities and other occupancy expenses of $0.6 million;
| | - |  | ------------------------------------------------------------------



| |  |  | increased stock compensation expense of $0.5 million; and
| | - |  | ---------------------------------------------------------



| |  |  | increased depreciation expense of $0.3 million.
| | - |  | -----------------------------------------------

These higher expenses were incurred as we increased expenditures related to accelerated development activities for new products, particularly for switching regulators. Our stock-based compensation expense associated
with research and development personnel increased by $0.5 million due to an increased number of stock options granted to employees.

Sales, General and Administrative



|                                  |  |                               |        |   |      |   |        |                     |  |   |       |       |  |      |  
|--------------------------------- |  | ----------------------------- | ------ | - | ---- | - | ------ | ------------------- |  | - | ----- | ----- |  | ---- | -
|                                  |  | Years Ended December 31,      |        |   |      |  
|                                  |  | 2006                          |        |   | 2005 |   |        | Increase (Decrease) | 
|                                  |  | (dollar amounts in thousands) |       
|Sales, general and administrative |  | $                             | 22,272 |   |      | $ | 17,624 |                     |  | $ | 4,648 |       |  | 26.4 | %
|% of net revenues                 |  |                               | 27.4   | % |      |   | 25.8   | %                   |  |   | 1.6   | %ppt. |  |      |  



37



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##### Table of Contents

Sales expenses consist primarily of employee and contractor compensation, sales performance and other
bonuses, occupancy costs of sales personnel, sales commissions to independent sales representatives and promotional and marketing expenses. We include field application engineering support of sales activities in sales expense. General and
administrative expenses consist primarily of employee and contractor compensation, bonuses, occupancy costs of general and administrative personnel, insurance and fees paid for professional services. Costs associated with audit and taxation,
corporate governance and compliance, financial reporting and litigation matters are also general and administrative expenses.

Sales,
general and administrative expenses for the fiscal 2006 as compared to 2005, increased due to the following factors:



| |  |  | increased stock compensation expense of $2.0 million due to adoption of SFAS 123(R);
| | - |  | ------------------------------------------------------------------------------------



| |  |  | increased public company expenses of approximately $1.4 million, resulting primarily from our efforts to comply with the Sarbanes-Oxley Act of 2002, increased
consulting costs and D&O insurance;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased headcount to support our growing revenue base, which accounted for increased payroll expenses of $0.9 million;
| | - |  | ------------------------------------------------------------------------------------------------------------------------



| |  |  | increased travel expenditures of approximately $0.2 million, which was due to increased sales related activities; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------



| |  |  | AP Semis sales, general and administrative expenses of $0.1 million.
| | - |  | ---------------------------------------------------------------------



|                                  |  |                               |        |   |      |   |        |                     |  |   |       |       |  |      |  
|--------------------------------- |  | ----------------------------- | ------ | - | ---- | - | ------ | ------------------- |  | - | ----- | ----- |  | ---- | -
|                                  |  | Years Ended December 31,      |        |   |      |  
|                                  |  | 2005                          |        |   | 2004 |   |        | Increase (Decrease) | 
|                                  |  | (dollar amounts in thousands) |       
|Sales, general and administrative |  | $                             | 17,624 |   |      | $ | 10,768 |                     |  | $ | 6,856 |       |  | 63.7 | %
|% of net revenues                 |  |                               | 25.8   | % |      |   | 21.0   | %                   |  |   | 4.8   | %ppt. |  |      |  

Sales, general and administrative expenses for the fiscal 2005 as compared to 2004, increased due
to the following factors:



| |  |  | increased headcount to support our growing revenue base, which accounted for increased payroll expenses of $2.1 million;
| | - |  | ------------------------------------------------------------------------------------------------------------------------



| |  |  | increased public company expenses of approximately $1.2 million, which was primarily from D&O insurance and increased consulting costs;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased facilities and other occupancy expenses of $1.2 million, as we expanded our facilities to accommodate an increase in the number of employees;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased commissions paid to our outside sales representatives by approximately $0.7 million, which was due to increased sales;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased stock-based compensation expense associated with sales, general and administrative personnel by approximately $0.6 million due to an increased number
of stock options granted to employees;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | increased travel expenditures of approximately $0.4 million, which was due to increased sales related activities; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------



| |  |  | increased bad debt expense of $0.2 million, which was primarily due to one of our Chinese distributors.
| | - |  | -------------------------------------------------------------------------------------------------------



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##### Table of Contents

Patent Litigation



|                  |  |                               |       |   |      |   |     |                     |  |   |       |       |  |          |  
|----------------- |  | ----------------------------- | ----- | - | ---- | - | --- | ------------------- |  | - | ----- | ----- |  | -------- | -
|                  |  | Years Ended December 31,      |       |   |      |  
|                  |  | 2006                          |       |   | 2005 |   |     | Increase (Decrease) | 
|                  |  | (dollar amounts in thousands) |      
|Patent litigation |  | $                             | 8,536 |   |      | $ | 27  |                     |  | $ | 8,509 |       |  | 31,514.8 | %
|% of net revenues |  |                               | 10.5  | % |      |   | 0.0 | %                   |  |   | 10.5  | %ppt. |  |          |  

Patent litigation expenses for the year ended December 31, 2006 as compared to 2005,
increased due to increased legal expenses related to our ongoing litigation with Linear Technologies Corporation. For a description of litigation expenses, please see Note 12 to the Consolidated Financial Statements for further details.



|                  |  |                               |     |   |      |   |     |                     |  |   |      |        |  |       |   
|----------------- |  | ----------------------------- | --- | - | ---- | - | --- | ------------------- |  | - | ---- | ------ |  | ----- | --
|                  |  | Years Ended December 31,      |     |   |      |  
|                  |  | 2005                          |     |   | 2004 |   |     | Increase (Decrease) | 
|                  |  | (dollar amounts in thousands) |    
|Patent litigation |  | $                             | 27  |   |      | $ | 473 |                     |  | $ | (446 | )      |  | (94.3 | )%
|% of net revenues |  |                               | 0.0 | % |      |   | 0.9 | %                   |  |   | (0.9 | )%ppt. |  |       |   

Patent litigation expenses for the year ended December 31, 2005 as compared to 2004,
decreased due to decreased legal expenses related to patent litigation with Siliconix. For a description of litigation expenses, please see Note 12 to the Consolidated Financial Statements for further details.

Interest and Investment Income (Expense), Net

Interest and investment income (expense), net were $5.8 million, $1.9 million and $0.1 million for fiscal 2006, 2005 and 2004, respectively. The increase in interest and investment income was primarily attributable to higher interest income
earned on higher cash balances resulting from the proceeds of our initial public offering in August 2005.

Provision (Benefit) for
Income Taxes

Our income tax provision (benefit) was $(142,000), $4.1 million and $(8.4) million for fiscal 2006, 2005 and 2004,
respectively. Our effective tax rate for 2006 was substantially lower than the statutory federal rate primarily due to the adoption of SFAS 123(R). The Company adopted SFAS 123(R) as of January 1, 2006, and, as a result, incurred
significant stock-based compensation expense, most of which related to incentive stock options for which no corresponding tax benefit is recognized unless a disqualifying disposition occurs. Disqualifying dispositions result in a reduction of
income tax expense in the quarter when the disqualifying disposition occurs in an amount equal to the tax benefit relating to previously expensed stock compensation. As of December 31, 2006, we had not recorded tax benefits related to tax
deductions in excess of previously expensed stock compensation because the Company has a net operating loss carry forward. If such tax benefits related to tax deductions in excess of previously expensed stock compensation were recognized,
approximately $1.5 million would be recorded as an addition to paid-in-capital.



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##### Table of Contents

Liquidity and Capital Resources



|                                                             |  |                               |         |   |          |   |         |            |  |   |          |   |  |         |   
|------------------------------------------------------------ |  | ----------------------------- | ------- | - | -------- | - | ------- | ---------- |  | - | -------- | - |  | ------- | --
|                                                             |  | Years Ended December 31,      |         |   | Increase |  
|                                                             |  | 2006                          |         |   | 2005     |   |         | (Decrease) | 
|                                                             |  | (dollar amounts in thousands) |        
|Net cash provided by operating activities                    |  | $                             | 5,660   |   |          | $ | 7,026   |            |  | $ | (1,055   | ) |  | (15.0   | )%
|Net cash used in investing activities                        |  | $                             | (73,129 | ) |          | $ | (1,082  | )          |  | $ | (72,047  | ) |  | 6,658.7 | % 
|Net cash provided by financing activities                    |  | $                             | 1,228   |   |          | $ | 96,797  |            |  | $ | (95,880  | ) |  | (99.1   | )%
|Effect of exchange rate changes on cash and cash equivalents |  | $                             | (15     | ) |          | $ | (69     | )          |  | $ | 54       |   |  | (78.3   | )%
|                                                             |  |                               |         |   |          |   |         |            |  |   |          |   |  |         |   
|Net increase (decrease) on cash and cash equivalents         |  | $                             | (66,256 | ) |          | $ | 102,672 |            |  | $ | (168,928 | ) |  | (164.5  | )%
|                                                             |  |                               |         |   |          |   |         |            |  |   |          |   |  |         |   
|                                                             |  |                              
|                                                             |  | Years Ended December 31,      |         |   | Increase |  
|                                                             |  | 2005                          |         |   | 2004     |   |         | (Decrease) | 
|                                                             |  | (dollar amounts in thousands) |        
|Net cash provided by operating activities                    |  | $                             | 7,026   |   |          | $ | 6,899   |            |  | $ | 127      |   |  | 1.8     | % 
|Net cash used in investing activities                        |  | $                             | (1,082  | ) |          | $ | (2,514  | )          |  | $ | 1,432    |   |  | (57.0   | )%
|Net cash provided by financing activities                    |  | $                             | 96,797  |   |          | $ | 3,215   |            |  | $ | 93,582   |   |  | 2,910.8 | % 
|Effect of exchange rate changes on cash and cash equivalents |  | $                             | (69     | ) |          | $ | (157    | )          |  | $ | 88       |   |  | (56.1   | )%
|                                                             |  |                               |         |   |          |   |         |            |  |   |          |   |  |         |   
|Net increase on cash and cash equivalents                    |  | $                             | 102,672 |   |          | $ | 7,443   |            |  | $ | 95,229   |   |  | 1,279.4 | % 
|                                                             |  |                               |         |   |          |   |         |            |  |   |          |   |  |         |   

Our cash and cash equivalents were $58.1 million as of December 31, 2006 and $124.4 million
as of December 31, 2005.

Net Cash Provided by Operating Activities

Net cash generated by our operating activities was $5.7 million in 2006, compared to $7.0 million in 2005. Operating cash provided for fiscal year 2006
primarily consisted of our net loss of $2.1 million adjusted for:



| |  |  | stock-based compensation of $6.1 million;
| | - |  | -----------------------------------------



| |  |  | increases in accounts payable and accrued expenses of $1.9 million;
| | - |  | -------------------------------------------------------------------



| |  |  | depreciation and amortization expense of $1.8 million;
| | - |  | ------------------------------------------------------



| |  |  | decrease in accounts receivable of $0.3 million;
| | - |  | ------------------------------------------------



| |  |  | in-process research and development charge of $0.3 million;
| | - |  | -----------------------------------------------------------



| |  |  | which were in part offset by increase in inventory of $1.0 million;
| | - |  | -------------------------------------------------------------------



| |  |  | increase in deferred income taxes of $0.9 million;
| | - |  | --------------------------------------------------



| |  |  | increases in prepaid expenses and other current assets of $0.4 million; and
| | - |  | ---------------------------------------------------------------------------



| |  |  | decrease in bad debt expense of $0.3 million.
| | - |  | ---------------------------------------------

Our stock-based compensation expense has increased as a result of our adoption of SFAS 123(R) and the increased number of options granted to employees. The increases in accounts payable and accrued expenses are
primarily attributable to increased compensation costs due to increased headcount and increased overall consultancy and outside professional costs. Depreciation and amortization expenses have also risen due to $0.2 million amortization of intangible
assets acquired from AP Semi and increased investment in research and development and infrastructure. The increase in inventories was primarily due to increased purchases of materials and production to meet expected demand. Increase in deferred
income taxes was primarily due to current year timing differences, tax credits and tax loss carryforwards to be utilized in the future.



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Net cash generated by our operating activities was $7.0 million in 2005, compared to $6.9 million in
2004. Operating cash provided for fiscal year 2005 primarily consisted of our net income of $2.1 million adjusted for:



| |  |  | increases in accounts payable and accrued liabilities of $4.8 million;
| | - |  | ----------------------------------------------------------------------



| |  |  | decrease in deferred income taxes of $3.6 million;
| | - |  | --------------------------------------------------



| |  |  | stock-based compensation of $2.4 million;
| | - |  | -----------------------------------------



| |  |  | depreciation and amortization expense of $1.5 million;
| | - |  | ------------------------------------------------------



| |  |  | increase in income tax payables of $0.4 million;
| | - |  | ------------------------------------------------



| |  |  | decrease in inventory of $0.3 million;
| | - |  | --------------------------------------



| |  |  | bad debt expense of $0.3 million;
| | - |  | ---------------------------------



| |  |  | which were in part offset by increase in accounts receivable of $7.4 million; and
| | - |  | ---------------------------------------------------------------------------------



| |  |  | increase in other current assets of $0.9 million.
| | - |  | -------------------------------------------------

The increases in accounts payable and accrued liabilities are primarily attributable to increases in compensation costs due to increased headcount and increased overall consultancy and outside professional costs. The
decrease in deferred income taxes and increase in income tax payable is the result of the implementation of our international tax structure and higher taxable income. Our stock-based compensation expenses have risen as a result of increased number
of options granted to employees and consultants. Depreciation and amortization expenses have also risen and we expect that this will continue to rise as we invest in research and development and infrastructure. The reduction in inventory was
primarily due to increased shipments at the end of the quarter. Our accounts receivable balance increased due to the timing of increased fourth quarter sales. Increases in our current assets are primarily attributable to increased prepaid insurance,
which are amortized over the service period.

Net Cash Used in Investing Activities

Net cash used in our investing activities were $73.1 million, $1.1 million and $2.5 million in fiscal years 2006, 2005 and 2004, respectively. The
increase in cash usage from investing activities in 2006 was primarily due to:



| |  |  | net purchases and maturities of short-term investments of $49.6 million;
| | - |  | ------------------------------------------------------------------------



| |  |  | cash paid for the acquisition of AP Semi of $20.6 million;
| | - |  | ----------------------------------------------------------



| |  |  | purchase of various engineering software and equipment of $1.4 million to support our internal infrastructure growth;
| | - |  | ---------------------------------------------------------------------------------------------------------------------



| |  |  | purchases of long-term private equity investments of $0.9 million; and
| | - |  | ----------------------------------------------------------------------



| |  |  | funding of restricted cash escrow funds related to the acquisition of AP Semi of $0.7 million.
| | - |  | ----------------------------------------------------------------------------------------------

The reduction in cash used from 2004 to 2005 was in part due to our reduced need to purchase engineering and computer equipment and software to support
our internal infrastructure growth in 2005 compared to 2004, when we made significant investments in new information and engineering systems to support our future anticipated growth.

Net Cash Provided by Financing Activities

Net cash provided by our financing activities was $1.2
million, $96.8 million and $3.2 million in fiscal 2006, 2005 and 2004. Net cash provided by our financing activities in 2006 primarily consisted of net proceeds from exercises of common stock options and warrants of $1.0 million and tax benefit from
equity transactions of $0.3 million.



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Net cash provided by our financing activities in 2005 primarily consisted of $96.3 million of net
proceeds from the initial public offering, which closed on August 15, 2005, $0.3 million of proceeds from exercises of common stock options and warrants, $0.2 million of proceeds from the issuance of common stock for employee stock purchase
plan, offset by $26,000 for payments of our capital lease obligations.

Liquidity

We believe our existing cash balances, as well as cash expected to be generated from operating activities will be sufficient to meet our anticipated cash
needs for at least the next 12 months.

Our long-term future capital requirements will depend on many factors, including our level of
revenues, the timing and extent of spending to support our product development efforts, the expansion of sales and marketing activities, the timing of our introductions of new products, the costs to ensure access to adequate manufacturing capacity,
our level of acquisition activity or other strategic transactions, the continuing market acceptance of our products and the amount and intensity of our litigation activity. We could be required, or could elect, to seek additional funding through
public or private equity or debt financing and additional funds may not be available on terms acceptable to us or at all.

Off Balance Sheet
Arrangements

We have not entered into any transactions with unconsolidated entities whereby we have financial guarantees, subordinated
retained interests, derivative instruments or other contingent arrangements that expose us to material continuing risks, contingent liabilities, or any other obligation under a variable interest in an unconsolidated entity that provides financing,
liquidity, market risk or credit risk support to the Company.

Contractual Obligations

The following table describes our commitments to settle contractual obligations in cash as of December 31, 2006:



|                     |  |                  |        |              |   |              |  |                   |   |       |   |   |  |   |       
|-------------------- |  | ---------------- | ------ | ------------ | - | ------------ |  | ----------------- | - | ----- | - | - |  | - | ------
|                     |  | Less Than 1 Year |        | 1 to 3 Years |   | 3 to 5 Years |  | More Than 5 Years |   | Total
|                     |  | (in thousands)  
|Capital leases       |  | $                | 163    |              | $ | 205          |  | $                 |  |       | $ |  |  | $ | 368   
|Operating leases     |  |                  | 932    |              |   | 46           |  |                   |  |       |   |  |  |   | 978   
|Purchase commitments |  |                  | 9,687  |              |   |             |  |                   |  |       |   |  |  |   | 9,687 
|                     |  |                  |        |              |   |              |  |                   |   |       |   |   |  |   |       
|Total                |  | $                | 10,782 |              | $ | 251          |  | $                 |  |       | $ |  |  | $ | 11,033
|                     |  |                  |        |              |   |              |  |                   |   |       |   |   |  |   |       

In January 2007, we entered into a sublease for our future principal executive offices from
September 2007 through March 2016, occupying 42,174 square feet in Santa Clara, California. This facility will accommodate our principal engineering, technology, administrative and finance activities.

Critical Accounting Policies

Our discussion and
analysis of our financial condition and results of operations are based upon our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial
statements requires us to make estimates and judgments that affect the reported amount of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. We evaluate our estimates on an on-going basis,
including those related to uncollectible accounts receivable, inventories, income taxes, warranty obligations and contingencies and litigation. We base our estimates on historical experience and on various other assumptions that we believe to be
reasonable under the



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circumstances, the results of which form the basis for making the judgments we make about the carrying values of assets and liabilities that are not readily
apparent from other sources. Because these estimates can vary depending on the situation, actual results may differ from the estimates.

We
believe the following critical accounting policies affect our more significant judgments used in the preparation of our consolidated financial statements.

Revenue Recognition

We recognize revenues in accordance with Staff Accounting Bulletin
No. 104 (SAB 104), Revenue Recognition. SAB 104 requires that four basic criteria must be met before revenues can be recognized: (1) persuasive evidence of an arrangement exists; (2) delivery has occurred or
services have been rendered; (3) the fee is fixed or determinable; and (4) collectibility is reasonably assured. Criteria (1) and (2) are met upon receiving of purchase orders or signing of contracts and upon transfer of title
which generally occurs at the time of shipment. Determination of criteria (3) and (4) is based on managements judgment regarding the determinability of the fees charged for products delivered and the collectibility of those fees. If
changes in conditions cause management to determine these criteria are not met for certain future transactions, revenues recognized for any reporting period could decline.

A large portion of our sales is made through distribution arrangements with third parties. These arrangements include stock rotation rights that
generally permit the return of up to 5% of the previous six months purchases. We generally accept these returns in the second and fourth quarters of each annual period. We record estimated returns at the time of shipment. Our normal payment
term with our distributors is 30 days from invoice date. Certain of our distributor arrangements include the possibility of sales price rebates on specified products. At the time of shipment we recognize revenue, estimate the total sales price
rebate and reserve for those pricing rebates. We have also deferred revenue related to two of our distributors for which we are unable to reasonably estimate returns and recognize revenues from these distributors. We deferred revenue of $119,000 and
$67,000 at December 31, 2006 and 2005, respectively.

Bad Debt Allowances

We monitor the collectibility of accounts receivable primarily through review of the accounts receivable aging. When facts and circumstances indicate the
collection of specific amounts or from specific customers is at risk, we assess the impact on amounts recorded for bad debts and, if necessary, will record a charge in the period such determination is made. In addition, we reserve a percentage of
our accounts receivable to various customers that are significantly aged. We wrote-off approximately $306,000 and $0 for the years ended December 31, 2006 and 2005, respectively.

Warranty

We provide a
12-month warranty against defects in materials and workmanship and will either repair the goods, provide replacement products at no charge to the customer or refund amounts to the customer for defective products. We record estimated warranty costs,
based on historical experience over the preceding 12 months by product, at the time we recognize product revenues. As the complexity of our products increases, we could experience higher warranty claims relative to sales than we have previously
experienced, and we may need to increase these estimated warranty reserves.

Inventory Valuation

We value our inventory at the lower of the actual cost of our inventory or its current estimated market value. We write down inventory for obsolescence or
unmarketable inventories based upon assumptions about future demand and market conditions. Because of the cyclicality of the market in which we operate, inventory levels,



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obsolescence of technology and product life cycles, we generally write down inventory for product that is over 12 months old. Additionally, we generally
write down to net realizable value inventory in excess of six months forecasted product demand. Actual demand and market conditions may be lower than those that we project and this difference could have a material adverse effect on our gross
margins should inventory write-downs beyond those initially recorded become necessary. Alternatively, should actual demand and market conditions be more favorable than those we estimated at the time of such a write-down, our gross margins could be
favorably impacted in future periods.

Goodwill

In accordance with Statement of Financial Accounting Standards No. 142 (SFAS 142), Goodwill and Other Intangible Assets, goodwill is subject to annual impairment tests performed in
the third quarter of each year, or earlier if indicators of potential impairment exist and suggest that the carrying value of goodwill may not be recoverable from estimated discounted future cash flows. Because we have one reporting segment under
SFAS 142, we utilize the entity-wide approach to assess goodwill for impairment and compare our market value to our net book value to determine if an impairment exists. These impairment tests may result in impairment losses that could have a
material adverse impact on our results of operations.

Stock-Based Compensation

On January 1, 2006, we adopted Statement of Financial Accounting Standards No. 123 (revised 2004) (SFAS 123(R)), Share-Based
Payment, which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and directors including employee stock options and employee stock purchases related to the Employee Stock
Purchase Plan based on estimated fair values. SFAS 123(R) supersedes our previous accounting under Accounting Principles Board Opinion No. 25 (APB 25), Accounting for Stock Issued to Employees for periods beginning
in fiscal 2006. In March 2005, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 107 (SAB 107) relating to SFAS 123(R). We have applied the provisions of SAB 107 in our adoption of SFAS 123(R).

We adopted SFAS 123(R) using the modified prospective transition method, which requires the application of the accounting standard as of
January 1, 2006, the first day of our fiscal year 2006. Our Consolidated Financial Statements as of and for the year ended December 31, 2006 reflect the impact of SFAS 123(R). In accordance with the modified prospective transition method,
our Consolidated Financial Statements for periods prior to January 1, 2006 have not been restated to reflect, and do not include, the impact of SFAS 123(R). We account for stock-based awards to nonemployees in accordance with SFAS 123(R) and
Emerging Issues Task Force Issue No. 96-18.

On November 10, 2005, the Financial Accounting Standards Board (FASB)
issued FASB Staff Position No. FAS 123(R)-3, Transition Election Related to Accounting for Tax Effects of Share-Based Payment Awards. We have elected to adopt the alternative transition method provided in the FASB Staff Position for
calculating the tax effects of stock-based compensation pursuant to SFAS 123(R). The alternative transition method includes simplified methods for establishing the beginning balance of the additional paid-in capital pool (APIC pool)
related to the tax effects of employee stock-based compensation, and to determine the subsequent impact on the APIC pool and Consolidated Statements of Cash Flows of the tax effects of employee stock-based compensation awards that are outstanding
upon adoption of SFAS 123(R).

SFAS 123(R) requires companies to estimate the fair value of share-based payment awards on the date of grant
using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in our Consolidated Statement of Operations. The portion of stock-based compensation
expenses related to options granted prior to April 4, 2005, (the date of our initial filing of a registration statement for our eventual initial public offering (IPO), which is the date we are considered a public company under SFAS
123(R)) which were previously recorded under the provisions of APB 25, continue to be amortized over the respective vesting period and do not include an estimated forfeiture rate. The actual



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forfeitures of these options are recorded as they occur. These options granted prior to April 4, 2005 have been valued using the intrinsic value method
and as of December 31, 2006, the remaining unamortized portion of the deferred stock based compensation relating to these options is $2.9 million. Option awards granted after April 4, 2005 and before January 1, 2006 were based on
grant date fair value estimated in accordance with the pro forma provisions of Statement of Financial Accounting Standards No. 123 (SFAS 123), Accounting for Stock-Based Compensation. The fair value of these options was
previously calculated using the Black-Scholes option pricing model and, under SFAS 123(R), is adjusted for an estimated forfeiture rate and amortized over the vesting period. Option awards granted subsequent to our adoption of SFAS 123(R) on
January 1, 2006 are recorded as stock based compensation expense under the fair value method as prescribed by SFAS 123(R). The grant date fair value of these options was also calculated by using the Black-Scholes option pricing model.

Compensation expense for all share-based payment awards continues to be recognized using the straight-line single-option method.
Stock-based compensation expenses recognized in the Consolidated Statement of Operations for the year ended December 31, 2006, excluding amounts related to options granted prior to April 4, 2005, are based on awards that ultimately are
expected to vest and have been reduced for estimated forfeitures. SFAS 123(R) requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. In our pro
forma information required under SFAS 123 for the periods prior to fiscal 2006, we accounted for forfeitures as they occurred.

The
adoption of SFAS 123(R) on January 1, 2006 had the following impact on fiscal 2006 results: income before income tax was lower by $3.7 million, net income was lower by $3.5 million and basic and diluted EPS were both lower by $0.08.

See Note 5 to the Consolidated Financial Statements for additional information.

Accounting for Income Taxes

We account for income taxes under the provisions of Statement of Financial Accounting Standards No. 109 (SFAS 109), Accounting for Income Taxes. Under this method, we determine our deferred tax assets and
liabilities based upon the difference between the financial statement and tax bases of our assets and liabilities using tax rates in effect for the year in which we expect the differences to affect taxable income. The tax consequences of most events
recognized in the current years financial statements are included in determining income taxes currently payable. However, because tax laws and financial accounting standards differ in their recognition and measurement of assets, liabilities,
equity, revenues, expenses, gains and losses, differences arise between the amount of taxable income and pretax financial income for a year and between the tax bases of assets or liabilities and their reported amounts in our financial statements.
Because we assume that the reported amounts of assets and liabilities will be recovered and settled, respectively, a difference between the tax basis of an asset or a liability and its reported amount in the balance sheet will result in a taxable or
a deductible amount in some future years when the related liabilities are settled or the reported amounts of the assets are recovered, which gives rise to a deferred tax asset or liability. We must then assess the likelihood that our deferred tax
assets will be recovered from future taxable income and to the extent we believe that recovery is not likely, we must establish a valuation allowance.

As part of the process of preparing our consolidated financial statements, we are required to estimate our income taxes. This process involves estimating our actual current tax expense together with assessing
temporary differences that may result in deferred tax assets. Management judgment is required in determining any valuation allowance recorded against our net deferred tax assets. Prior to 2004, we had a full valuation allowance for our net deferred
tax assets as it was more likely than not that we would not realize those assets due to our history of losses. At December 31, 2004, we reassessed the amount of our valuation allowance considering the fact that we experienced two consecutive
profitable years. In determining the amount of our deferred tax assets for which realization is more likely than not and the amount of the corresponding valuation allowance, we consider the current and two preceding years income before income
taxes, excluding amounts not deductible or includable



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for tax return purposes, as available objective evidence supporting estimated levels of future taxable income. Using this evidence, we estimate the amount of
future taxable income through the 20-year carry forward period for net operating losses, which becomes the basis for our estimate of realizable net deferred tax assets and the amount of our valuation allowance. As a result, we recognized a reduction
of our provision for income taxes of $11.2 million in the fourth quarter of 2004 due to the reversal of our valuation allowance. While management has considered future taxable income and ongoing tax planning strategies in assessing the need for the
valuation allowance, if we were to determine that an increase in our valuation allowance in the future is necessary, an adjustment to the deferred tax asset would result in additional income tax expense in such period.

During May 2005, we implemented an international structure. We have completed transitioning certain of our logistics, order entry, purchasing and billing
functions to our new office in Macau, which is in closer geographic proximity to our suppliers and customers. Our corporate headquarters remain in the United States. In connection with this transition, we have implemented cost-sharing and license
arrangements with our wholly-owned British Virgin Islands subsidiary, with which our wholly-owned Macau subsidiary has implemented a similar licensing arrangement to develop and license intellectual property. Pursuant to these arrangements, our
British Virgin Islands and Macau subsidiaries have the non-exclusive rights to manufacture, market and distribute our products in certain geographic markets. Furthermore, our Macau subsidiary is authorized to contract with third parties for the
manufacture, test and assembly of our products. As a result of these changes, we expect the percentage of our consolidated pre-tax income represented by our foreign operations to continue to increase and eventually exceed the domestic percentage.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk

Our cash equivalents and investments are subject to market risk, primarily interest rate and credit risk. Our investments are managed by outside
professional managers within investment guidelines set by us. Such guidelines include security type, credit quality and maturity and are intended to limit market risk by restricting the investments to high quality debt instruments with relatively
short-term maturities.

We do not use derivative financial instruments in our investment portfolio. Investment debt securities are
classified as available-for-sale, and no gains or losses are recognized by us in our results of operations due to changes in interest rates unless such securities are sold prior to maturity. These investments are reported at fair value with the
related unrealized gains and losses being included in accumulated other comprehensive income, a component of stockholders equity.

Foreign
Currency Exchange Risk

Our sales outside the United States are transacted in U.S. dollars. Accordingly, our sales are not generally
impacted by foreign currency rate changes. With exception to our operations in Hong Kong and Macau, the primary functional currency of our offshore operations was the local currency, primarily the New Taiwan Dollar and the Chinese Yuan. To date,
fluctuations in foreign currency exchange rates have not had a material impact on our results of operations.



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ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

CONSOLIDATED FINANCIAL STATEMENTS

Contents



|                                                                         |  |     
|------------------------------------------------------------------------ |  | ----
|                                                                         |  | Page
|Report of Independent Registered Public Accounting Firm                  |  | 48  
|                                                                         | 
|Consolidated Balance Sheets                                              |  | 49  
|                                                                         | 
|Consolidated Statements of Operations                                    |  | 50  
|                                                                         | 
|Consolidated Statements of Stockholders Equity and Comprehensive Income |  | 51  
|                                                                         | 
|Consolidated Statements of Cash Flows                                    |  | 53  
|                                                                         | 
|Notes to Consolidated Financial Statements                               |  | 54  



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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and
Stockholders of

Advanced Analogic Technologies Incorporated

Sunnyvale, CA

We have
audited the accompanying consolidated balance sheets of Advanced Analogic Technologies Incorporated and subsidiaries (the Company) as of December 31, 2006 and 2005, and the related consolidated statements of operations,
stockholders equity and comprehensive income (loss) and cash flows for each of the three years in the period ended December 31, 2006. These financial statements are the responsibility of the Companys management. Our responsibility
is to express an opinion on these consolidated financial statements based on our audits.

We conducted our audits in accordance with the
standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the
overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such
consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2006 and 2005, and the results of its operations and its cash flows for each of the three years in the period
ended December 31, 2006 in conformity with accounting principles generally accepted in the United States of America.

As described in
Note 1 to the Consolidated Financial Statements, the Company adopted Statement of Financial Accounting Standards No. 123(R), Share Based Payment, effective January 1, 2006.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of the
Companys internal control over financial reporting as of December 31, 2006, based on the criteria established in Internal Control  Integrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway
Commission and our report dated March 7, 2007 expressed an unqualified opinion on managements assessment of the effectiveness of the Companys internal control over financial reporting and an unqualified opinion on the effectiveness
of the Companys internal control over financial reporting.

/s/    DELOITTE & TOUCHE
LLP

San Jose, California

March 7, 2007



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

CONSOLIDATED BALANCE SHEETS

(in thousands, except share data)



|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|-------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------- | ------- | - | ----------------- | - | ------- | -
|                                                                                                                                       |  | December 31, 2006 |         |   | December 31, 2005 |  
|ASSETS                                                                                                                                 |  |                   |         |   |                   |   |         |  
|CURRENT ASSETS                                                                                                                         |  |                   |         |   |                   |   |         |  
|Cash and cash equivalents                                                                                                              |  | $                 | 58,121  |   |                   | $ | 124,377 |  
|Short-term investments                                                                                                                 |  |                   | 49,566  |   |                   |   |        |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|Total cash, cash equivalents and short-term investments                                                                                |  |                   | 107,687 |   |                   |   | 124,377 |  
|Accounts receivable, net of allowances of $1,644 in 2006 and $1,031 in 2005                                                            |  |                   | 11,037  |   |                   |   | 10,496  |  
|Inventories                                                                                                                            |  |                   | 8,480   |   |                   |   | 6,561   |  
|Prepaid expenses and other current assets                                                                                              |  |                   | 2,223   |   |                   |   | 1,656   |  
|Restricted cash                                                                                                                        |  |                   | 700     |   |                   |   |        |  
|Deferred income taxes                                                                                                                  |  |                   | 857     |   |                   |   | 3,780   |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|Total current assets                                                                                                                   |  |                   | 130,984 |   |                   |   | 146,870 |  
|PROPERTY AND EQUIPMENTNET                                                                                                             |  |                   | 2,812   |   |                   |   | 2,257   |  
|OTHER ASSETS                                                                                                                           |  |                   | 1,375   |   |                   |   | 384     |  
|DEFERRED INCOME TAXES                                                                                                                  |  |                   | 5,965   |   |                   |   | 1,812   |  
|INTANGIBLESNET                                                                                                                        |  |                   | 3,287   |   |                   |   |        |  
|GOODWILL                                                                                                                               |  |                   | 16,775  |   |                   |   |        |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|TOTAL ASSETS                                                                                                                           |  | $                 | 161,198 |   |                   | $ | 151,323 |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|LIABILITIES AND STOCKHOLDERS EQUITY                                                                                                   |  |                   |         |   |                   |   |         |  
|CURRENT LIABILITIES                                                                                                                    |  |                   |         |   |                   |   |         |  
|Accounts payable                                                                                                                       |  | $                 | 6,968   |   |                   | $ | 5,196   |  
|Accrued liabilities                                                                                                                    |  |                   | 6,714   |   |                   |   | 4,738   |  
|Income tax payable                                                                                                                     |  |                   | 1,250   |   |                   |   | 963     |  
|Current portion of capital lease obligations                                                                                           |  |                   | 138     |   |                   |   |        |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|Total current liabilities                                                                                                              |  |                   | 15,070  |   |                   |   | 10,897  |  
|Other long term liabilities                                                                                                            |  |                   | 191     |   |                   |   | 24      |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|Total liabilities                                                                                                                      |  |                   | 15,261  |   |                   |   | 10,921  |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|COMMITMENTS (NOTE 7)                                                                                                                   |  |                   |         |   |                   |   |         |  
|                                                                                                                                       |  |                  
|STOCKHOLDERS EQUITY:                                                                                                                  |  |                   |         |   |                   |   |         |  
|Common stock, $0.001 par value100,000,000 shares authorized; 44,064,729 and 43,165,933 shares issued and outstanding in 2006 and
2005 |  |                   | 44      |   |                   |   | 43      |  
|Additional paid-in capital                                                                                                             |  |                   | 160,088 |   |                   |   | 155,002 |  
|Deferred stock compensation                                                                                                            |  |                   | (2,935  | ) |                   |   | (5,444  | )
|Accumulated other comprehensive loss                                                                                                   |  |                   | (480    | ) |                   |   | (501    | )
|Accumulated deficit                                                                                                                    |  |                   | (10,780 | ) |                   |   | (8,698  | )
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|Total stockholders equity                                                                                                             |  |                   | 145,937 |   |                   |   | 140,402 |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  
|TOTAL                                                                                                                                  |  | $                 | 161,198 |   |                   | $ | 151,323 |  
|                                                                                                                                       |  |                   |         |   |                   |   |         |  

See accompanying notes to consolidated financial statements.



49



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##### Table of Contents

ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amount)



|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|-------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------ | ------ | - | ---- | - | ------ | ---- |  | - | ------ | -
|                                                                                                                                       |  | Years Ended December 31, |       
|                                                                                                                                       |  | 2006                     |        |   | 2005 |   |        | 2004 | 
|NET SALES                                                                                                                              |  | $                        | 81,161 |   |      | $ | 68,298 |      |  | $ | 51,345 |  
|Cost of revenues (including stock-based compensation of $268, $112 and $42 in 2006, 2005 and 2004, respectively)                       |  |                          | 34,556 |   |      |   | 26,964 |      |  |   | 19,115 |  
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|GROSS PROFIT                                                                                                                           |  |                          | 46,605 |   |      |   | 41,334 |      |  |   | 32,230 |  
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|OPERATING EXPENSES:                                                                                                                    |  |                          |        |   |      |   |        |      |  |   |        |  
|Research and development (including stock-based compensation of $2,403, $784 and $300 in 2006, 2005 and 2004, respectively)            |  |                          | 23,772 |   |      |   | 19,479 |      |  |   | 14,306 |  
|Sales, general and administrative (including stock-based compensation of $3,472, $1,493 and $576 in 2006, 2005 and 2004,
respectively) |  |                          | 22,272 |   |      |   | 17,624 |      |  |   | 10,768 |  
|Patent litigation                                                                                                                      |  |                          | 8,536  |   |      |   | 27     |      |  |   | 473    |  
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|Total operating expenses                                                                                                               |  |                          | 54,580 |   |      |   | 37,130 |      |  |   | 25,547 |  
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|INCOME (LOSS) FROM OPERATIONS                                                                                                          |  |                          | (7,975 | ) |      |   | 4,204  |      |  |   | 6,683  |  
|INTEREST AND INVESTMENT INCOME (EXPENSES):                                                                                             |  |                          |        |   |      |   |        |      |  |   |        |  
|Interest and investment income                                                                                                         |  |                          | 5,823  |   |      |   | 2,058  |      |  |   | 157    |  
|Interest and other expense                                                                                                             |  |                          | (72    | ) |      |   | (121   | )    |  |   | (43    | )
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|Total interest and investment income (expense), net                                                                                    |  |                          | 5,751  |   |      |   | 1,937  |      |  |   | 114    |  
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|INCOME (LOSS) BEFORE INCOME TAXES                                                                                                      |  |                          | (2,224 | ) |      |   | 6,141  |      |  |   | 6,797  |  
|PROVISION (BENEFIT) FOR INCOME TAXES                                                                                                   |  |                          | (142   | ) |      |   | 4,056  |      |  |   | (8,381 | )
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|NET INCOME (LOSS)                                                                                                                      |  | $                        | (2,082 | ) |      | $ | 2,085  |      |  | $ | 15,178 |  
|                                                                                                                                       |  |                          |        |   |      |   |        |      |  |   |        |  
|NET INCOME (LOSS) PER SHARE:                                                                                                           |  |                          |        |   |      |   |        |      |  |   |        |  
|Basic                                                                                                                                  |  | $                        | (0.05  | ) |      | $ | 0.10   |      |  | $ | 3.43   |  
|Diluted                                                                                                                                |  | $                        | (0.05  | ) |      | $ | 0.05   |      |  | $ | 0.46   |  
|WEIGHTED AVERAGE SHARES USED IN NET INCOME (LOSS) PER SHARE CALCULATION:                                                               |  |                          |        |   |      |   |        |      |  |   |        |  
|Basic                                                                                                                                  |  |                          | 43,477 |   |      |   | 21,025 |      |  |   | 4,420  |  
|Diluted                                                                                                                                |  |                          | 43,477 |   |      |   | 40,147 |      |  |   | 33,214 |  

See accompanying notes to consolidated financial statement.



50



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##### Table of Contents

ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY

AND COMPREHENSIVE INCOME

(in thousands)



|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|---------------------------------------------------------- |  | --------------------------- | - |  | -------- | -- | -------------------------- | -------- | ----------------------------- | - | -------- | -------------------------------------- | -- | -------- | -------------------- | ------ | ------------ | ----- | - | ------ | - |  | ------ | - |  | ------ | -- | - | ------ | ------ | - | ------ | - | ------ | - |  | ------ |  | - | -- |  | - | ------- |  | - | ------- | - |  | - | ---- | - |  | - | ------- | - |  | - | ------- | -
|                                                           |  | Convertible Preferred Stock |   |  |          |    | Additional Paid-in Capital |          | Deferred Stock Compen- sation |   |          | Accum-ulatedOther Compre- hensive loss |    |          | Accum- lated Deficit |        |              | Total |  
|                                                           |  | Series A                    |   |  | Series B |    |                            | Series C |                               |   | Series D |                                        |    | Series E |                      |        | Common Stock |       |   |        |   | 
|                                                           |  | Shares                      |   |  | Amount   |    |                            | Shares   |                               |   | Amount   |                                        |    | Shares   |                      |        | Amount       |       |   | Shares |   |  | Amount |   |  | Shares |    |   | Amount |        |   | Shares |   | Amount |   |  |        |  |  
|BALANCEJanuary 1, 2004                                    |  | 1,570                       |   |  | $        | 2  |                            |          | 3,900                         |   |          | $                                      | 4  |          |                      | 2,845  |              |       | $ | 3      |   |  | 8,742  |   |  | $      | 9  |   |        | 6,458  |   |        | $ | 6      |   |  | 3,234  |  | $ | 3  |  | $ | 45,883  |  | $ |        |   |  | $ | (259 | ) |  | $ | (25,961 | ) |  | $ | 19,690  |  
|Net income                                                 |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   | 15,178  |   |  |   | 15,178  |  
|Foreign currency translation adjustments, net of taxes     |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   | (157 | ) |  |   |         |   |  |   | (157    | )
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|Comprehensive income                                       |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 15,021  |  
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|Exercise of preferred stock warrants                       |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  | 103    |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   | 274     |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 274     |  
|Issuance of preferred stock                                |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        | 833    |   |        |   | 1      |   |  |        |  |   |    |  |   | 1,968   |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 1,969   |  
|Exercise of common stock options                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  | 3,613  |  |   | 4  |  |   | 1,066   |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 1,070   |  
|Exercise of common stock warrants                          |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  | 272    |  |   |    |  |   | 11      |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 11      |  
|Deferred stock compensation                                |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   | 7,736   |  |   | (7,736) |   |  |   |      |   |  |   |         |   |  |   |        |  
|Amortization of deferred stock compensation                |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   | 844     |   |  |   |      |   |  |   |         |   |  |   | 844     |  
|Stock-based compensation to non-employees                  |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   | 74      |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 74      |  
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|BALANCEDecember 31, 2004                                  |  | 1,570                       |   |  | $        | 2  |                            |          | 3,900                         |   |          | $                                      | 4  |          |                      | 2,845  |              |       | $ | 3      |   |  | 8,845  |   |  | $      | 9  |   |        | 7,291  |   |        | $ | 7      |   |  | 7,119  |  | $ | 7  |  | $ | 57,012  |  | $ | (6,892  | ) |  | $ | (416 | ) |  | $ | (10,783 | ) |  | $ | 38,953  |  
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|Net income                                                 |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   | 2,085   |   |  |   | 2,085   |  
|Foreign currency translation adjustments, net of taxes     |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   | (85  | ) |  |   |         |   |  |   | (85     | )
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|Comprehensive income                                       |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 2,000   |  
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|Conversion of preferred stock to common                    |  | (1,570                      | ) |  |          | (2 | )                          |          | (3,900                        | ) |          |                                        | (4 | )        |                      | (2,845 | )            |       |   | (3     | ) |  | (8,845 | ) |  |        | (9 | ) |        | (7,291 | ) |        |   | (7     | ) |  | 24,628 |  |   | 25 |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |        |  
|Initial public offering of common stock                    |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  | 10,590 |  |   | 10 |  |   | 96,246  |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 96,256  |  
|Exercise of common stock options                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  | 658    |  |   | 1  |  |   | 293     |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 294     |  
|Tax benefit from stock option exercises                    |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   | 17      |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 17      |  
|Exercise of common stock warrants                          |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  | 142    |  |   |    |  |   | 25      |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 25      |  
|Vesting of restricted common stock                         |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   | 220     |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 220     |  
|Issuance of common stock from employee stock purchase plan |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  | 29     |  |   |    |  |   | 248     |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 248     |  
|Deferred stock compensation                                |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   | 674     |  |   | (674    | ) |  |   |      |   |  |   |         |   |  |   |        |  
|Amortization of deferred stock compensation                |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   | 2,122   |   |  |   |      |   |  |   |         |   |  |   | 2,122   |  
|Stock-based compensation to non-employees                  |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   | 267     |  |   |         |   |  |   |      |   |  |   |         |   |  |   | 267     |  
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  
|BALANCEDecember 31, 2005                                  |  |                            |   |  | $        |   |                            |          |                              |   |          | $                                      |   |          |                      |       |              |       | $ |       |   |  |       |   |  | $      |   |   |        |       |   |        | $ |       |   |  | 43,166 |  | $ | 43 |  | $ | 155,002 |  | $ | (5,444  | ) |  | $ | (501 | ) |  | $ | (8,698  | ) |  | $ | 140,402 |  
|                                                           |  |                             |   |  |          |    |                            |          |                               |   |          |                                        |    |          |                      |        |              |       |   |        |   |  |        |   |  |        |    |   |        |        |   |        |   |        |   |  |        |  |   |    |  |   |         |  |   |         |   |  |   |      |   |  |   |         |   |  |   |         |  

See accompanying notes to consolidated financial statements.



51



---

##### Table of Contents

ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY

AND COMPREHENSIVE
INCOME(Continued)

(in thousands)



|                                                                           |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   |         |  
|-------------------------------------------------------------------------- |  | --------------------------- |  | -------- | - | -------------------------- | - | -------- | ----------------------------- | -------- |  | -------------------------------------- |  | ------ | -------------------- | ------ | - | ------ | - | ------ |  | ------ |  | ------ | - |  | ------ |  | - | -- |  | - | ------- | - |  | - | ------ | - |  | - | ---- | - |  | - | ------- | - |  | - | ------- | -
|                                                                           |  | Convertible Preferred Stock |  |          |   | Additional Paid-in Capital |   |          | Deferred Stock Compen- sation |          |  | Accum-ulatedOther Compre- hensive loss |  |        | Accum- lated Deficit |        |   | Total  |  
|                                                                           |  | Series A                    |  | Series B |   | Series C                   |   | Series D |                               | Series E |  | Common Stock                           |  |        |                      |        |  
|                                                                           |  | Shares                      |  | Amount   |   | Shares                     |   | Amount   |                               | Shares   |  | Amount                                 |  | Shares |                      | Amount |   | Shares |   | Amount |  | Shares |  | Amount |   |  |        |  |  
|BALANCEDecember 31, 2005                                                  |  |                            |  | $        |  |                            |  |          | $                             |         |  |                                       |  | $      |                     |        |  |        | $ |       |  |       |  | $      |  |  | 43,166 |  | $ | 43 |  | $ | 155,002 |   |  | $ | (5,444 | ) |  | $ | (501 | ) |  | $ | (8,698  | ) |  | $ | 140,402 |  
|Net loss                                                                   |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   |      |   |  |   | (2,082  | ) |  |   | (2,082  | )
|Foreign currency translation adjustments, net of taxes                     |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   | 17   |   |  |   |         |   |  |   | 17      |  
|Net unrealized gain on short-term investments                              |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   | 4    |   |  |   |         |   |  |   | 4       |  
|                                                                           |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   |         |  
|Comprehensive loss                                                         |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   | (2,061  | )
|                                                                           |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   |         |  
|Additional expenses incurred in initial public offering                    |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   | (5      | ) |  |   |        |   |  |   |      |   |  |   |         |   |  |   | (5      | )
|Exercise of common stock options                                           |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  | 891    |  |   | 1  |  |   | 979     |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   | 980     |  
|Tax benefit from equity transactions                                       |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   | 311     |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   | 311     |  
|Exercise of common stock warrants                                          |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  | 8      |  |   |    |  |   | 4       |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   | 4       |  
|Stock-based compensation expense to employees                              |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   | 3,876   |   |  |   | 102    |   |  |   |      |   |  |   |         |   |  |   | 3,978   |  
|Vesting of restricted common stock                                         |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   | 153     |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   | 153     |  
|Reversal of deferred stock-based compensation due to employee terminations |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   | (502    | ) |  |   | 502    |   |  |   |      |   |  |   |         |   |  |   |        |  
|Amortization of deferred stock compensation                                |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   | 1,905  |   |  |   |      |   |  |   |         |   |  |   | 1,905   |  
|Stock-based compensation to non-employees                                  |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   | 270     |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   | 270     |  
|                                                                           |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   |         |  
|BALANCEDecember 31, 2006                                                  |  |                            |  | $        |  |                            |  |          | $                             |         |  |                                       |  | $      |                     |        |  |        | $ |       |  |       |  | $      |  |  | 44,065 |  | $ | 44 |  | $ | 160,088 |   |  | $ | (2,935 | ) |  | $ | (480 | ) |  | $ | (10,780 | ) |  | $ | 145,937 |  
|                                                                           |  |                             |  |          |   |                            |   |          |                               |          |  |                                        |  |        |                      |        |   |        |   |        |  |        |  |        |   |  |        |  |   |    |  |   |         |   |  |   |        |   |  |   |      |   |  |   |         |   |  |   |         |  

See accompanying notes to consolidated financial statements.



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)



|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|------------------------------------------------------------------------------------------------- |  | ------------------------ | ------- | - | ---- | - | ------- | ---- |  | - | ------ | -
|                                                                                                  |  | Years Ended December 31, |        
|                                                                                                  |  | 2006                     |         |   | 2005 |   |         | 2004 | 
|CASH FLOWS FROM OPERATING ACTIVITIES:                                                             |  |                          |         |   |      |   |         |      |  |   |        |  
|Net income (loss)                                                                                 |  | $                        | (2,082  | ) |      | $ | 2,085   |      |  | $ | 15,178 |  
|Adjustments to reconcile net income (loss) to net cash provided by operating activities:          |  |                          |         |   |      |   |         |      |  |   |        |  
|Depreciation and amortization                                                                     |  |                          | 1,820   |   |      |   | 1,483   |      |  |   | 1,050  |  
|Stock-based compensation                                                                          |  |                          | 6,143   |   |      |   | 2,389   |      |  |   | 918    |  
|Provision for doubtful accounts                                                                   |  |                          | (300    | ) |      |   | 298     |      |  |   | 121    |  
|Tax benefit from stock option exercises                                                           |  |                          |        |   |      |   | 17      |      |  |   |       |  
|Loss on sales of plant, property and equipment                                                    |  |                          | 49      |   |      |   | 19      |      |  |   |       |  
|In-process research and development                                                               |  |                          | 290     |   |      |   |        |      |  |   |       |  
|Changes in operating assets and liabilities, net of effects from acquisition of AP Semi:          |  |                          |         |   |      |   |         |      |  |   |        |  
|Accounts receivable                                                                               |  |                          | 324     |   |      |   | (7,389  | )    |  |   | 1,186  |  
|Inventory                                                                                         |  |                          | (1,005  | ) |      |   | 317     |      |  |   | (3,147 | )
|Prepaid expenses and other current assets                                                         |  |                          | (429    | ) |      |   | (930    | )    |  |   | (421   | )
|Other assets                                                                                      |  |                          | (72     | ) |      |   | 6       |      |  |   | (185   | )
|Deferred income taxes                                                                             |  |                          | (922    | ) |      |   | 3,586   |      |  |   | (9,178 | )
|Accounts payable                                                                                  |  |                          | 600     |   |      |   | 2,262   |      |  |   | 84     |  
|Accrued expenses                                                                                  |  |                          | 1,274   |   |      |   | 2,491   |      |  |   | 814    |  
|Other long term liabilities                                                                       |  |                          | (9      | ) |      |   | 24      |      |  |   |       |  
|Income taxes payable                                                                              |  |                          | (21     | ) |      |   | 368     |      |  |   | 479    |  
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|Net cash provided by operating activities                                                         |  |                          | 5,660   |   |      |   | 7,026   |      |  |   | 6,899  |  
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|CASH FLOWS FROM INVESTING ACTIVITIES:                                                             |  |                          |         |   |      |   |         |      |  |   |        |  
|Purchases of property and equipment                                                               |  |                          | (1,397  | ) |      |   | (1,082  | )    |  |   | (2,514 | )
|Purchases of short-term investments                                                               |  |                          | (70,464 | ) |      |   |        |      |  |   |       |  
|Purchases of long-term investments                                                                |  |                          | (900    | ) |      |   |        |      |  |   |       |  
|Proceeds from sales and maturities of short-term investments                                      |  |                          | 20,900  |   |      |   |        |      |  |   |       |  
|Funding of restricted cash escrow funds                                                           |  |                          | (700    | ) |      |   |        |      |  |   |       |  
|Acquisition of AP Semi, net of cash acquired                                                      |  |                          | (20,568 | ) |      |   |        |      |  |   |       |  
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|Net cash used in investing activities                                                             |  |                          | (73,129 | ) |      |   | (1,082  | )    |  |   | (2,514 | )
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|CASH FLOWS FROM FINANCING ACTIVITIES:                                                             |  |                          |         |   |      |   |         |      |  |   |        |  
|Proceeds from issuance of Series E convertible preferred stock                                    |  |                          |        |   |      |   |        |      |  |   | 1,969  |  
|Proceeds from initial public offering, net of commissions and offering expenses                   |  |                          | (5      | ) |      |   | 96,256  |      |  |   |       |  
|Proceeds from exercise of common stock options and common stock warrants                          |  |                          | 984     |   |      |   | 319     |      |  |   | 1,080  |  
|Proceeds from exercise of preferred stock warrants                                                |  |                          |        |   |      |   |        |      |  |   | 274    |  
|Proceeds from issuance of common stock for employee stock purchase plan                           |  |                          |        |   |      |   | 248     |      |  |   |       |  
|Tax benefit from equity transactions                                                              |  |                          | 311     |   |      |   |        |      |  |   |       |  
|Principal payments on capital lease obligations                                                   |  |                          | (62     | ) |      |   | (26     | )    |  |   | (108   | )
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|Net cash provided by financing activities                                                         |  |                          | 1,228   |   |      |   | 96,797  |      |  |   | 3,215  |  
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS                                      |  |                          | (15     | ) |      |   | (69     | )    |  |   | (157   | )
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                                              |  |                          | (66,256 | ) |      |   | 102,672 |      |  |   | 7,443  |  
|CASH AND CASH EQUIVALENTSBeginning of period                                                     |  |                          | 124,377 |   |      |   | 21,705  |      |  |   | 14,262 |  
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|CASH AND CASH EQUIVALENTSEnd of period                                                           |  | $                        | 58,121  |   |      | $ | 124,377 |      |  | $ | 21,705 |  
|                                                                                                  |  |                          |         |   |      |   |         |      |  |   |        |  
|NONCASH INVESTING AND FINANCING ACTIVITIES:                                                       |  |                          |         |   |      |   |         |      |  |   |        |  
|Vesting of restricted common stock                                                                |  | $                        | 153     |   |      | $ | 220     |      |  | $ |       |  
|SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:                                                 |  |                          |         |   |      |   |         |      |  |   |        |  
|Increases in accounts payable and accrued liabilities related to property and equipment purchases |  | $                        | 126     |   |      | $ |        |      |  | $ |       |  
|Property and equipment acquired under capital leases                                              |  | $                        | 371     |   |      | $ |        |      |  | $ |       |  
|Cash paid for interest                                                                            |  | $                        | 8       |   |      | $ | 4       |      |  | $ | 5      |  
|Cash paid for income taxes                                                                        |  | $                        | 496     |   |      | $ | 128     |      |  | $ | 293    |  

See accompanying notes to consolidated financial statements.



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Years Ended December 31, 2006, 2005 and 2004

1. BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES

OrganizationAdvanced Analogic Technologies Incorporated and its wholly-owned subsidiaries (the Company) was incorporated on August 21, 1997 (inception) in California, reincorporated on April 11, 2005 in
Delaware and is a supplier of power management semiconductors for mobile consumer electronic devices such as wireless handsets, notebook computers, smartphones, digital cameras and digital audio players. The Company focuses its design and marketing
efforts on the application-specific power management needs of consumer, communications and computing applications in these rapidly-evolving devices. Through the Companys Total Power Management approach, the Company offers a broad range of
products that support multiple applications, features and services across a diverse set of mobile consumer electronic devices.

Principles of ConsolidationThe consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.

EstimatesThe preparation of financial statements in conformity with generally accepted accounting principles requires
management to make estimates and assumptions that affect reported amounts of assets, and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from those estimates.

Concentration of Credit RiskFinancial
instruments which potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents, short-term investments and receivables. The Company invests only in high-quality credit instruments with maturities of two
years or less and limits the amount invested with any one issuer. The Company performs ongoing credit evaluations of its customers financial condition and limits the amount of credit extended when deemed necessary. At December 31, 2006,
three customers accounted for 24%, 21% and 9% of gross accounts receivable. At December 31, 2005, three customers accounted for 32%, 15% and 13% of gross accounts receivable.

Cash and Cash EquivalentsCash equivalents are highly liquid investments purchased with original maturities of 90 days or less at the time of
purchase. Investments with maturities of over 90 days at the time of purchase are classified as short-term investments.

InvestmentsThe Company accounts for its investment instruments in accordance with Statement of Financial Accounting Standards No. 115 (SFAS 115), Accounting for Certain Investments in Debt and Equity
Securities. At December 31, 2006, the Company had investments in short-term debt instruments which were classified as available-for-sale under SFAS 115. Short-term investments consist primarily of high grade debt securities with a
maturity of greater than 90 days when purchased. The Company classifies investments with maturities greater than one year as short-term investments as it considers all investments as a potential source of operating cash regardless of maturity date.
The Companys debt securities are carried at fair market value with the related unrealized gains and losses included in accumulated other comprehensive income, which is a separate component of stockholders equity. The cost of securities
sold is based on specific identification method. Interest earned on securities is included in Interest and Investment Income in the Consolidated Statements of Operations. The fair value of investments is determined using quoted market
prices for those securities.

In addition to debt securities, a portion of the Companys investment portfolio consists of an equity
investment in a non-publicly traded company. The Company has classified this investment as long-term other assets. This investment is carried at cost and evaluated for other than temporary impairment at each reporting period. (See Note 2)



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



InventoryInventory is stated at the lower of the actual cost (first-in, first-out
method) of the inventory or its current market value. Inventory consists of work in process (principally processed wafers and products at third party assembly and test subcontractors) and finished goods. Because of the cyclicality of the market in
which the Company operates, inventory levels, obsolescence of technology and product life cycles, the Company generally writes down inventory for product that is over 12 months old. Additionally, the Company generally writes down excess inventory to
net realizable value inventory in excess of six months forecasted product demand. During 2006, 2005 and 2004, the Company recorded inventory write-downs of $3.3 million, $3.3 million and $1.9 million, respectively, due to excess and obsolete
inventory.

Property and EquipmentProperty and equipment are recorded at cost less accumulated depreciation and amortization.
Depreciation and amortization are computed using the straight-line method over estimated useful lives for computers and software of two to three years, office and test equipment of three to five years and leasehold improvements over the shorter of
the lease term or the estimated useful life of the improvement.

Goodwill and Intangible AssetsGoodwill represents the excess
of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. The Company follows the provisions of Statement of Financial Accounting Standards No. 142 (SFAS
142), Goodwill and Other Intangible Assets, under which goodwill is no longer subject to amortization. The Company evaluates goodwill for impairment, at a minimum, on an annual basis and whenever events and changes in circumstances
suggest that the carrying amount may not be recoverable. Impairment of goodwill is tested at the reporting unit level by comparing the reporting units carrying amount, including goodwill, to the fair value of the reporting unit. The fair
values of the reporting units are estimated using a combination of the income, or discounted cash flows, approach and the market approach, which utilize comparable companies data. If the carrying amount of the reporting unit exceeds its fair
value, goodwill is considered impaired and a second step is performed to measure the amount of impairment loss, if any. Because the Company has one reporting unit under SFAS 142, it utilizes the entity-wide approach to assess goodwill for
impairment.

Intangible assets resulting from the acquisition of Analog Power Semiconductor Corporation (AP Semi) are estimated
by management based on the fair value of assets received. See Note 4 for additional information on the Companys AP Semi acquisition. As a result of the acquisition, the Company recorded $3.5 million of intangible assets on the date of
acquisition. The acquired intangible assets are being amortized over their useful lives of three years and consisted of the following:



|                          |  |                     |       |                         |   |      |     |  |                     |       |                         |   |     |  |   |   |  |   |  
|------------------------- |  | ------------------- | ----- | ----------------------- | - | ---- | --- |  | ------------------- | ----- | ----------------------- | - | --- |  | - | - |  | - | -
|                          |  | December 31, 2006   |       | December 31, 2005      
|                          |  | GrossCarryingAmount |       | AccumulatedAmortization |   |      | Net |  | GrossCarryingAmount |       | AccumulatedAmortization |   | Net
|                          |  | (in thousands)     
|Core developed technology |  | $                   | 2,900 |                         | $ | (161 | )   |  | $                   | 2,739 |                         | $ |    |  | $ |  |  | $ | 
|Customer relationship     |  |                     | 580   |                         |   | (32  | )   |  |                     | 548   |                         |   |    |  |   |  |  |   | 
|                          |  |                     |       |                         |   |      |     |  |                     |       |                         |   |     |  |   |   |  |   |  
|Total intangible assets   |  | $                   | 3,480 |                         | $ | (193 | )   |  | $                   | 3,287 |                         | $ |    |  | $ |  |  | $ | 
|                          |  |                     |       |                         |   |      |     |  |                     |       |                         |   |     |  |   |   |  |   |  



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



Amortization expense of purchased intangible assets was $193,000 for the year ended December 31,
2006. The estimated future amortization expense of purchased intangible assets as of December 31, 2006 is as follows:



|                         |  |                     |      
|------------------------ |  | ------------------- | -----
|Year Ending December 31, |  | AmortizationExpense
|                         |  | (in thousands)     
|2007                     |  | $                   | 1,160
|2008                     |  |                     | 1,160
|2009                     |  |                     | 967  
|2010                     |  |                     |     
|2011                     |  |                     |     
|                         |  |                     |      
|Total                    |  | $                   | 3,287
|                         |  |                     |      

Long-Lived AssetsThe Company evaluates long-lived assets for impairment whenever
events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When the sum of the undiscounted future net cash flows expected to result from the use of the asset and its eventual disposition is less than
its carrying amount, an impairment loss would be measured based on the fair value of the asset compared to the carrying amount.

Revenue
RecognitionThe Company recognizes revenues in accordance with Staff Accounting Bulletin No. 104 (SAB 104), Revenue Recognition. SAB 104 requires that four basic criteria be met before revenues can be
recognized: (1) persuasive evidence of an arrangement exists; (2) delivery has occurred or services have been rendered; (3) the fee is fixed or determinable; and (4) collectibility is reasonably assured. Criteria (1) and
(2) are met upon receiving of purchase orders or signing of contracts and upon transfer of title which generally occurs at the time of shipment. Determination of criteria (3) and (4) is based on managements judgment regarding
the determinability of the fees charged for products delivered and the collectibility of those fees. If changes in conditions cause management to determine these criteria are not met for certain future transactions, revenues recognized for any
reporting period could decline.

A large portion of the Companys sales is made through distribution arrangements with third parties.
These arrangements include stock rotation rights that generally permit the return of up to 5% of the previous six months purchases. The Company generally accepts these returns in the second and fourth quarters of each annual period. The
Company records estimated returns at the time of shipment. The Companys normal payment terms with its distributors are 30 days from invoice date. Certain of the Companys distributor arrangements include the possibility of sales price
rebates on specified products. At the time of shipment the Company recognizes revenue, estimates the total sales price rebate and reserves for those pricing rebates. The Company has also deferred revenue related to two of its distributors for which
the Company is unable to reasonably estimate returns, and recognizes revenues from these distributors upon their subsequent resale to their customers. The Company deferred revenue of $119,000 and $67,000 at December 31, 2006 and 2005,
respectively.

The Company makes estimates of potential future returns and sales allowances related to current period product revenue. The
Company analyzes historical return rates and changes in customer demand when evaluating the adequacy of returns and sales allowances. Although the Company believes it has a reasonable basis for its estimates, such estimates may differ from actual
returns and sales allowances. These differences may materially impact reported revenue and amounts ultimately collected on accounts receivable.

Bad Debt AllowancesThe Company monitors the collectibility of accounts receivable primarily through review of the accounts receivable aging. When facts and circumstances indicate the collection of specific



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



amounts or from specific customers is at risk, the Company assesses the impact on amounts recorded for bad debts and, if necessary, will record a charge in
the period such determination is made. In addition, the Company reserves a percentage of its accounts receivable to various customers that are significantly aged based on its historical collection experience. The Company wrote-off approximately
$306,000 and $0 for the years ended December 31, 2006 and 2005, respectively.

Warranty CostsThe Company provides a
12-month warranty against defects in materials and workmanship and will either repair the goods, provide replacement products at no charge to the customer or refund amounts to the customer for defective products. The Company records estimated
warranty costs, based on historical experience over the preceding 12 months by product, at the time it recognizes product revenues. A summary of the accrued warranty, which is included in accrued liabilities, for the years ended December 31,
2006 and 2005, is as follows:



|     |  |                                 |     |                               |   |               |  |   |                            |   |  |   |    
|---- |  | ------------------------------- | --- | ----------------------------- | - | ------------- |  | - | -------------------------- | - |  | - | ---
|     |  | Balance atBeginningof thePeriod |     | Accrualsfor Salesin thePeriod |   | CostsIncurred |  |   | Balance atEnd of thePeriod
|     |  | (in thousands)                 
|2005 |  | $                               | 513 |                               | $ | 67            |  | $ | (541                       | ) |  | $ | 39 
|2006 |  |                                 | 39  |                               |   | 319           |  |   | (154                       | ) |  |   | 204

Advertising CostsAdvertising costs such as trade shows, promotions, public relations,
and publications are expensed as incurred and are included in sales and marketing expenses. Advertising costs were $712,000, $631,000 and $537,000 for 2006, 2005 and 2004, respectively.

Research and DevelopmentResearch and development expenses are included in operating expenses as incurred.

Income TaxesIncome taxes are accounted for under the provisions of Statement of Financial Accounting Standards No. 109,
Accounting for Income Taxes. Under this method, the deferred tax assets and liabilities are estimated based upon the difference between the financial statement and tax bases of assets and liabilities using tax rates in effect for the
year in which the Company expects the differences to affect taxable income. The tax consequences of most events recognized in the current years financial statements are included in determining income taxes currently payable. However, because
tax laws and financial accounting standards differ in their recognition and measurement of assets, liabilities, equity, revenues, expenses, gains and losses, differences arise between the amount of taxable income and pretax financial income for a
year and between the tax bases of assets or liabilities and their reported amounts in the financial statements. Because the Company assumes that the reported amounts of assets and liabilities will be recovered and settled, respectively, a difference
between the tax basis of an asset or a liability and its reported amount in the balance sheet will result in a taxable or a deductible amount in some future years when the related liabilities are settled or the reported amounts of the assets are
recovered, which gives rise to a deferred tax asset. The Company must then assess the likelihood that the deferred tax assets will be recovered from future taxable income and to the extent the Company believes that recovery is not likely, the
Company must establish a valuation allowance.

Management judgment is required in determining any valuation allowance recorded against the
Companys net deferred tax assets. For example, prior to 2004 the Company had a full valuation allowance for the net deferred tax assets as it was more likely than not that the Company would not realize those assets due to the history of
losses. At December 31, 2004, the Company reassessed the amount of the valuation allowance considering the fact that the Company experienced two consecutive profitable years. In determining the amount



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



of the deferred tax assets for which realization is more likely than not and the amount of the corresponding valuation allowance, management considers the
current and two preceding years income before income taxes, excluding amounts not deductible or includable for tax return purposes, as available objective evidence supporting estimated levels of future taxable income. Using this evidence,
management estimates the amount of future taxable income through the 20 year carry forward period for net operating losses, which becomes the basis for the estimate of realizable net deferred tax assets and the amount of the valuation allowance. As
a result of this assessment at December 31, 2004, the Company recognized a benefit of approximately $11.2 million from the reversal of the valuation allowance. While management has considered future taxable income and ongoing tax planning
strategies in assessing the need for the valuation allowance, if management determines that an increase in the Companys valuation allowance in the future is necessary, an adjustment to the deferred tax asset would result in additional income
tax expense in such period.

The Company estimates the provision for income taxes based on income before income taxes for each tax
jurisdiction in which the Company has established operations. The Company does not provide incremental U.S. income taxes on un-remitted foreign earnings taxed at rates less than the U.S. tax rates as such earnings are considered permanently
invested.

Stock-Based CompensationOn January 1, 2006, the Company adopted Statement of Financial Accounting Standards
No. 123 (revised 2004) (SFAS 123(R)), Share-Based Payment, which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and directors including employee
stock options and employee stock purchases related to the Employee Stock Purchase Plan based on estimated fair values. SFAS 123(R) supersedes the Companys previous accounting under Accounting Principles Board Opinion No. 25 (APB
25), Accounting for Stock Issued to Employees for periods beginning in fiscal 2006. In March 2005, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 107 (SAB 107) relating to SFAS 123(R).
The Company has applied the provisions of SAB 107 in its adoption of SFAS 123(R).

The Company adopted SFAS 123(R) using the modified
prospective transition method, which requires the application of the accounting standard as of January 1, 2006, the first day of the Companys fiscal year 2006. The Companys Consolidated Financial Statements as of and for the year
ended December 31, 2006 reflect the impact of SFAS 123(R). In accordance with the modified prospective transition method, the Companys Consolidated Financial Statements for periods prior to January 1, 2006 have not been restated to
reflect, and do not include, the impact of SFAS 123(R). The Company accounts for stock-based awards to nonemployees in accordance with SFAS 123(R) and Emerging Issues Task Force Issue No. 96-18.

On November 10, 2005, the Financial Accounting Standards Board (FASB) issued FASB Staff Position No. FAS 123(R)-3, Transition
Election Related to Accounting for Tax Effects of Share-Based Payment Awards. The Company has elected to adopt the alternative transition method provided in the FASB Staff Position for calculating the tax effects of stock-based compensation
pursuant to SFAS 123(R). The alternative transition method includes simplified methods for establishing the beginning balance of the additional paid-in capital pool (APIC pool) related to the tax effects of employee stock-based
compensation, and to determine the subsequent impact on the APIC pool and Consolidated Statements of Cash Flows of the tax effects of employee stock-based compensation awards that are outstanding upon adoption of SFAS 123(R).



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



SFAS 123(R) requires companies to estimate the fair value of share-based payment awards on the date
of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in the Companys Consolidated Statement of Operations. The portion of
stock-based compensation expenses related to options granted prior to April 4, 2005, (the date of the Companys initial filing of a registration statement for its eventual initial public offering (IPO), which is the date the
Company is considered a public company under SFAS 123(R)) which were previously recorded under the provisions of APB 25, continue to be amortized over the respective vesting period and do not include an estimated forfeiture rate. The actual
forfeitures of these options are recorded as they occur. These options granted prior to April 4, 2005 have been valued using the intrinsic value method and as of December 31, 2006, the remaining unamortized portion of the deferred stock
based compensation relating to these options is $2.9 million. Option awards granted after April 4, 2005 and before January 1, 2006 were based on grant date fair value estimated in accordance with the pro forma provisions of Statement of
Financial Accounting Standards No. 123 (SFAS 123), Accounting for Stock-Based Compensation. The fair value of these options was previously calculated using the Black-Scholes option pricing model and, under SFAS 123(R),
is adjusted for an estimated forfeiture rate and amortized over the vesting period. Option awards granted subsequent to the Companys adoption of SFAS 123(R) on January 1, 2006 are recorded as stock based compensation expense under the
fair value method as prescribed by SFAS 123(R). The grant date fair value of these options was also calculated by using the Black-Scholes option pricing model.

Compensation expense for all share-based payment awards continues to be recognized using the straight-line single-option method. Stock-based compensation expenses recognized in the Consolidated Statement of Operations
for the year ended December 31, 2006, excluding amounts related to options granted prior to April 4, 2005, are based on awards that ultimately are expected to vest and have been reduced for estimated forfeitures. SFAS 123(R) requires
forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. In the Companys pro forma information required under SFAS 123 for the periods prior to fiscal
2006, the Company accounted for forfeitures as they occurred.

The adoption of SFAS 123(R) on January 1, 2006 had the following impact
on fiscal 2006 results: income before income tax was lower by $3.7 million, net income was lower by $3.5 million and basic and diluted EPS were both lower by $0.08.

The following table illustrates the effect on net income and earnings per share had stock-based compensation expense been recorded for the fiscal 2005 and 2004 based on the fair-value method under SFAS 123.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



|                                                                                                               |  |                |        |   |      |   |        |  
|-------------------------------------------------------------------------------------------------------------- |  | -------------- | ------ | - | ---- | - | ------ | -
|                                                                                                               |  | 2005           |        |   | 2004 |  
|                                                                                                               |  | (in thousands) |       
|Net incomeas reported                                                                                         |  | $              | 2,085  |   |      | $ | 15,178 |  
|Add: stock-based employee compensation included in reported net income, net of related tax effects             |  |                | 2,106  |   |      |   | 838    |  
|Less: stock-based employee compensation expense determined using fair value method, net of related tax effects |  |                | (2,913 | ) |      |   | (940   | )
|                                                                                                               |  |                |        |   |      |   |        |  
|Net incomepro forma                                                                                           |  | $              | 1,278  |   |      | $ | 15,076 |  
|                                                                                                               |  |                |        |   |      |   |        |  
|Basic net income per share:                                                                                    |  |                |        |   |      |   |        |  
|As reported                                                                                                    |  | $              | 0.10   |   |      | $ | 3.43   |  
|                                                                                                               |  |                |        |   |      |   |        |  
|Pro forma                                                                                                      |  | $              | 0.06   |   |      | $ | 3.41   |  
|                                                                                                               |  |                |        |   |      |   |        |  
|Diluted net income per share:                                                                                  |  |                |        |   |      |   |        |  
|As reported                                                                                                    |  | $              | 0.05   |   |      | $ | 0.46   |  
|                                                                                                               |  |                |        |   |      |   |        |  
|Pro forma                                                                                                      |  | $              | 0.03   |   |      | $ | 0.45   |  
|                                                                                                               |  |                |        |   |      |   |        |  

Foreign CurrencyThe functional currencies of the Companys foreign subsidiaries
are their local currency, with the exception of the Companys Macau, Cayman and Hong Kong entities, which are U.S. dollar functional. Accordingly, gains and losses from translation of the financial statements of foreign subsidiaries with a
local functional currency are reported as a separate component of accumulated other comprehensive loss, net of related tax effects. Foreign currency transaction (losses) gains were $(37,000), $(94,000) and $45,000 for 2006, 2005 and 2004,
respectively.

Comprehensive Income (Loss)In accordance with SFAS No. 130, Reporting Comprehensive Income,
the Company reports, by major components and as a single total, the change in its stockholders equity during the period from non-owner sources. The unrealized gains and losses on short-term investments and foreign currency translation
adjustments are comprehensive income items applicable to the Company. Statements of comprehensive income (loss) have been included within the Consolidated Statements of Stockholders Equity.

Net Income (Loss) Per ShareThe Company calculates net income (loss) per share in accordance with SFAS No. 128, Earnings Per
Share. Under SFAS No. 128, basic net income (loss) per common share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period excluding shares subject to
repurchase. Diluted net income per common share reflects the effects of potentially dilutive securities, which consist of convertible preferred stock and common stock options and warrants, common stock subject to repurchase and preferred stock
warrants. Potentially dilutive securities



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



have been excluded from the computation for 2006 as they are anti-dilutive due to Companys net loss. A reconciliation of shares used in the calculation
of basic and diluted net income (loss) per share is as follows:



|                                                              |  |                          |   |  |        |   |  |        |  
|------------------------------------------------------------- |  | ------------------------ | - |  | ------ | - |  | ------ | -
|                                                              |  | Years Ended December 31, |  
|                                                              |  | 2006                     |   |  | 2005   |   |  | 2004   |  
|                                                              |  | (in thousands)           |  
|Weighted average common shares outstanding                    |  | 43,785                   |   |  | 21,713 |   |  | 4,669  |  
|Weighted average shares subject to repurchase                 |  | (308                     | ) |  | (688   | ) |  | (249   | )
|                                                              |  |                          |   |  |        |   |  |        |  
|Shares used to calculate basic net (loss) income per share    |  | 43,477                   |   |  | 21,025 |   |  | 4,420  |  
|                                                              |  |                          |   |  |        |   |  |        |  
|Effect of dilutive securities:                                |  |                          |   |  |        |   |  |        |  
|Common and preferred stock warrants                           |  |                         |   |  | 68     |   |  | 374    |  
|Convertible preferred stock                                   |  |                         |   |  | 14,777 |   |  | 24,247 |  
|Common stock options                                          |  |                         |   |  | 3,587  |   |  | 3,924  |  
|Weighted average shares subject to repurchase                 |  |                         |   |  | 688    |   |  | 249    |  
|Employee stock purchase plan                                  |  |                         |   |  | 2      |   |  |       |  
|                                                              |  |                          |   |  |        |   |  |        |  
|Dilutive potential common stock                               |  |                         |   |  | 19,122 |   |  | 28,794 |  
|                                                              |  |                          |   |  |        |   |  |        |  
|Weighted average common shares outstanding, assuming dilution |  | 43,477                   |   |  | 40,147 |   |  | 33,214 |  
|                                                              |  |                          |   |  |        |   |  |        |  

For 2006, outstanding common stock options of 2,879,158 shares, weighted average shares subject to
repurchase of 308,167 shares and common stock warrants of 40,900 shares have been excluded as they are antidilutive due to the Companys net loss.

Recently Issued Accounting Standards In September 2006, the FASB issued Statement of Financial Accounting Standards No. 157 (SFAS 157), Fair Value Measurements. SFAS 157
defines fair value, the methods used to measure fair value, and expands disclosures about fair value measurements. This Statement applies to accounting pronouncements that require or permit fair value measurements. The adoption of SFAS No. 157
will be effective for financial statements issued for fiscal years beginning after November 15, 2007, and interim periods within those fiscal years. The Company is currently evaluating the impact, if any, that SFAS 157 may have on the
Companys financial conditions, results of operations or liquidity.

In September 2006, the United States Securities and Exchange
Commission issued Staff Accounting Bulletin No. 108 (SAB 108), Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements. SAB 108 provides guidance on
the consideration of the effects of prior year misstatements in quantifying current year misstatements for the purpose of a materiality assessment. SAB 108 establishes an approach that requires quantification of financial statement errors based
on the effects on each of the Companys balance sheet and statement of operations financial statements and the related financial statement disclosures. SAB 108 permits existing public companies to record the cumulative effect of initially
applying this approach in the first year ending after November 15, 2006 by recording the necessary correcting adjustments to the carrying values of assets and liabilities as of the beginning of that year with the offsetting adjustment recorded
to the opening balance of retained earnings. Additionally, the use of the cumulative effect transition method requires detailed disclosure of the nature and amount of each individual error being corrected through the cumulative adjustment and how
and when it arose. The adoption of SAB 108 did not have a material effect on the Companys consolidated financial statements.

In June
2006, the FASB issued FASB Interpretation No. 48 (FIN 48), Accounting for Uncertainty in Income Taxes  an interpretation of FASB Statement No. 109. FIN 48 provides guidance for the recognition,



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



de-recognition, and measurement in financial statements of tax positions taken in previously filed tax returns or tax positions expected to be taken in tax
returns. FIN 48 requires an entity to recognize the financial statement impact of a tax position when it is more likely than not that the position will be sustained upon examination. If the tax position meets the more-likely-than-not recognition
threshold, the tax effect is recognized at the largest amount of the benefit that is greater than fifty percent likely of being realized upon ultimate settlement. FIN 48 requires that a liability created for unrecognized tax benefits shall be
presented as a liability and not combined with deferred tax liabilities or assets. The application of FIN 48 may also affect the tax bases of assets and liabilities and therefore may change or create deferred tax liabilities or assets. The Company
believes that the adoption of FIN 48 will require the reclassification of certain deferred tax liabilities or assets to a liability for tax uncertainties. FIN 48 permits an entity to recognize interest related to tax uncertainties as either income
taxes or interest expense. FIN 48 also permits an entity to recognize penalties related to tax uncertainties as either income tax expense or within other expense classifications. The Company has recognized interest and penalties, if any, related to
tax uncertainties as income tax expense and will continue this treatment upon adoption of FIN 48. The Company will be required to adopt FIN 48 as of January 1, 2007, with any cumulative effect of the change in accounting principles recorded as
an adjustment to opening related earnings. The Company is currently evaluating the impact of its adoption of FIN 48.

In May 2005, the
FASB issued Statement of Financial Accounting Standards No. 154 (SFAS 154), Accounting Changes and Error Corrections, a replacement of APB No. 20 (APB 20), Accounting Changes, and SFAS
No. 3 (SFAS 3), Reporting Accounting Changes in Interim Financial Statements. SFAS 154 applies to all voluntary changes in accounting principle as well as to changes required by an accounting pronouncement that does not
include transition provisions. To enhance comparability, SFAS 154 requires retrospective application to prior periods financial statements of changes in accounting principle, unless it is impracticable to determine either the period-specific
effects or the cumulative effect of the change. The cumulative effect of the change is reported in the carrying value of assets and liabilities as of the first period presented, with the offset applied to opening retained earnings. Each period
presented is adjusted to show the period-specific effects of the change. Only direct effects of the change will be retrospectively recognized; indirect effects will be recognized in the period of change. SFAS 154 carries forward without change APB
20s guidance for reporting the correction of an error and a change in accounting estimate as well as SFAS 3s provisions governing reporting accounting changes in interim financial statements. SFAS 154 is effective for accounting
changes and corrections of errors made in fiscal years beginning after December 15, 2005. The adoption of SFAS 154 did not have a material effect on the Companys consolidated financial statements.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



2. INVESTMENTS

The following is a summary of cash equivalents and short-term investments classified as available-for-sale securities:



|                             |  |                   |         |                 |   |                    |  |   |                     |   |  |   |        
|---------------------------- |  | ----------------- | ------- | --------------- | - | ------------------ |  | - | ------------------- | - |  | - | -------
|                             |  | December 31, 2006
|                             |  | AmortizedCost     |         | UnrealizedGains |   | Unrealized(Losses) |  |   | EstimatedFair Value
|                             |  | (in thousands)   
|U.S. Government agency bonds |  | $                 | 30,648  |                 | $ | 11                 |  | $ | (5                  | ) |  | $ | 30,654 
|U.S. Corporate bonds         |  |                   | 15,632  |                 |   | 9                  |  |   | (11                 | ) |  |   | 15,630 
|Commercial paper             |  |                   | 42,312  |                 |   |                   |  |   |                    |   |  |   | 42,312 
|Money market funds           |  |                   | 9,578   |                 |   |                   |  |   |                    |   |  |   | 9,578  
|Certificates of deposit      |  |                   | 2,319   |                 |   |                   |  |   |                    |   |  |   | 2,319  
|Auction rate securities      |  |                   | 1,500   |                 |   |                   |  |   |                    |   |  |   | 1,500  
|                             |  |                   |         |                 |   |                    |  |   |                     |   |  |   |        
|Total                        |  | $                 | 101,989 |                 | $ | 20                 |  | $ | (16                 | ) |  | $ | 101,993
|                             |  |                   |         |                 |   |                    |  |   |                     |   |  |   |        
|Amounts included in:         |  |                   |         |                 |   |                    |  |   |                     |   |  |   |        
|Cash equivalents             |  | $                 | 52,427  |                 | $ |                   |  | $ |                    |   |  | $ | 52,427 
|Short-term investments       |  |                   | 49,562  |                 |   | 20                 |  |   | (16                 | ) |  |   | 49,566 
|                             |  |                   |         |                 |   |                    |  |   |                     |   |  |   |        
|Total                        |  | $                 | 101,989 |                 | $ | 20                 |  | $ | (16                 | ) |  | $ | 101,993
|                             |  |                   |         |                 |   |                    |  |   |                     |   |  |   |        

As of December 31, 2005, the Company had $116.7 million in money market funds, which was
classified as cash equivalents.

In April 2006, the Company purchased 1,391,836 shares of Series B Preferred Stock of Alta Analog
(Alta) for $1.0 million. Alta is a private company which develops analog memory products. The Company currently owns approximately 10% of equity interest in Alta and accounts the investment under the cost method. The Company has not
identified any events or changes in circumstances that may have had a significant adverse effect on the fair value of the investment. The indicators that the Company uses to identify those events and circumstances include Altas revenue
and earnings trends relative to pre-defined milestones and overall business prospects; the general market conditions in Altas industry or geographic area, including adverse regulatory or economic changes; factors related to Altas ability
to remain in business, such as Altas liquidity and the rate at which Alta is using its cash; and Altas receipt of additional funding at a lower valuation. This investment is included in long-term other assets.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



3. DETAILS OF CERTAIN BALANCE SHEET COMPONENTS



|                                          |  |                |        |   |      |   |        |  
|----------------------------------------- |  | -------------- | ------ | - | ---- | - | ------ | -
|                                          |  | December 31,   |       
|                                          |  | 2006           |        |   | 2005 |  
|                                          |  | (in thousands) |       
|Inventories                               |  |                |        |   |      |   |        |  
|Work in process                           |  | $              | 5,748  |   |      | $ | 3,321  |  
|Finished goods                            |  |                | 2,732  |   |      |   | 3,240  |  
|                                          |  |                |        |   |      |   |        |  
|Total inventories                         |  | $              | 8,480  |   |      | $ | 6,561  |  
|                                          |  |                |        |   |      |   |        |  
|Property and equipment, net               |  |                |        |   |      |   |        |  
|Computers and software                    |  | $              | 4,183  |   |      | $ | 3,082  |  
|Office and test equipment                 |  |                | 3,622  |   |      |   | 2,886  |  
|Leasehold improvements                    |  |                | 589    |   |      |   | 529    |  
|                                          |  |                |        |   |      |   |        |  
|                                          |  |                | 8,394  |   |      |   | 6,497  |  
|Accumulated depreciation and amortization |  |                | (5,582 | ) |      |   | (4,240 | )
|                                          |  |                |        |   |      |   |        |  
|Total property and equipment, net         |  | $              | 2,812  |   |      | $ | 2,257  |  
|                                          |  |                |        |   |      |   |        |  
|Accrued liabilities                       |  |                |        |   |      |   |        |  
|Accrued payroll and benefits              |  | $              | 2,381  |   |      | $ | 3,119  |  
|Deferred revenue                          |  |                | 1,063  |   |      |   | 126    |  
|Accrued legal and accounting services     |  |                | 818    |   |      |   | 436    |  
|Warranty reserve                          |  |                | 204    |   |      |   | 39     |  
|Accrued payables and other                |  |                | 2,248  |   |      |   | 1,018  |  
|                                          |  |                |        |   |      |   |        |  
|Total accrued liabilities                 |  | $              | 6,714  |   |      | $ | 4,738  |  
|                                          |  |                |        |   |      |   |        |  

4. ACQUISITION

On October 31, 2006, the Company acquired AP Semi, a wholly-owned subsidiary of IPCore Technologies Corporation (IPCore). AP Semi is a developer of analog power management integrated circuit products,
whose technology management believes complements the Companys ongoing product design and development activities targeted at portable consumer electronic devices. The Company acquired AP Semi for a total consideration of $22.8 million where
$20.8 million of the purchase consideration was settled in cash and $1.3 million was incurred by the Company in transaction fees, including legal, valuation and accounting fees. The remaining amount of $700,000 is held in escrow and is payable
to the employees contingent upon the employees fulfilling a one year service period from the date of the transfer. This amount is disclosed as restricted cash on the Companys Consolidated Balance Sheet and is being accounted for as a
compensation expense. The purchase consideration of approximately $22.1 million was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed on the basis of their estimated fair values on the acquisition date.

The AP Semi acquisition was accounted for under Statement of Financial Accounting Standards No. 141, Business
Combinations and SFAS 142. The results of operations of AP Semi were included in the Companys Consolidated Statement of Operations from November 1, 2006.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



A third-party firm was engaged to assist the Company in the process of determining the fair values of
AP Semis tangible and intangible assets. The following table summarizes the estimated fair values of the tangible assets acquired and the liabilities assumed at the date of acquisition:



|                          |  |   |        |  
|------------------------- |  | - | ------ | -
|(in thousands)            |  |   |       
|Cash                      |  | $ | 910    |  
|Accounts receivable       |  |   | 564    |  
|Inventory                 |  |   | 904    |  
|Other current assets      |  |   | 138    |  
|Property and equipment    |  |   | 681    |  
|                          |  |   |        |  
|Total assets acquired     |  |   | 3,197  |  
|                          |  |   |        |  
|Accounts payable          |  |   | (1,060 | )
|Accrued liabilities       |  |   | (555   | )
|                          |  |   |        |  
|Total liabilities assumed |  |   | (1,615 | )
|                          |  |   |        |  
|Net assets acquired       |  | $ | 1,582  |  
|                          |  |   |        |  

The intangible assets recognized, apart from goodwill, represented contractual or other legal
rights of AP Semi and those intangible assets of AP Semi that could be clearly identified. These intangible assets were identified and valued through interviews and analysis of data provided by AP Semi concerning development projects, their stage of
development, the time and resources needed to complete them and, if applicable, their expected income generating ability. There were no other contractual or other legal rights of AP Semi clearly identifiable by management, other than those
identified below. The allocation of the purchase price to the tangible and identifiable intangible assets acquired and liabilities assumed was as follows:



|                                           |  |   |       
|------------------------------------------ |  | - | ------
|(in thousands)                             |  |  
|Fair value of net tangible assets acquired |  | $ | 1,582 
|Intangible assets acquired:                |  |   |       
|Core developed technology                  |  |   | 2,900 
|Customer and distributor relationships     |  |   | 580   
|In-process research and development        |  |   | 290   
|Goodwill                                   |  |   | 16,775
|                                           |  |   |       
|Purchase price                             |  | $ | 22,127
|                                           |  |   |       

Core developed technologyCore developed technology of approximately $2.9 million
relates to the AP Semis analog power management IC technology. At the date of acquisition, the developed technology was complete and had reached technological feasibility. Any costs to be incurred in the future will relate to the ongoing
maintenance of the developed technology and will be expensed as incurred. To estimate the fair value of the developed technology, an income approach was used with a discount rate of 25%, which included an analysis of future cash flows and the risks
associated with achieving such cash flows. The discount rate was determined after consideration of the Companys weighted average cost of capital and the weighted average return on assets. The developed technology is being amortized over its
estimated useful life of three years.

Customer and distributor relationshipsCustomer and distributor relationships of
approximately $580,000 represented the fair value of existing customer and distributor relationships. To estimate the fair value of the



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



Customer and distributor relationships, an income approach was used with a discount rate of 26%. The discount rate was determined after consideration of the
Companys weighted average cost of capital and the weighted average return on assets. Customer and distributor relationships are amortized over their estimated useful lives of three years.

In-process research and developmentDevelopment projects that had reached technological feasibility were classified as developed technology,
and the value assigned to developed technology was capitalized. In-process research and development of approximately $290,000 reflected research projects that had not reached technological feasibility or had no alternative future use at the time of
the acquisition and was immediately expensed. In order to achieve technological feasibility, the Company estimated the hours required to complete the projects to cost approximately $578,000. The Company estimated the fair value assigned to
in-process research and development using the income approach, which discounts to present value the cash flows attributable to the technology once it had reached technological feasibility using a discount rate of 27%. The discount rate was
determined after consideration of the Companys weighted average cost of capital and the weighted average return on assets. The stages of completion were determined by estimating the costs and time incurred to date relative to the costs and
time expected to be incurred to develop the in-process technology into a commercially viable technology or product, while considering the relative difficulty of completing the various tasks and overcoming the obstacles necessary to attain
technological feasibility. The nature of the efforts required to develop the acquired in-process research and development into commercially viable products principally relate to the completion of all planning, designing, prototyping, verification
and testing activities that are necessary to establish that the products can be produced to meet their design specifications, including functions, features and technical performance requirements. The weighted average stage of completion for all
projects, in the aggregate, was approximately 85% as of the acquisition date. Upon completion, cash flows from sales of products incorporating those technologies were estimated to commence in fiscal 2007.

Goodwill. Goodwill of approximately $16.8 million represented the excess of the purchase price over the fair value of the net tangible and
intangible assets acquired. The acquisition complements the Companys ongoing product design and development activities targeted at portable consumer electronic devices, such as digital still cameras, personal media players and mobile phones.
The acquisition also creates the ability to extend value to the customers by increasing the Companys presence in key markets in China, Japan and Taiwan and provide local design support. These opportunities, along with the ability to hire the
AP Semis workforce, were significant contributing factors to the establishment of the purchase price, resulting in the recognition of a significant amount of goodwill. In accordance with SFAS 142, the Company is not amortizing goodwill. The
Company will carry the goodwill at cost and test it for impairment annually in the third quarter of each year and whenever events indicate that an impairment may have occurred. The goodwill is deductible for tax purposes.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



The results of operations of AP Semi are included in the Companys Consolidated Statement of
Operations from October 31, 2006, the date of the acquisition. If the Company had acquired AP Semi at the beginning of the periods presented, the Companys unaudited pro forma revenue, net loss and net loss per share would have been as
follows:



|                                                    |  |                                      |        |   |      |   |        |  
|--------------------------------------------------- |  | ------------------------------------ | ------ | - | ---- | - | ------ | -
|                                                    |  | Years Ended December 31,             |       
|                                                    |  | 2006                                 |        |   | 2005 |  
|                                                    |  | (in thousands, exceptper share data) |       
|Revenue                                             |  | $                                    | 83,754 |   |      | $ | 68,847 |  
|Net loss                                            |  |                                      | (5,920 | ) |      |   | (2,261 | )
|Net loss per sharebasic                            |  |                                      | (0.14  | ) |      |   | (0.11  | )
|Net loss per sharediluted                          |  |                                      | (0.14  | ) |      |   | (0.11  | )
|Shares used in computing net loss per sharebasic   |  |                                      | 43,477 |   |      |   | 21,025 |  
|Shares used in computing net loss per sharediluted |  |                                      | 43,477 |   |      |   | 21,025 |  

These results are not necessarily indicative of what the actual results of operations would have
been if the acquisition of AP Semi had in fact occurred on the dates or for the periods indicated, nor do they purport to project the results of operations for any future periods or as of any date. These results do not give effect to any cost
savings, operating synergies, and revenue enhancements which may result from the acquisition of AP Semi or the costs of achieving these cost savings, operating synergies, and revenue enhancements. The in-process research and development charge
of approximately $290,000 is excluded for the years ended December 31, 2006 and 2005.

5. STOCKHOLDERS EQUITY

Initial Public OfferingOn August 8, 2005, the Company completed its initial public offering of 9,000,000 shares of its common stock,
which it sold to the public at a price of $10.00 per share. In addition, the Companys selling stockholders offered 1,600,000 existing shares held by them. On August 15, 2005, the Company sold an additional 1,590,000 shares pursuant to the
underwriters exercise of their over-allotment option.

Convertible Preferred StockAt the time of the Companys
initial public offering, all of the Companys preferred stock series were converted to 24,627,504 shares of the Companys common stock.

WarrantsDuring the year ended December 31, 2003, in connection with the issuance of a convertible promissory note, the Company issued warrants to purchase 41,953 shares of Series E preferred stock at $2.40 per share. The
warrants are fully vested and expired on February 21, 2007. These shares of Series E preferred stock were converted to 41,953 shares of common stock warrants at the time of the Companys initial public offering.

During the year ended December 31, 2003, the Company issued to consultants warrants to purchase 25,500 shares of common stock at $0.46 per share.
The warrants are fully vested and expire on May 8, 2008. The fair value of the warrants was $7,000 based on the Black-Scholes pricing model using the following weighted average assumptions: contractual life of five years, risk-free interest
rate of 2.91%, volatility of 70% and no dividends during the contractual term.

At the time of the Companys initial public offering,
all of the Companys preferred stock warrants were exercised or converted to common stock warrants and a portion of the Companys common stock warrants were exercised. As of December 31, 2006, there were 51,403 shares of common stock
warrants outstanding.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



Stock Option Plan The Companys board of directors and stockholders approved the
Companys 2005 Equity Incentive Plan (the 2005 Plan) in May 2005. The 2005 Plan became effective upon the completion of the Companys initial public offering in August 2005 and provides for the grant of incentive stock options,
within the meaning of Section 422 of the Internal Revenue Code, to its employees and its parent and subsidiary corporations employees, and for the grant of Nonstatutory stock options, restricted stock, stock appreciation rights,
performance units and performance shares to its employees, directors and consultants and its parent and subsidiary corporations employees and consultants. Options generally vest over fours years and expire in 10 years. Shares available for
grant under the 2005 Plan at December 31, 2006 was 2,355,529.

Under the 1998 Stock Plan (the 1998 Plan), 11,139,291
shares of common stock have been authorized for the grant of incentive or nonqualified stock options as of December 31, 2005. Such options generally vest over four years and expire in 10 years. As a result of the approval of the 2005 Plan, no
further grants were made under the 1998 Plan.

The Company uses the Black-Scholes option pricing model to calculate the grant date fair
value of an award. During 2006, the Companys calculations were made using the following weighted average assumptions: volatility 58%; expected life of 4.68 years; risk free interest of 4.63%; and no dividend payments during the term. In 2005,
subsequent to the Companys initial public offering, the Companys calculations were made using the following weighted average assumptions: volatility 60%; expected life of four years; risk free interest rate, ranging from 3.65 to 4.67%;
and no dividend payments during the term. Prior to the Companys initial public offering, the Companys calculations were made using the minimum value option pricing model with following weighted average assumptions: expected life of four
years; risk free interest rate, ranging from 2.83% to 3.26% in 2004; and no dividend payments during the expected term. The Companys calculations are based on a single option valuation approach (resulting in equal amortization per period over
the option term) and forfeitures are recognized as they occur.

For purposes of calculating volatility, the Company used the historical
stock prices of an industry peer group for options granted prior to the Companys IPO on August 8, 2006. For options granted subsequent to January 1, 2006, the Company used its historical stock price after its IPO. The Company changed
its method of estimating expected volatility for options granted in fourth quarter of 2006 from exclusively relying on historical volatility to relying on combination of historical and market-based implied volatility in accordance with guidance in
SFAS 123(R) and SAB 107. The Company determined that a combination of implied volatility and historical volatility is more reflective of market conditions and a better indicator of expected volatility than using purely historical volatility. The
expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding. The Company derived the expected term assumption based on the Company and its peer groups weighted
average vesting period combined with the post-vesting holding period. The risk-free interest rate assumption is based upon observed interest rates appropriate for the expected term of the Companys employee stock options. The dividend yield
assumption is based on the Companys history and expectation of dividend payouts. The Company has never declared or paid any cash dividends on common stock, and it does not anticipate paying any cash dividends in the foreseeable future.

The amount of stock-based compensation expense recognized during a period is based on the value of the portion of the awards that are
ultimately expected to vest. SFAS 123(R) requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The term forfeitures is distinct
from cancellations or expirations and represents only the unvested portion of the surrendered option. The Company applied forfeiture rates of 8.3% to unvested options issued to directors and officers and 9.4% to unvested
options issued to employees excluding directors and officers as of December 31, 2006. The Company will re-evaluate forfeiture rates quarterly and adjust them as necessary.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



The following table summarizes stock-based compensation expense related to employee stock options
under SFAS 123(R), including the amortization of the intrinsic value under APB 25 for pre-April 4, 2005 options for the year ended December 31, 2006, and stock-based compensation expense related to employee stock options under APB 25, for
the years ended 2005 and 2004, which was allocated as follows:



|                                       |  |                |       |   |      |   |       |      |  |   |    
|-------------------------------------- |  | -------------- | ----- | - | ---- | - | ----- | ---- |  | - | ---
|                                       |  | 2006           |       |   | 2005 |   |       | 2004
|                                       |  | (in thousands)
|Cost of sales                          |  | $              | 268   |   |      | $ | 112   |      |  | $ | 42 
|Research and development               |  |                | 2,403 |   |      |   | 784   |      |  |   | 300
|Sales, general and marketing           |  |                | 3,472 |   |      |   | 1,493 |      |  |   | 576
|Related tax effect                     |  |                | (214  | ) |      |   | (13   | )    |  |   |   
|                                       |  |                |       |   |      |   |       |      |  |   |    
|Total stock-based compensation expense |  | $              | 5,929 |   |      | $ | 2,376 |      |  | $ | 918
|                                       |  |                |       |   |      |   |       |      |  |   |    

A summary of the activity under the Companys option plans as of December 31, 2006 and
changes during the year then ended is presented below:



|                                                |  |                                       |   |  |                                           |      |                                                     |     |                           |   |       
|----------------------------------------------- |  | ------------------------------------- | - |  | ----------------------------------------- | ---- | --------------------------------------------------- | --- | ------------------------- | - | ------
|Options                                         |  | Number ofShares                       |   |  | Weighted Average Exercise Price Per Share |      | Weighted Average Remaining Contractual Term inYears |     | Aggregate InstrinsicValue
|                                                |  | (in thousands, except per share data)
|Outstanding at January 1, 2006                  |  | 6,876                                 |   |  | $                                         | 4.84 |                                                     |     |                           |   |       
|Granted                                         |  | 2,375                                 |   |  | $                                         | 7.69 |                                                     |     |                           |   |       
|Exercised                                       |  | (891                                  | ) |  | $                                         | 1.10 |                                                     |     |                           |   |       
|Forfeited or expired                            |  | (954                                  | ) |  | $                                         | 9.23 |                                                     |     |                           |   |       
|                                                |  |                                       |   |  |                                           |      |                                                     |     |                           |   |       
|Outstanding at December 31, 2006                |  | 7,406                                 |   |  | $                                         | 5.64 |                                                     | 6.5 |                           | $ | 15,002
|                                                |  |                                       |   |  |                                           |      |                                                     |     |                           |   |       
|Vested or expected to vest at December 31, 2006 |  | 6,493                                 |   |  | $                                         | 5.44 |                                                     | 6.5 |                           | $ | 13,908
|                                                |  |                                       |   |  |                                           |      |                                                     |     |                           |   |       
|Exercisable at December 31, 2006                |  | 2,399                                 |   |  | $                                         | 3.39 |                                                     | 6.0 |                           | $ | 8,702 
|                                                |  |                                       |   |  |                                           |      |                                                     |     |                           |   |       

The weighted average grant date fair value of options granted during the years 2006, 2005 and 2004
was $7.68, $11.00 and $2.92, respectively.

The total intrinsic value of options exercised (i.e. the difference between the market price at
exercise and the price paid by the employee to exercise the options) during fiscal 2006 was $9.2 million and the total amount of cash received by the Company from exercise of these options was approximately $980,000. Total fair value of options
vested during fiscal 2006 was $5.6 million.

As of December 31, 2006, there was $15.3 million of total unrecognized compensation cost
related to unvested options. That cost is expected to be recognized over a weighted-average period of 2.7 years.

Deferred Stock
CompensationAs discussed in Note 1, the Company accounted for its stock-based awards to employees using the intrinsic value method in accordance with APB 25 before its adoption of SFAS 123(R) in January 1, 2006. The Company recorded
deferred stock compensation equal to the difference between the exercise price and deemed fair value of the Companys common stock on the date of grant. The deferred stock compensation is reduced by forfeitures of unvested common stock options.
Such net deferred stock compensation



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



was $0 million, $0.7 million and $7.7 million in 2006, 2005 and 2004, respectively. The compensation is being amortized to expense over the vesting period of
the options, generally four years, using the straight-line award method. Amortization of deferred stock compensation is presented net of forfeitures of unvested previously amortized stock compensation. Amortization of deferred stock compensation,
net of forfeitures, was $1.9 million, $2.2 million and $0.8 million in 2006, 2005 and 2004, respectively.

During 2006, the Company
accelerated certain unvested portions of stock option awards granted to one of its employees. As a result, the Company recorded approximately $211,000 as compensation expense in 2006. Additionally, the Company recorded approximately $153,000 as
compensation expense due to acceleration of certain unvested portions of the stock options granted to one of its former employees, as compensation for providing consulting services under a transition agreement.

During 2006, the Company issued nonstatutory options to nonemployees for the purchase of 10,000 shares of common stock at weighted average exercise price
of $5.71 per share. Such options were issued for services provided by nonemployees and were fully vested one month later. Accordingly, the Company recorded $24,600 in 2006 as stock-based compensation for the fair values of the awards (using the
Black-Scholes option pricing model with the following weighted average assumptions: expected life 4.05 years from date of grant; stock volatility 58%; risk free interest rate, 4.58%; and no dividends during the term).

During 2005, the Company issued nonstatutory options to nonemployees for the purchase of 32,500 shares of common stock at weighted average exercise price
of $7.45 per share. Such options were issued for services provided by nonemployees and were immediately vested. Accordingly, the Company recorded $243,000 in 2005 as stock-based compensation for the fair values of the awards (using the Black-Scholes
option pricing model with the following weighted average assumptions: expected life 10 years from date of grant; stock volatility 65-70%; risk free interest rate, 4.56% to 4.67%; and no dividends during the term).

During 2005, the Company issued 18,000 shares of common stock to a nonemployee. Accordingly, the Company recorded $24,000 as stock-based compensation.

During 2004, the Company issued nonstatutory options to nonemployees for the purchase of 27,000 shares of common stock at weighted average
exercise price of $0.46 per share. Such options were issued for services provided by nonemployees and were immediately vested. Accordingly, the Company recorded $74,000 in 2004 as stock-based compensation for the fair values of the awards (using the
Black-Scholes option pricing model with the following weighted average assumptions: expected life 10 years from date of grant; stock volatility 70%; risk free interest rate, 4.32% to 4.42%; and no dividends during the term).

Employee Stock Purchase PlanDuring 2005, the Company initiated an Employee Stock Purchase Plan (ESPP), which allowed certain
employees with the opportunity to purchase the Companys Common Stock through payroll deductions. The ESPP qualifies under Section 423 of the Internal Revenue Code. Under the ESPP, the purchase price of the Companys Common Stock is
equal to 85% of the lesser of the fair market value of the Companys Common Stock on the first day of the offering period, or the last day of the offering period. The Companys offering period was from August 8, 2005 to
December 30, 2005. As a result on December 30, 2005, the Company issued 29,119 additional shares through its ESPP. In 2006, the Company did not issue any shares through the ESPP.

Early Exercise of OptionsThe Company received $771,000 from the early exercise of options to purchase 1,716,903 shares of common stock in
2004. The unvested shares are subject to the Companys repurchase right at



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



the original purchase price. The proceeds initially are recorded as an accrued liability from the early exercise of stock options in accordance with SFAS
123(R) and reclassified to stockholders equity as the Companys repurchase right lapses.

6. INCOME TAXES

The components of income tax provision are as follows:



|                               |  |                 |      |   |      |   |       |      |  |   |         |  
|------------------------------ |  | --------------- | ---- | - | ---- | - | ----- | ---- |  | - | ------- | -
|                               |  | At December 31, |     
|                               |  | 2006            |      |   | 2005 |   |       | 2004 | 
|                               |  | (in thousands)  |     
|Current:                       |  |                 |      |   |      |   |       |      |  |   |         |  
|Federal                        |  | $               | 62   |   |      | $ | 51    |      |  | $ | 456     |  
|State                          |  |                 | 21   |   |      |   | 8     |      |  |   | 203     |  
|Foreign                        |  |                 | 697  |   |      |   | 394   |      |  |   | 138     |  
|                               |  |                 |      |   |      |   |       |      |  |   |         |  
|Total current tax              |  |                 | 780  |   |      |   | 453   |      |  |   | 797     |  
|                               |  |                 |      |   |      |   |       |      |  |   |         |  
|Deferred:                      |  |                 |      |   |      |   |       |      |  |   |         |  
|Federal                        |  |                 | (409 | ) |      |   | 3,736 |      |  |   | 2,040   |  
|State                          |  |                 | (219 | ) |      |   | (133  | )    |  |   | (52     | )
|Foreign                        |  |                 | (294 | ) |      |   |      |      |  |   |        |  
|                               |  |                 |      |   |      |   |       |      |  |   |         |  
|Total deferred                 |  |                 | (922 | ) |      |   | 3,603 |      |  |   | 1,988   |  
|                               |  |                 |      |   |      |   |       |      |  |   |         |  
|Valuation allowance            |  |                 |     |   |      |   |      |      |  |   | (11,166 | )
|                               |  |                 |      |   |      |   |       |      |  |   |         |  
|Income tax (benefit) provision |  | $               | (142 | ) |      | $ | 4,056 |      |  | $ | (8,381  | )
|                               |  |                 |      |   |      |   |       |      |  |   |         |  

The foreign and domestic components of income before income tax are as follows:



|                                  |  |                          |        |   |      |   |        |      |  |   |      
|--------------------------------- |  | ------------------------ | ------ | - | ---- | - | ------ | ---- |  | - | -----
|                                  |  | Years Ended December 31,
|                                  |  | 2006                     |        |   | 2005 |   |        | 2004
|                                  |  | (in thousands)          
|United States                     |  | $                        | (8,021 | ) |      | $ | 9,898  |      |  | $ | 6,342
|Foreign                           |  |                          | 5,797  |   |      |   | (3,757 | )    |  |   | 455  
|                                  |  |                          |        |   |      |   |        |      |  |   |      
|Income (loss) before income taxes |  | $                        | (2,224 | ) |      | $ | 6,141  |      |  | $ | 6,797
|                                  |  |                          |        |   |      |   |        |      |  |   |      

Foreign earnings of approximately $4 million were considered to be permanently reinvested in the
Companys foreign operations through 2006.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



The effective tax rate differs from the applicable U.S. statutory federal income tax rate for the
years ended December 31 as follows:



|                                       |  |       |    |  |      |   |  |        |   
|-------------------------------------- |  | ----- | -- |  | ---- | - |  | ------ | --
|                                       |  | 2006  |    |  | 2005 |   |  | 2004   |   
|U.S. statutory federal tax rate        |  | (34.0 | )% |  | 35.0 | % |  | 35.0   | % 
|State taxes, net of federal benefit    |  | (9.4  | )  |  | (2.1 | ) |  | 1.2    |   
|Foreign income at higher (lower) rates |  | 9.3   |    |  | 24.5 |   |  | (0.5   | ) 
|Research and development credits       |  | (22.4 | )  |  | (5.1 | ) |  | (0.2   | ) 
|Deferred stock compensation            |  | 44.2  |    |  | 11.9 |   |  | 4.3    |   
|Noncash interest expense               |  |      |    |  |     |   |  | 0.1    |   
|Other                                  |  | 5.8   |    |  | 1.8  |   |  | 1.1    |   
|Change in valuation allowance          |  |      |    |  |     |   |  | (164.3 | ) 
|                                       |  |       |    |  |      |   |  |        |   
|Effective tax rate                     |  | (6.5  | )% |  | 66.0 | % |  | (123.3 | )%
|                                       |  |       |    |  |      |   |  |        |   

The components of deferred income taxes are as follows:



|                                               |  |                |       |      |   |       |  
|---------------------------------------------- |  | -------------- | ----- | ---- | - | ----- | -
|                                               |  | 2006           |       | 2005 |  
|                                               |  | (in thousands) |      
|Deferred tax assets:                           |  |                |       |      |   |       |  
|Net operating loss carryforwards               |  | $              | 475   |      | $ | 1,512 |  
|Research and business tax credits              |  |                | 4,266 |      |   | 3,342 |  
|Stock compensation                             |  |                | 1,129 |      |   |      |  
|Accruals and reserves not currently deductible |  |                | 952   |      |   | 643   |  
|Other                                          |  |                |      |      |   | 172   |  
|                                               |  |                |       |      |   |       |  
|                                               |  |                | 6,822 |      |   | 5,669 |  
|Deferred tax liabilitydepreciation            |  |                |      |      |   | (77   | )
|                                               |  |                |       |      |   |       |  
|Total                                          |  | $              | 6,822 |      | $ | 5,592 |  
|                                               |  |                |       |      |   |       |  

Based on the available objective evidence (primarily, the Companys recent history of
profits), management concluded as of December 31, 2004 that it is more likely than not that the Companys net deferred tax assets would be realizable. The amount estimated to be realizable was based on the average annual income before
income taxes, excluding amounts not deductible or includable for tax return purposes, computed over the current and two preceding years and projected over the 20 year carry forward period for net operating loss deductions. As a result, the Company
recognized a benefit in the amount of approximately $11.2 million from the release of its valuation allowance during 2004.

At
December 31, 2006, the Company has federal and California net operating loss carry forward of approximately $317,000 and $6.1 million expiring on various dates principally beginning in 2012 and 2007, respectively. The Companys available
research and business tax credit carry forward for federal and state income tax purposes are approximately $2.8 million and $2.2 million, respectively. The federal research credits expire on various dates beginning in 2018. California research tax
credits can be carried forward indefinitely.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



7. COMMITMENTS

Capital Lease ObligationsAs of December 31, 2006, the costs of software and equipment under the capital leases included in property and equipment at December 31, 2006 was approximately $371,000.
Accumulated amortization of leased equipment at December 31, 2006 was approximately $26,000. As of December 31, 2005, the Company had no outstanding capital lease obligations.

Operating Lease ObligationsThe Company leases its primary facility and other offices, under operating leases which expire at various dates
through 2008. Rental expense related to the Companys operating leases totaled $1.4 million, $1.3 million and $919,000 for 2006, 2005 and 2004, respectively.

As of December 31, 2006, future minimum operating lease payments under all noncancelable leases are as follows:



|                                        |  |                |     |   |                 |   |    
|--------------------------------------- |  | -------------- | --- | - | --------------- | - | ---
|                                        |  | CapitalLeases  |     |   | OperatingLeases
|                                        |  | (in thousands)
|2007                                    |  | $              | 163 |   |                 | $ | 932
|2008                                    |  |                | 163 |   |                 |   | 46 
|2009                                    |  |                | 42  |   |                 |   |   
|2010                                    |  |                |    |   |                 |   |   
|2011                                    |  |                |    |   |                 |   |   
|                                        |  |                |     |   |                 |   |    
|Total minimum lease payments            |  |                | 368 |   |                 | $ | 978
|                                        |  |                |     |   |                 |   |    
|Less amount representing interest       |  |                | (40 | ) |                 |   |    
|                                        |  |                |     |   |                 |   |    
|Present value of minimum lease payments |  |                | 328 |   |                 |   |    
|Less current portion                    |  |                | 137 |   |                 |   |    
|                                        |  |                |     |   |                 |   |    
|Long-term capital lease obligations     |  | $              | 191 |   |                 |   |    
|                                        |  |                |     |   |                 |   |    

In January 2007, the Company entered into a sublease for its future principal executive offices
from September 2007 through March 2016, occupying 42,174 square feet in Santa Clara, California. This facility will accommodate the Companys principal engineering, technology, administrative and finance activities.

8. EMPLOYEE BENEFIT PLAN

The Company sponsors a
401(k) tax-deferred savings plan for all employees who meet certain eligibility requirements. Participants may contribute, on a pre-tax basis not to exceed a maximum contribution amount pursuant to Section 401(k) of the Internal Revenue Code.
The Company matches employee contributions annually at 100% of the first 2% of employee contributions and 50% of the second 2% of employee contributions. All matching contributions vest 25% annually over four years. Contributions made by the Company
were $279,000, $194,000 and $227,000 for 2006, 2005 and 2004, respectively.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



9. MAJOR CUSTOMERS

The following table summarizes net revenue and accounts receivable for customers which accounted for 10% or more of gross accounts receivable or net revenue:



|         |  |                     |   |  |                          |   |  |      |   |  |      |   |  |      |  
|-------- |  | ------------------- | - |  | ------------------------ | - |  | ---- | - |  | ---- | - |  | ---- | -
|         |  | Accounts Receivable |   |  | Net Revenue              |  
|         |  | December 31,        |   |  | Years Ended December 31, |  
|Customer |  | 2006                |   |  | 2005                     |   |  | 2006 |   |  | 2005 |   |  | 2004 |  
|A        |  | 24                  | % |  | 32                       | % |  | 28   | % |  | 37   | % |  | 43   | %
|B        |  | 21                  |   |  | 15                       |   |  |     |   |  |     |   |  |     |  
|C        |  |                    |   |  | 13                       |   |  |     |   |  | 11   |   |  |     |  
|D        |  |                    |   |  |                         |   |  | 11   |   |  |     |   |  |     |  

10. SEGMENT INFORMATION

As defined by the requirements of SFAS No. 131, Disclosures About Segments of an Enterprise and Related Information, the Company operates in one reportable segment: the design, development, marketing
and sale of power management semiconductor products and solutions for the communications, computing and consumer portable and personal electronics marketplace. The Companys chief operating decision maker is its chief executive officer. The
following is a summary of revenues by geographic region based on the location to which the product is shipped:



|                                          |  |                          |        |      |   |        |  |   |       
|----------------------------------------- |  | ------------------------ | ------ | ---- | - | ------ |  | - | ------
|                                          |  | Years Ended December 31,
|                                          |  | 2006                     |        | 2005 |   | 2004  
|                                          |  | (in thousands)          
|South Korea                               |  | $                        | 45,783 |      | $ | 39,895 |  | $ | 31,612
|Taiwan                                    |  |                          | 15,967 |      |   | 13,931 |  |   | 8,760 
|China                                     |  |                          | 13,432 |      |   | 10,313 |  |   | 7,614 
|Europe                                    |  |                          | 3,356  |      |   | 1,848  |  |   | 2,188 
|Japan                                     |  |                          | 1,176  |      |   | 1,553  |  |   | 591   
|North America (principally United States) |  |                          | 1,447  |      |   | 758    |  |   | 580   
|                                          |  |                          |        |      |   |        |  |   |       
|Total                                     |  | $                        | 81,161 |      | $ | 68,298 |  | $ | 51,345
|                                          |  |                          |        |      |   |        |  |   |       

The following is a summary of revenue by product type:



|                                        |  |                               |        |                    |      |   |        |      |                    |  |     |        |  |                    |        |  |     |  
|--------------------------------------- |  | ----------------------------- | ------ | ------------------ | ---- | - | ------ | ---- | ------------------ |  | --- | ------ |  | ------------------ | ------ |  | --- | -
|                                        |  | Years Ended December 31,      |       
|                                        |  | 2006                          |        |                    | 2005 |   |        | 2004 |                   
|                                        |  | Amount                        |        | Percent ofRevenues |      |   | Amount |      | Percent ofRevenues |  |     | Amount |  | Percent ofRevenues |       
|                                        |  | (dollar amounts in thousands) |       
|Display and Lighting Solutions          |  | $                             | 45,121 |                    | 56   | % |        | $    | 35,755             |  | 52  | %      |  | $                  | 23,321 |  | 45  | %
|Interface and Power Management          |  |                               | 17,710 |                    | 22   |   |        |      | 18,835             |  | 28  |        |  |                    | 15,281 |  | 30  |  
|Voltage Regulation and DC/DC Conversion |  |                               | 17,571 |                    | 21   |   |        |      | 13,438             |  | 20  |        |  |                    | 12,297 |  | 24  |  
|Battery Management                      |  |                               | 759    |                    | 1    |   |        |      | 270                |  |    |        |  |                    | 446    |  | 1   |  
|                                        |  |                               |        |                    |      |   |        |      |                    |  |     |        |  |                    |        |  |     |  
|Total                                   |  | $                             | 81,161 |                    | 100  | % |        | $    | 68,298             |  | 100 | %      |  | $                  | 51,345 |  | 100 | %
|                                        |  |                               |        |                    |      |   |        |      |                    |  |     |        |  |                    |        |  |     |  



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



The following is a summary of long-lived assets by geographic region:



|               |  |                |        |      |   |      
|-------------- |  | -------------- | ------ | ---- | - | -----
|               |  | December 31,  
|Country        |  | 2006           |        | 2005
|               |  | (in thousands)
|China          |  | $              | 20,347 |      | $ | 167  
|United States  |  |                | 2,975  |      |   | 1,617
|Taiwan         |  |                | 382    |      |   | 396  
|Japan          |  |                | 267    |      |   | 101  
|South Korea    |  |                | 157    |      |   | 197  
|Hong Kong      |  |                | 86     |      |   | 107  
|Macau          |  |                | 26     |      |   | 46   
|Sweden         |  |                | 8      |      |   | 8    
|United Kingdom |  |                | 1      |      |   | 2    
|               |  |                |        |      |   |      
|Total          |  | $              | 24,249 |      | $ | 2,641
|               |  |                |        |      |   |      

11. VALUATION AND QUALIFYING ACCOUNTS

The Company had the following activity in its valuation allowances:



|                              |  |                |      |   |                          |   |        |                            |  |   |                 |   |  |                                     |      |   |  |   |         |  
|----------------------------- |  | -------------- | ---- | - | ------------------------ | - | ------ | -------------------------- |  | - | --------------- | - |  | ----------------------------------- | ---- | - |  | - | ------- | -
|                              |  | BadDebt        |      |   | DistributorStockRotation |   |        | DistributorPriceProtection |  |   | ProductWarranty |   |  | DeferredTax AssetValuationAllowance |     
|                              |  | (in thousands) |     
|BalanceJanuary 1, 2004       |  |                | 10   |   |                          |   | 375    |                            |  |   |                |   |  |                                     | 321  |   |  |   | 11,166  |  
|Charged to costs and expenses |  |                | 121  |   |                          |   | 302    |                            |  |   | 116             |   |  |                                     | 412  |   |  |   | (11,166 | )
|Deductions                    |  |                | (2   | ) |                          |   | (371   | )                          |  |   | (91             | ) |  |                                     | (220 | ) |  |   |        |  
|                              |  |                |      |   |                          |   |        |                            |  |   |                 |   |  |                                     |      |   |  |   |         |  
|BalanceDecember 31, 2004     |  |                | 129  |   |                          |   | 306    |                            |  |   | 25              |   |  |                                     | 513  |   |  |   |        |  
|Charged to costs and expenses |  |                | 298  |   |                          |   | 574    |                            |  |   | 971             |   |  |                                     | 67   |   |  |   |        |  
|Deductions                    |  |                | (121 | ) |                          |   | (643   | )                          |  |   | (562            | ) |  |                                     | (541 | ) |  |   |        |  
|                              |  |                |      |   |                          |   |        |                            |  |   |                 |   |  |                                     |      |   |  |   |         |  
|BalanceDecember 30, 2005     |  | $              | 306  |   |                          |   | 237    |                            |  | $ | 434             |   |  | $                                   | 39   |   |  | $ |        |  
|Charged to costs and expenses |  |                | 6    |   |                          |   | 1,219  |                            |  |   | 4,156           |   |  |                                     | 319  |   |  |   |        |  
|Deductions                    |  |                | (306 | ) |                          |   | (1,261 | )                          |  |   | (3,147          | ) |  |                                     | (154 | ) |  |   |        |  
|                              |  |                |      |   |                          |   |        |                            |  |   |                 |   |  |                                     |      |   |  |   |         |  
|BalanceDecember 30, 2006     |  | $              | 6    |   |                          | $ | 195    |                            |  | $ | 1,443           |   |  | $                                   | 204  |   |  | $ |        |  
|                              |  |                |      |   |                          |   |        |                            |  |   |                 |   |  |                                     |      |   |  |   |         |  

12. LITIGATION

In May 2003, the Company received a letter from Linear Technology Corporation alleging that certain of its charge pump products infringed United States Patent No. 6,411,531 owned by Linear Technology. In August
2004, the Company received a letter from Linear Technology alleging that certain of its switching regulator products infringed United States Patent Nos. 5,481,178, 6,304,066 and 6,580,258. In response to these letters, the Company contacted Linear
Technology to convey its good faith belief that it does not infringe the patents in question. Subsequently, the Company became aware of a marketing campaign conducted by Linear Technology in which they sought to disrupt the Companys business
relationships and sales by suggesting to the Companys



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



customers that the Companys products infringe the same U.S. patents mentioned in their two letters to the Company. As a result, in February 2006, the
Company initiated a lawsuit against Linear Technology for unfair business practices, interference with existing and prospective customers and trade libel, as well as a declaration of patent invalidity and non-infringement. This case is currently
stayed pending the outcome of the United States International Trade Commission (USITC) investigation described in the following paragraph.

In March 2006, the USITC responded to a petition filed by Linear Technology by initiating an investigation to determine if certain of the Companys products infringe certain patents owned by Linear Technology
pursuant to Section 337 of the Tariff Act. The patents involved in this action are a subset of the patents involved in the lawsuit that the Company filed against Linear Technology. The accused products include charge pumps and switching
regulators and are similar to the products involved in the Companys lawsuit with Linear Technology. The Company believes that none of its products infringe the Linear Technology patents in question. However, whether or not the Company prevails
in this investigation, the Company expects to incur significant legal expenses. If the Company is unsuccessful in this case, its business and its ability to compete in foreign markets could be harmed, and the Company and its customers could be
enjoined from importing the accused products into the United States, which could have a material adverse impact on the Companys revenues, financial condition, results of operations and cash flows.

In July 2006, the Company settled its on-going patent litigation initiated by Siliconix against the Company concerning several United States Patents
owned by Siliconix. Under the terms of the settlement, the Company and Siliconix agreed to dismiss all claims and counterclaims in the litigation. Both the Company and Siliconix will continue marketing their respective trench DMOS product lines. The
settlement had no material impact on the Companys financial statements.

13. SUBSEQUENT EVENT

On December 15, 2006, the Company offered a stock option exchange program (the Exchange Offer) to its employees, other than its executive
officers under Section 16 of the Securities Exchange Act of 1934, giving them the right to tender outstanding stock options that were granted between August 4, 2005 and September 1, 2006, in exchange for new options to be issued on
the day of the close of the Exchange Offer. On January 17, 2007, the expiration date of the Companys Exchange Offer, the Company accepted for exchange from eligible employees, options to purchase an aggregate of approximately
1.3 million shares of the Companys common stock. These stock options were cancelled as of that date. The Company issued new options to purchase an equal number of shares of the Companys common stock with an exercise price at fair
market value of $5.80 in exchange for the options cancelled in connection with the offer. These new options vest at the rate of 25% after one year and 6.25% every three months thereafter from the date of grant. The Company is expected to incur
additional stock compensation expense of approximately $1.5 million from 2007 to 2010 related to the Exchange Offer.



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ADVANCED ANALOGIC TECHNOLOGIES INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



14. QUARTERLY FINANCIAL DATA (UNAUDITED)



|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|----------------------------------------------------------------------- |  | ------------------------------------- | ------ | - | ------------ | - | ------ | ------------- |  | - | ------------ | - |  | - | ------ | -
|                                                                        |  | Three Months Ended                    |       
|                                                                        |  | Mar. 31,2006                          |        |   | Jun. 30,2006 |   |        | Sept. 30,2006 |  |   | Dec. 31,2006 |  
|                                                                        |  | (in thousands, except per share data) |       
|Net sales                                                               |  | $                                     | 18,289 |   |              | $ | 21,818 |               |  | $ | 20,103       |   |  | $ | 20,951 |  
|Cost of revenues (including stock-based compensation)*                  |  |                                       | 7,134  |   |              |   | 8,752  |               |  |   | 9,100        |   |  |   | 9,570  |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Gross profit                                                            |  |                                       | 11,155 |   |              |   | 13,066 |               |  |   | 11,003       |   |  |   | 11,381 |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Operating expenses:                                                     |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Research and development (including stock-based compensation)*          |  |                                       | 6,055  |   |              |   | 5,788  |               |  |   | 5,371        |   |  |   | 6,558  |  
|Sales, general and administrative (including stock-based compensation)* |  |                                       | 5,173  |   |              |   | 5,839  |               |  |   | 5,187        |   |  |   | 6,073  |  
|Patent litigation                                                       |  |                                       | 383    |   |              |   | 1,375  |               |  |   | 3,490        |   |  |   | 3,288  |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Total operating expenses                                                |  |                                       | 11,611 |   |              |   | 13,002 |               |  |   | 14,048       |   |  |   | 15,919 |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Income (loss) from operations                                           |  |                                       | (456   | ) |              |   | 64     |               |  |   | (3,045       | ) |  |   | (4,538 | )
|Interest and investment income (expense):                               |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Interest and investment income                                          |  |                                       | 1,252  |   |              |   | 1,435  |               |  |   | 1,665        |   |  |   | 1,536  |  
|Interest and other expense                                              |  |                                       | (4     | ) |              |   | (29    | )             |  |   | (71          | ) |  |   | (33    | )
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Total interest and investment income, net                               |  |                                       | 1,248  |   |              |   | 1,406  |               |  |   | 1,594        |   |  |   | 1,503  |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Income (loss) before income taxes                                       |  |                                       | 792    |   |              |   | 1,470  |               |  |   | (1,451       | ) |  |   | (3,035 | )
|Provision for (benefit from) income taxes                               |  |                                       | 46     |   |              |   | 266    |               |  |   |             |   |  |   | (454   | )
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Net income (loss)                                                       |  | $                                     | 746    |   |              | $ | 1,204  |               |  | $ | (1,451       | ) |  | $ | (2,581 | )
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Basic net income (loss) per common share                                |  | $                                     | 0.02   |   |              | $ | 0.03   |               |  | $ | (0.03        | ) |  | $ | (0.06  | )
|Diluted net income (loss) per common share                              |  | $                                     | 0.02   |   |              | $ | 0.03   |               |  | $ | (0.03        | ) |  | $ | (0.06  | )
|Shares used in basic net income (loss) per common share                 |  |                                       | 42,994 |   |              |   | 43,364 |               |  |   | 43,624       |   |  |   | 43,915 |  
|Shares used in diluted net income (loss) per common share               |  |                                       | 46,927 |   |              |   | 46,818 |               |  |   | 43,624       |   |  |   | 43,915 |  
|* Pre-tax Stock-based Compensation Included in:                         |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Cost of revenues                                                        |  | $                                     | 87     |   |              | $ | 59     |               |  | $ | 46           |   |  | $ | 76     |  
|Research and development                                                |  |                                       | 557    |   |              |   | 624    |               |  |   | 618          |   |  |   | 604    |  
|Sales, general and administrative                                       |  |                                       | 762    |   |              |   | 803    |               |  |   | 825          |   |  |   | 1,082  |  



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)

Years Ended December 31, 2006, 2005 and 2004



|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|----------------------------------------------------------------------- |  | ------------------------------------- | ------ | - | ------------ | - | ------ | ------------- |  | - | ------------ | - |  | - | ------ | -
|                                                                        |  | Three Months Ended                    |       
|                                                                        |  | Mar. 31,2005                          |        |   | Jun. 30,2005 |   |        | Sept. 30,2005 |  |   | Dec. 31,2005 |  
|                                                                        |  | (in thousands, except per share data) |       
|Net sales                                                               |  | $                                     | 14,272 |   |              | $ | 14,475 |               |  | $ | 17,964       |   |  | $ | 21,587 |  
|Cost of revenues (including stock-based compensation)*                  |  |                                       | 5,395  |   |              |   | 6,257  |               |  |   | 7,152        |   |  |   | 8,160  |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Gross profit                                                            |  |                                       | 8,877  |   |              |   | 8,218  |               |  |   | 10,812       |   |  |   | 13,427 |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Operating expenses:                                                     |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Research and development (including stock-based compensation)*          |  |                                       | 4,448  |   |              |   | 4,485  |               |  |   | 5,277        |   |  |   | 5,269  |  
|Sales, general and administrative (including stock-based compensation)* |  |                                       | 4,040  |   |              |   | 3,803  |               |  |   | 4,906        |   |  |   | 4,875  |  
|Patent litigation                                                       |  |                                       | 5      |   |              |   |       |               |  |   | 8            |   |  |   | 14     |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Total operating expenses                                                |  |                                       | 8,493  |   |              |   | 8,288  |               |  |   | 10,191       |   |  |   | 10,158 |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Income (loss) from operations                                           |  |                                       | 384    |   |              |   | (70    | )             |  |   | 621          |   |  |   | 3,269  |  
|Interest and investment income (expense):                               |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Interest and investment income                                          |  |                                       | 108    |   |              |   | 132    |               |  |   | 680          |   |  |   | 1,138  |  
|Interest and other expense                                              |  |                                       | (14    | ) |              |   | (6     | )             |  |   | (30          | ) |  |   | (71    | )
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Total interest and investment income, net                               |  |                                       | 94     |   |              |   | 126    |               |  |   | 650          |   |  |   | 1,067  |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Income before income taxes                                              |  |                                       | 478    |   |              |   | 56     |               |  |   | 1,271        |   |  |   | 4,336  |  
|Provision for income taxes                                              |  |                                       | 239    |   |              |   | 194    |               |  |   | 1,029        |   |  |   | 2,594  |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Net income (loss)                                                       |  | $                                     | 239    |   |              | $ | (138   | )             |  | $ | 242          |   |  | $ | 1,742  |  
|                                                                        |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Basic net income (loss) per common share                                |  | $                                     | 0.04   |   |              | $ | (0.02  | )             |  | $ | 0.01         |   |  | $ | 0.04   |  
|Diluted net income (loss) per common share                              |  | $                                     | 0.01   |   |              | $ | (0.02  | )             |  | $ | 0.01         |   |  | $ | 0.04   |  
|Shares used in basic net income (loss) per common share                 |  |                                       | 6,368  |   |              |   | 6,668  |               |  |   | 27,683       |   |  |   | 42,699 |  
|Shares used in diluted net income (loss) per common share               |  |                                       | 35,594 |   |              |   | 6,668  |               |  |   | 42,242       |   |  |   | 46,883 |  
|* Pre-tax Stock-based Compensation Included in:                         |  |                                       |        |   |              |   |        |               |  |   |              |   |  |   |        |  
|Cost of revenues                                                        |  | $                                     | 25     |   |              | $ | 33     |               |  | $ | 28           |   |  | $ | 26     |  
|Research and development                                                |  |                                       | 187    |   |              |   | 205    |               |  |   | 196          |   |  |   | 196    |  
|Sales, general and administrative                                       |  |                                       | 372    |   |              |   | 360    |               |  |   | 352          |   |  |   | 409    |  



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|ITEM 9. | CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
|------- | ------------------------------------------------------------------------------------

None



|ITEM 9A. | CONTROLS AND PROCEDURES
|-------- | -----------------------

(a) Evaluation of Disclosure Controls
and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the
effectiveness of our disclosure controls and procedures as of December 31, 2006. The term disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other
procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods
specified in the SECs rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits
under the Exchange Act is accumulated and communicated to the companys management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Management
recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of
possible controls and procedures. Based on the evaluation of our disclosure controls and procedures as of December 31, 2006, our Chief Executive Officer and Chief Financial Officer concluded that, as of such date, our disclosure controls and
procedures were effective at the reasonable assurance level.

(b) Managements Report on Internal Control Over Financial Reporting

Managements Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting to provide reasonable assurance
regarding the reliability of our financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. Internal control over financial reporting includes those
policies and procedures that (i) pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that
transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with
authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the companys assets that could have a material
effect on the financial statements.

Management assessed our internal control over financial reporting as of December 31, 2006, the
end of our fiscal year. Such assessment excluded the internal controls over financial reporting related to our acquisition of Analog Power Semiconductor Corporation (AP Semi). Since we completed the acquisition of AP Semi on October 31,
2006, it was not possible to conduct a complete assessment of AP Semis internal control over financial reporting in the period between the completion of the acquisition and the date of our managements assessment of our internal controls
over financial reporting. Therefore, our conclusion in the Annual Report on Form 10-K regarding the effectiveness of our internal control over financial reporting as of December 31, 2006 does not include the internal controls over financial
reporting of AP Semi. Our fiscal 2006 consolidated financial statements include the operating results of AP Semi for two months. During this period, these operations generated approximately 1% of total revenues. Additionally, AP Semis net and
total assets as of December 31, 2006 were approximately 16% and 15% of consolidated net and total assets, respectively.



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Management based its assessment on criteria established in Internal ControlIntegrated
Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Managements assessment included evaluation of elements such as the design and operating effectiveness of key financial reporting controls, process
documentation, accounting policies, and our overall control environment.

Based on our assessment, management has concluded that our
internal control over financial reporting excluding internal controls over financial reporting with respect to AP Semi, was effective as of the end of the fiscal year to provide reasonable assurance regarding the reliability of financial reporting
and the preparation of financial statements for external reporting purposes in accordance with U.S. generally accepted accounting principles. We reviewed the results of managements assessment with the Audit Committee of our Board of Directors.
In addition, on a quarterly basis we evaluate any changes to our internal control over financial reporting to determine if material changes occurred.

Our independent auditors have issued an audit report on our assessment of our internal control over financial reporting. This report appears below.



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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of

Advanced Analogic Technologies, Inc.

Sunnyvale, California

We have audited managements assessment, included in the accompanying
Managements Report on Internal Control Over Financial Reporting, that Advanced Analogic Technologies, Inc. and its subsidiaries (the Company) maintained effective internal control over financial reporting as of December 31, 2006,
based on the criteria established in Internal ControlIntegrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission. As described in the Managements Report on Internal Control Over Financial
Reporting, management excluded from its assessment the internal control over financial reporting at Analog Power Semiconductor Corporation (AP Semi), which was acquired on October 31, 2006 and whose financial statements constitute 16
percent and 15 percent of net and total assets, respectively, and 1 percent of revenues of the consolidated financial statement amounts as of and for the year ended December 31, 2006. Accordingly, our audit did not include the internal control over
financial reporting at AP Semi. The Companys management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting. Our
responsibility is to express an opinion on managements assessment and an opinion on the effectiveness of the Companys internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we
plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial
reporting, evaluating managements assessment, testing and evaluating the design and operating effectiveness of internal control, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit
provides a reasonable basis for our opinions.

A companys internal control over financial reporting is a process designed by, or
under the supervision of, the companys principal executive and principal financial officers, or persons performing similar functions, and effected by the companys board of directors, management, and other personnel to provide reasonable
assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A companys internal control over financial reporting
includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that
transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles and that receipts and expenditures of the company are being made only in accordance with authorizations
of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the companys assets that could have a material effect on the
financial statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of
collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial
reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, managements assessment that the Company maintained effective internal control over financial reporting as of December 31, 2006, is
fairly stated, in all material respects, based on the criteria established in Internal ControlIntegrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission. Also, in our opinion, the Company
maintained, in all material respects, effective



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internal control over financial reporting as of December 31, 2006, based on the criteria established in Internal ControlIntegrated Framework
issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of
the Public Company Accounting Oversight Board (United States), the consolidated financial statements as of and for the year ended December 31, 2006 of the Company and our report dated March 7, 2007 expressed an unqualified opinion on those financial
statements and included an explanatory paragraph regarding the adoption of Statement of Financial Accounting Standards No. 123(R), Share Based Payment.

/s/    DELOITTE & TOUCHE LLP

San Jose, California

March 7, 2007

(c) Changes in Internal Controls Over Financial Reporting

There have been no changes in our internal controls over financial reporting that occurred in the fourth quarter of the period covered by this Annual
Report of Form 10-K that have materially affected, or are reasonably likely to materially affect, our internal controls over financial reporting.



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PART III



|ITEM 10. | DIRECTORS, EXECUTIVE OFFICERS OF THE REGISTRANT AND CORPORATE GOVERNANCE MATTERS
|-------- | --------------------------------------------------------------------------------

Executive Officers

The information required by this item with respect to our executive officers is
set forth under the caption Executive Officers in Item 1 of this Report and is incorporated herein by reference.

Directors

The information required by this item with respect to our board of directors and committees thereof is set forth in our 2007 Proxy
Statement under the caption Election of Directors and is incorporated herein by reference.

Section 16(a) Beneficial Ownership
Reporting Compliance

The information required by this item with respect to Section 16(a) beneficial ownership reporting compliance
is set forth in our 2007 Proxy Statement under the caption Section 16(a) Beneficial Ownership Reporting Compliance and is incorporated herein by reference.

Code of Business Conduct and Ethics

The information required by this item with respect to our Code
of Business Conduct and Ethics is set forth in our 2007 Proxy Statement under the caption Code of Business Conduct and Ethics and is incorporated herein by reference.



|ITEM 11. | EXECUTIVE COMPENSATION
|-------- | ----------------------

The information required by
this item is set forth under the caption Executive Compensation and Other Matters in our 2007 Proxy Statement and is incorporated herein by reference.



|ITEM 12. | SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
|-------- | ----------------------------------------------------------------------------------------------

The information required by this item with respect to equity compensation plans is set forth under the caption Equity Compensation Plan
Information in our 2007 Proxy Statement and with respect to security ownership of certain beneficial owners, directors and executive officers is set forth under the caption Security Ownership of Certain Beneficial Owners and
Management in our 2007 Proxy Statement and is incorporated herein by reference.



|ITEM 13. | CERTAIN RELATIONSHIPS, RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE
|-------- | ---------------------------------------------------------------------

The information required by this item is set forth under the captions Compensation Committee Interlocks and Insider Participation and Certain Relationships, Related Party Transactions and Director
Independence in our 2007 Proxy Statement and is incorporated herein by reference.



|ITEM 14. | PRINCIPAL ACCOUNTING FEES AND SERVICES
|-------- | --------------------------------------

The
information required by this item is set forth under the caption Principal Accounting Fees and Services in our 2007 Proxy Statement and is incorporated herein by reference.



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PART IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a) Documents filed as part of this report

(1) Financial Statements

The following financial statements and related report are included in Item 8 of this Report:

    Report of Independent Registered Public Accounting Firm

    Consolidated Balance Sheets

    Consolidated Statements of Operations

    Consolidated Statements of Stockholders Equity and Comprehensive Income

    Consolidated Statements of Cash Flows

    Notes to Consolidated Financial Statements

(2) Schedules

See Note 11 to Consolidated Financial Statements included in Item 8 of this Report.

(3) Exhibits

The exhibits listed on the accompanying index to exhibits in Item 15(b) below are filed as part of, or hereby
incorporated by reference into, this Report.

(b) Exhibits



|              |  |                                                                                                                     
|------------- |  | --------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Description                                                                                                         
|2.1         |  | Amended and Restated Share and Asset Purchase Agreement                                                             
|              | 
|*3.1          |  | Amended and Restated Certificate of Incorporation of the Registrant                                                 
|              | 
|**3.2         |  | Amended and Restated Bylaws of the Registrant                                                                       
|              | 
|#4.1          |  | Form of the Registrants Common Stock Certificate                                                                   
|              | 
|#10.1         |  | Form of Director and Executive Officer Indemnification Agreement                                                    
|              | 
|#10.2         |  | 1998 Stock Plan and forms of agreement thereunder                                                                   
|              | 
|#10.3         |  | 2005 Equity Incentive Plan and form of agreement thereunder                                                         
|              | 
|#10.4         |  | 2005 Employee Stock Purchase Plan and form of agreement thereunder                                                  
|              | 
|#10.5         |  | Employment Offer Letter between the Registrant and Richard K. Williams dated September 24, 1998                     
|              | 
|#10.6         |  | Employment Offer Letter between the Registrant and Brian R. McDonald dated June 21, 2004                            
|              | 
|#10.7         |  | Office Lease between the Registrant and Wolfe Road Investments No. 3, a partnership, dated August 4, 2004           
|              | 
|#10.8         |  | Amended and Restated Loan and Security Agreement between the Registrant and Silicon Valley Bank, dated July 15, 2005
|              | 
|#10.9        |  | Joint Development Agreement between the Registrant and GEM Services, Inc. dated June 1, 1999                        
|              | 
|#10.10        |  | Form of Warrant to Purchase Shares of Series E Preferred Stock                                                      
|              | 
|#10.11        |  | Form of Warrant to Purchase Shares of Common Stock                                                                  
|              | 
|#10.12       |  | Wafer Foundry Agreement, as amended, between the Registrant and HYNIX Semiconductor America dated June 4, 2002      



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|              |  |                                                                                                                                                                                  
|------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Description                                                                                                                                                                      
|              | 
|#10.12.1      |  | Amendment dated effective May 1, 2005 to Wafer Foundry Agreement between the Registrant and HYNIX Semiconductor America dated June 4, 2002                                       
|              | 
|#10.13        |  | Amended and Restated Investors Rights Agreement dated October 27, 2003                                                                                                          
|              | 
|#10.13.1      |  | Amendment to Amended and Restated Investors Rights Agreement dated as of May 18, 2005                                                                                           
|              | 
|#10.14        |  | Amended and Restated Voting Agreement dated October 27, 2003                                                                                                                     
|              | 
|#10.15        |  | Form of Change of Control Agreement (Chief Executive Officer and Chief Financial Officer)                                                                                        
|              | 
|#10.16        |  | Form of Change of Control Agreement (Vice Presidents)                                                                                                                            
|              | 
|21.1          |  | Subsidiaries of the Registrant                                                                                                                                                   
|              | 
|23.1          |  | Consent of Deloitte & Touche LLP, independent registered public accounting firm                                                                                                  
|              | 
|24.1          |  | Power of Attorney (See signature page)                                                                                                                                           
|              | 
|31.1          |  | Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of
2002.
|              | 
|31.2          |  | Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of
2002.
|              | 
|***32.1       |  | Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.   

---

|# | Incorporated by reference to the same number exhibit filed with the Registrants Registration Statement on Form S-1 (Registration No. 333-123798), declared effective by the
Securities and Exchange Commission on August 3, 2005.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|* | Incorporated by reference to Exhibit 3.2 of the Registrants Form S-1 Registration Statement (Registration No. 333-123798), declared effective by the Securities and Exchange
Commission on August 3, 2005.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|** | Incorporated by reference to Exhibit 3.4 of the Registrants Form S-1 Registration Statement (Registration No. 333-123798), declared effective by the Securities and Exchange
Commission on August 3, 2005.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Incorporated by reference to Exhibit 2.1 of the Registrants Current Report on Form 8-K filed on November 3, 2006.
|-- | ------------------------------------------------------------------------------------------------------------------

|*** | This exhibit shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that Section, nor
shall it be deemed incorporated by reference in any filings under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date hereof and irrespective of any general incorporation language in any filings.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Confidential treatment has been granted for portions of this exhibit.
|- | ---------------------------------------------------------------------



85



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##### Table of Contents

SIGNATURES

Pursuant to the requirements of the Section 13 or 15(d) of the Securities Exchange Act of
1934, Advanced Analogic Technologies Incorporated has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in Sunnyvale, California on the 7th day of March, 2007.



ADVANCED ANALOGIC TECHNOLOGIES INCORPORATEDBy:

/S/    BRIAN R.
MCDONALDBrian R. McDonald Chief Financial Officer, Vice President of Worldwide Finance and Secretary


POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Richard K. Williams and Brian R. McDonald,
his or her true and lawful attorneys-in-fact, each with full power of substitution, for him or her in any and all capacities, to sign any amendments to this report on Form 10-K and to file the same, with exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming that each of said attorneys-in-fact or their substitute or substitutes may do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of Advanced
Analogic Technologies Incorporated and in the capacities and on the dates indicated.



|                                               |  |                                                                                                          |  |              
|---------------------------------------------- |  | -------------------------------------------------------------------------------------------------------- |  | -------------
|Signature                                      |  | Title                                                                                                    |  | Date         
|                                               |  |                                                                                                         
|/S/    RICHARD K.
WILLIAMS Richard K. Williams |  | President, Chief Executive Officer, Chief Technical Officer and Director (Principal Executive Officer)   |  | March 7, 2007
|                                               |  |                                                                                                         
|/S/    BRIAN R.
MCDONALD Brian R. McDonald     |  | Chief Financial Officer, Vice President of Worldwide Finance and Secretary (Principal Financial Officer) |  | March 7, 2007
|                                               |  |                                                                                                         
|/S/    ASHOK
CHANDRAN Ashok Chandran           |  | Corporate Controller (Principal Accounting Officer)                                                      |  | March 7, 2007
|                                               |  |                                                                                                         
|/S/    SAMUEL J.
ANDERSON Samuel J. Anderson   |  | Director                                                                                                 |  | March 7, 2007
|                                               |  |                                                                                                         
|/S/    KENNETH P.
LAWLER Kenneth P. Lawler     |  | Director                                                                                                 |  | March 7, 2007
|                                               |  |                                                                                                         
|/S/    JAFF
LIN Jaff Lin                       |  | Director                                                                                                 |  | March 7, 2007
|                                               |  |                                                                                                         
|/S/    THOMAS
WEATHERFORD Thomas Weatherford   |  | Director                                                                                                 |  | March 7, 2007



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EXHIBIT INDEX



|               |  |                                                                                                                                                                                  
|-------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit Number |  | Description                                                                                                                                                                      
|2.1          |  | Amended and Restated Share and Asset Purchase Agreement                                                                                                                          
|               | 
|*3.1           |  | Amended and Restated Certificate of Incorporation of the Registrant                                                                                                              
|               | 
|**3.2          |  | Amended and Restated Bylaws of the Registrant                                                                                                                                    
|               | 
|#4.1           |  | Form of the Registrants Common Stock Certificate                                                                                                                                
|               | 
|#10.1          |  | Form of Director and Executive Officer Indemnification Agreement                                                                                                                 
|               | 
|#10.2          |  | 1998 Stock Plan and forms of agreement thereunder                                                                                                                                
|               | 
|#10.3          |  | 2005 Equity Incentive Plan and form of agreement thereunder                                                                                                                      
|               | 
|#10.4          |  | 2005 Employee Stock Purchase Plan and form of agreement thereunder                                                                                                               
|               | 
|#10.5          |  | Employment Offer Letter between the Registrant and Richard K. Williams dated September 24, 1998                                                                                  
|               | 
|#10.6          |  | Employment Offer Letter between the Registrant and Brian R. McDonald dated June 21, 2004                                                                                         
|               | 
|#10.7          |  | Office Lease between the Registrant and Wolfe Road Investments No. 3, a partnership, dated August 4, 2004                                                                        
|               | 
|#10.8          |  | Amended and Restated Loan and Security Agreement between the Registrant and Silicon Valley Bank, dated July 15, 2005                                                             
|               | 
|#10.9         |  | Joint Development Agreement between the Registrant and GEM Services, Inc. dated June 1, 1999                                                                                     
|               | 
|#10.10         |  | Form of Warrant to Purchase Shares of Series E Preferred Stock                                                                                                                   
|               | 
|#10.11         |  | Form of Warrant to Purchase Shares of Common Stock                                                                                                                               
|               | 
|#10.12        |  | Wafer Foundry Agreement, as amended, between the Registrant and HYNIX Semiconductor America dated June 4, 2002                                                                   
|               | 
|#10.12.1       |  | Amendment dated effective May 1, 2005 to Wafer Foundry Agreement between the Registrant and HYNIX Semiconductor America dated June 4, 2002                                       
|               | 
|#10.13         |  | Amended and Restated Investors Rights Agreement dated October 27, 2003                                                                                                          
|               | 
|#10.13.1       |  | Amendment to Amended and Restated Investors Rights Agreement dated as of May 18, 2005                                                                                           
|               | 
|#10.14         |  | Amended and Restated Voting Agreement dated October 27, 2003                                                                                                                     
|               | 
|#10.15         |  | Form of Change of Control Agreement (Chief Executive Officer and Chief Financial Officer)                                                                                        
|               | 
|#10.16         |  | Form of Change of Control Agreement (Vice Presidents)                                                                                                                            
|               | 
|21.1           |  | Subsidiaries of the Registrant                                                                                                                                                   
|               | 
|23.1           |  | Consent of Deloitte & Touche LLP, independent registered public accounting firm                                                                                                  
|               | 
|24.1           |  | Power of Attorney (See signature page)                                                                                                                                           
|               | 
|31.1           |  | Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of
2002.
|               | 
|31.2           |  | Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of
2002.
|               | 
|***32.1        |  | Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.   



---

##### Table of Contents

---

|# | Incorporated by reference to the same number exhibit filed with the Registrants Registration Statement on Form S-1 (Registration No. 333-123798), declared effective by the
Securities and Exchange Commission on August 3, 2005.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|* | Incorporated by reference to Exhibit 3.2 of the Registrants Form S-1 Registration Statement (Registration No. 333-123798), declared effective by the Securities and Exchange
Commission on August 3, 2005.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|** | Incorporated by reference to Exhibit 3.4 of the Registrants Form S-1 Registration Statement (Registration No. 333-123798), declared effective by the Securities and Exchange
Commission on August 3, 2005.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Incorporated by reference to Exhibit 2.1 of the Registrants Current Report on Form 8-K filed on November 3, 2006.
|-- | ------------------------------------------------------------------------------------------------------------------

|*** | This exhibit shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that Section, nor
shall it be deemed incorporated by reference in any filings under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date hereof and irrespective of any general incorporation language in any filings.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Confidential treatment has been granted for portions of this exhibit.
|- | ---------------------------------------------------------------------