Mobile Communications
Product Guide
Part
NumberDescription

Package(s) Available(Lead-free)

Page
No.

LED Backlight Controller ICs for Small-Size LCD Panels

OZ521

Boost Converter Controller

8 E-SOP, SOP

6

OZ535

Compact LED Driver

6 DFN

7

OZ536

High Precision LED Driver

16 QFN

8

OZ9956B

Six String LED Controller

20 QFN9

OZ9956E

Six String LED Driver Controller

20 QFN10

OZ9960High Power LED Controller

12 QFN, 16 SSOP

11

OZ9979Six String LED Controller with
Phase-Shift Dimming Internal
MOSFET

20 QFN

12

OZ9993

Low Cost White LED Controller

6 SOT-23

13

LED Backlight Controller ICs for AUTOMOTIVE/CAR TV/GPS/PND Applications

2

OZ523

Step Down DC/DC Converter

8 SOP

14

OZ524

Step Down 3A DC/DC Converter

8 E-SOP15

OZ526

White LED Controller

12 DFN

16

OZ527

Automotive GPS LED Controller

24 E-TSSOP, QFN

17

OZ528

LCD Bias Supply Controller

28 E-TSSOP, QFN,
SOP

18

OZ9960High Power LED Controller

12 DFN, 16 SSOP

11

OZ9961Six String LED Controller

20 E-TSSOP, SSOP

19

OZ9965

LED Controller + 2 – DC/DC

28 E-TSSOP20

OZ9990

Four String High Power Buck/Boost
LED Driver

24 E-TSSOP21

OZ9993

Low Cost White LED Controller

6 SOT-23

13

OZ9998A

Eight String High Power LED
Controller

24 E-TSSOP, QFN,
SOP

22

Mobile Communications
Product Guide
Part
NumberDescription

Package(s)Available(Lead-free)

Page
No.

Power Management ICs
OZ522

Charger + DC/DC PMU

20 SSOP

23

OZ8071

USB Protection IC and Battery Charger

20 QFN24

OZ8555

Battery Charger/Boost Controller

28 QFN25

OZ8556

Battery Charger/Boost Controller

28 QFN26

OZ8618Battery Charge Controller with Power
Selector

24 QFN27

OZ8660Single Battery Charger Controller

40 VQFN28

OZ8681

SMBus Level 2 Battery Charger

16 QFN29

OZ8682SMBus Level 2 Battery Charger with Hybrid
Power Boost

16 QFN30

OZ8690

SMBus Level 2 Battery Charger with Hybrid
Power Boost

40 VQFN

31

OZ8806

Battery Monitor + High Accuracy Coulomb
Counter

10 DFN

32

DC/DC Converter Controllers

3

OZ8002

Dual Channel MOSFET Driver

16 QFN33

OZ8013

3A Synchronous DC/DC Regulator

16 QFN34

OZ8033

3A Low Dropout Linear Regulator

8 E-SOP

35

OZ8111

Ultra High Efficiency DC/DC

16 QFN36

OZ8116/
OZ8138Single Ultra High Efficiency DC/DC /Dual Ultra High Efficiency DC/DC

16 QFN/
24 QFN37

OZ812

DDR/DDR2/DDR3 Integrated
Power Supply

24 QFN38

OZ81252 Phase CPU DC/DC Compliant with Intel
VR12.528 QFN39

OZ8127

2 Phase CPU DC/DC Compliant with Intel
VR12.6+28 QFN40

Mobile Communications
Product Guide
Part
NumberDescription

Package(s)Available(Lead-free)

Page
No.

DC/DC Converter Controllers (cont.)
OZ8150Single Ultra High Efficiency DC/DC with
5V Regulator and Switch-Over

16 QFN41

OZ8153

Dual Ultra High Efficiency DC/DC
with 5V Regulator and Switch-Over

24 QFN42

OZ8155

Dual Ultra High Efficiency DC/DC
with 5V Regulator and Switch-Over

28 QFN43

OZ8290Precision DC/DC for Intel® CPU

32 QFN44

OZ8291

Precision DC/DC, IMVP6+ Compliant

32 QFN45

OZ8292

Precision DC/DC, IMVP6+ and 6.5
Compliant

40 QFN46

OZ82932 + 1 Phase CPU DC/DC Compliant withIntel IMVP740 QFN47

OZ8296

1 + 1 Phase CPU DC/DC Compliant withIntel IMVP7

32 QFN48

OZ83212 + 1 Phase CPU DC/DC Compliant withAMD SVI2

40 QFN49

OZ83215 2 + 1 Phase GPU DC/DC Compliant withAMD SVI2

40 QFN50

OZ83222 + 2 Phase CPU DC/DC Compliant withAMD SVI2

40 QFN51

OZ8380A Dual Phase Ultra High Efficiency DC/DC
for AMD SVI Mobile Processors

32 QFN

52

Dual Phase Ultra High Efficiency DC/DC
for AMD SVI Mobile Processors

24 and 28 QFN53

OZ8390E Single Phase Ultra High Efficiency DC/DC
for AMD SVI Mobile Processors

20 and 24 QFN54

OZ8384

4

Mobile Communications
Mission Statement
Be the industry leader in Mobile Communications solutions for efficient,highly integrated, power management ICs.

PRODUCTS
O2Micro’s Intelligent Power for Mobile Communications solutions
empower Lighting, Power Management and DC/DC Converter
Controller IC products.
Lighting ICs, part of the Intelligent
Lighting family of LED controllers,
include highly efficient backlight solutions
for mobile communications applications.
Power Management ICs include highly
integrated, mixed signal Battery Chargers,
Chargers with Hybrid Power Boost technology and Battery Monitors
designed to charge notebook batteries with unmatched efficiency andreliability and provide safe battery management.
DC/DC Converter Controller ICs are driven by Constant-RippleCurrent® technology, and are specially developed to design highefficiency power supplies.

5

OZ521

Boost Converter Controller
FEATURES• Supports wide-range operating voltage• Integrated with a 50V, 4A power MOSFET• Supports an optional spread-spectrum switching frequency• In applications:- Supports either constant-voltage or constant-current output- Protection includes: output over-voltage, power MOSFET over-current,
over-temperature, and open rectifier diode- Low standby current

GENERAL DESCRIPTIONOZ521 is a boost converter controller suitable for LED lighting or general purpose DC/DC converter applications. It is designed as a current-mode controller
for boost converter applications.
OZ521 integrates a 50V/4A MOSFET as the switch and compensation components for the boost converter to optimize the cost/performance of applications.

APPLICATIONS		• LED Lighting• DC/DC Converter

Patents pending.

6

APPLICATION DIAGRAMOZ535FEATURES

Compact LED Driver• Operates with single cell Li-Ion battery as power supply• 2.5V ~ 5.5V VCC operation voltage range• Integrated 40Vds, 0.3Ω power MOSFET• Drives up to 10 LEDs in series• Self-adaptive operating frequency, optimizing efficiency• Integrated PWM to analog dimming converter• Supports up to 100:1 analog dimming ratio• Protection includes: output over-voltage and over-current, LED short circuit
to ground, and IC over-temperature• Output capacitor discharge function in shutdown mode
• Low standby current

GENERAL DESCRIPTIONOZ535 is a high efficiency boost DC/DC converter with an integrated power
MOSFET. It can drive 1 LED string with up to 10 LEDs connected in series.
OZ535 provides the user with a compact solution that requires minimum components for the boost regulator. It is suitable for portable device applications
using a single cell Li-Ion battery.

APPLICATIONS		• LED Lighting• Tablet• Cell Phone

U.S. Patent #7,471,144; and more patents pending.

7

APPLICATION DIAGRAMOZ536Compact LED Driver
FEATURES• Supports single cell Li-Ion battery operation• Integrated 45V, 0.1Ω power MOSFET• Drives any number of strings of LEDs up to 6 strings maximum• Up to 30mA current per string• Built-in PWM to analog dimming integrator• Up to 100:1 true analog dimming ratio• +/-0.5% typical LED current matching• No noise or interference to touch panel• Protection includes: LED short circuit to ground, over-voltage, open rectifier
diode, MOSFET over-current, and over-temperature• Low standby current

GENERAL DESCRIPTIONOZ536 is a highly integrated and efficient LED driver controller designed for the
LCD backlight in portable applications.
OZ536 provides an integrated circuit to balance the current flow for each LED
string, as well as an integrated power MOSFET for the boost converter. The on
resistance of the power MOSFET provides excellent power efficiency for batterypowered portable applications.

APPLICATIONS		APPLICATION DIAGRAM• LED Lighting• Tablet• Cell Phone

U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

8

OZ9956B

Six String LED Controller
FEATURES• High frequency DC/DC power converter for LEDs
• Drives up to 6 strings in parallel• Integrated LED current balance control circuit, and power MOSFET• Wide input voltage range• Up to 2.0MHz switching frequency• External PWM dimming• Over-voltage and over-current protection• Soft start function

GENERAL DESCRIPTIONOZ9956B is a high efficiency, DC/DC controller that drives up to six (6) stringsof LEDs in parallel configuration, with multiple LEDs in each string connected inseries. It is targeted for notebook/netbook applications.
It provides six (6) LED current sense inputs in an “OR” configuration for improved backlight reliability. This allows the backlight to remain functional in theevent that any string(s) is damaged during normal operation.
OZ9956B can receive either an analog signal or an external Pulse Width Modulation (PWM) signal for the dimming control function.
This IC provides an integrated circuit to balance the current flow through each
LED string, as well as, the integrated power MOSFET.

APPLICATIONS		APPLICATION DIAGRAM• Notebook/Netbook
ComputerU.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

9

OZ9956E

Six String LED Driver Controller
FEATURES• Highly integrated LED driver controller• 2.5V – 33V input voltage range• Drives up to 6 strings of LEDs in parallel• Up to 30mA current per string• Built-in LED current balance control circuit• Integrated power MOSFET• Built-in 20kHz PWM dimming control eliminates audible noise• Supports external PWM dimming control• 100:1 dimming ratio at 20kHz PWM frequency• Protection: over-voltage, over-current, thermal, and open rectifier diode

GENERAL DESCRIPTIONThe OZ9956E is a highly efficient, integrated LED driver controller designed for
middle power LCD backlight applications. Featuring a very wide operational
input voltage range, it works as a universal solution for applications powered by
one or multiple Li-Ion battery cells or those directly powered by an adapter.
It provides six (6) LED current sense inputs in an “OR” configuration for improved backlight reliability. This allows the backlight to remain functional in theevent that any string(s) is damaged during normal operation.
OZ9956E accepts external Pulse Width Modulation (PWM) dimming signals toperform either directly controlled external or fixed 20kHz internal dimming
function.

APPLICATIONS		APPLICATION DIAGRAM• Notebook/Netbook
ComputerU.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

10

OZ9960

High Power LED Controller
FEATURES• High frequency DC/DC boost converter controller• Integrated power MOSFET• Supports low input voltage• Up to 200mA LED current• External PWM dimming• Open LED protection• MOSFET over-current protection• Soft start function

GENERAL DESCRIPTIONOZ9960 is a high efficiency DC/DC boost converter controller that drives astring of LEDs connected in a serial configuration. It is ideal for small and midsize LCD backlight applications.
OZ9960 supports a wide input range and constant, user-defined operating
frequency for a single string LED application. It receives an external Pulse Width
Modulation (PWM) signal for dimming control.

APPLICATIONS		• Notebook/Netbook
Computer
• GPS
• PND

Patents pending.

11

APPLICATION DIAGRAM

OZ9979

Six String LED Controller with Phase-ShiftDimming Internal MOSFETFEATURES• High efficiency DC/DC boost converter controller• Integrated power MOSFET, and LED current balance control circuit• Drives up to 6 strings in parallel• Supports external, internal PWM and analog dimming• Enhanced dimming resolution• Supports 6 equal-delay PWM dimming signals• PWM dimming frequency synchronized with external signal• Protection includes: MOSFET over-current, over-voltage, LED short circuit
detection, output short circuit/open diode, and thermal• Soft start function

GENERAL DESCRIPTIONOZ9979 is a high efficiency, DC/DC controller that drives up to six strings ofLEDs connected in parallel configuration; with multiple LEDs in each string connected in series. It is targeted for notebook backlight applications.
The IC provides six (6) LED current sense inputs in an “OR” configuration forimproved backlight reliability. This allows the backlight to remain functional in
the event that any string(s) is damaged during normal operation.

APPLICATIONS		APPLICATION DIAGRAM• Notebook Computer

U.S. Patent #’s 7,498,793; 7,847,783; 8,248,439; and more patents pending.

12

OZ9993

Low Cost White LED Controller
FEATURES• High frequency DC/DC boost converter controller• Supports a single cell Li-Ion battery• Fixed 975kHz switching frequency• Integrated power MOSFET with over-current protection• Output over-voltage protection• Open diode or output short circuit protection• Thermal protection

GENERAL DESCRIPTIONOZ9993 is a high efficiency, DC/DC controller with an integrated power MOSFET
that drives one string of LEDs. It provides the user with a low cost solution that
requires minimum components for the boost regulator and is suitable for applications requiring a single cell Li-Ion battery.
A soft start feature is provided to minimize in-rush current during start-up.

APPLICATIONS		APPLICATION DIAGRAM• Netbook Computer• PND• Camcorder

U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

13

OZ523

Step Down DC/DC Converter
FEATURES• Supports constant voltage or constant current applications• 1.5A continuous output current• 0.25Ω internal Power MOSFET• Stable control loop
• VOUT from 0.8V to 0.9*VIN• Soft start function• Fixed switching frequency• Low current shutdown mode
• Over-current and thermal protection

GENERAL DESCRIPTIONThe OZ523 is a fast response PWM controller using minimum external components to achieve control loop stability in DC/DC and LED driver applications. It
supports both constant voltage and constant current applications. OZ523 canoperate in constant current mode to drive high power LED applications.
OZ523 is a non-synchronous step down DC/DC converter with a 0.25Ω integrated MOSFET. It supports a 1.5A continuous load current with up to 3.2A peakcurrent. The output voltage can be user-defined from 0.8V up to 0.9*VIN using a
feedback resistor divider.

APPLICATIONS		• General Purpose DC/DC
Converter• High Power LED DriverPatents pending.

14

APPLICATION DIAGRAMOZ524

Step Down 3A DC/DC Converter
FEATURES• Supports constant voltage or constant current applications• 3.0A continuous output current• 0.12Ω internal Power MOSFET• Stable control loop
• VOUT from 0.8V to 0.9*VIN• Soft start function• Fixed switching frequency• Low current shutdown mode
• Over-current and thermal protection

GENERAL DESCRIPTIONThe OZ524 is a fast response PWM controller using minimum external components to achieve control loop stability in DC/DC and LED driver applications. It
supports both constant voltage and constant current applications. OZ524 canoperate in constant current mode to drive high power LED applications.
OZ524 is a non-synchronous step down DC/DC converter with a 0.12Ω integrated MOSFET. It supports a 3.0A continuous load current with up to 4.7A peakcurrent. The output voltage can be user-defined from 0.8V up to 0.9*VIN using a
feedback resistor divider.

APPLICATIONS		• General Purpose
DC/DC Converter• High Power LED DriverPatents pending.

15

APPLICATION DIAGRAMOZ526

White LED Controller
FEATURES• High frequency DC/DC power converter for LEDs
• Integrated power MOSFET• Integrated LED current balance control circuit• User-defined operation frequency• Drives 1 or 2 strings• External PWM and Analog dimming control• Converter output over-voltage protection• Internal power MOSFET over-current protection• Over-current protection for each string• Output short circuit detection• Open diode and thermal protection

GENERAL DESCRIPTIONThe OZ526 is a high efficiency DC/DC controller with an integrated power
MOSFET that drives one string or two LED strings in parallel configuration, withmultiple LEDs connected in series. It is targeted for netbook and PND (Personal
Navigation Device) backlight applications.
OZ526 provides two LED current sense inputs in an “OR” configuration forimproved backlight reliability. This allows the backlight to remain functioning in
the event that any string(s) is damaged during normal operation. The controller receives an external Pulse Width Modulation (PWM) signal for the dimming
control function.

APPLICATIONS		APPLICATION DIAGRAM

• GPS
• PND

U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

16

OZ527

Automotive GPS LED Controller
FEATURES• High power DC/DC power converter• Integrated Power N-Channel MOSFET• Integrated LED current balance control circuit• Drives up to 6 strings in parallel• User-defined string selection• Time-shift PWM phase dimming control for low audible noise• Operation frequency synchronization• LED open string protection• Output short circuit or open diode protection• LED short circuit protection• MOSFET over-current protection• Shutdown under abnormal condition protection• Thermal protection• LED fault status output

GENERAL DESCRIPTIONThe OZ527 is a high efficiency DC/DC controller that drives up to six strings
connected in parallel configuration with multiple LEDs in each string connected
in series.
OZ527 provides 6 LED current sense inputs in an “OR” configuration to improvebacklight reliability. This allows the backlight to remain functioning in the eventthat a string(s) is damaged during normal operation.
OZ527 supports external Pulse Width Modulation (PWM) dimming control.

APPLICATIONS		APPLICATION DIAGRAMS• GPS

U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

17

OZ528FEATURES

LCD Bias Supply Controller• High power DC/DC power
converter• Operation frequency
synchronization• Optional spread spectrum
operation frequency• Thermal, over-current, and overload protection• Abnormal pulled-up output
protection• LED fault status output

Two Independent Boost Converters• Integrated power MOSFET• Current mode control• Wide output range: up to 25.0V• Adjustable power on/off delay time
• Soft start function
Negative Charge Pump
• Voltage mode control• Adjustable power on/off delay time

Buck Converter• Integrated power MOSFET• Current mode control• Soft start function

GENERAL DESCRIPTIONThe OZ528 is a LCD panel bias power supply controller, suitable for GPS application. It generates four voltage rails for a TFT LCD panel. It includes a boost
converter to provide the source voltage, buck converter to provide the logic
voltage for the system, boost converter for positive gate voltage and a negative
charge-pump driver to provide adjustable regulated output voltages to bias the
TFT panel.
OZ528 has power-on sequencing. The buck converter is the first to start after
the IC is enabled. Two boost converters and a negative charge-pump are enabled when their corresponding TIMER reaches approximately 2.0V.

APPLICATIONS		• GPS

Patents pending.

18

APPLICATION DIAGRAM

OZ9961

Six String LED Controller
FEATURES• High frequency DC/DC power converter controller• Drives 6 LED strings in parallel• Integrated LED current balance control circuit• Up to 2.35MHz switching frequency• Analog or external PWM or internal LPWM dimming control• Over-current and over-voltage protection• Thermal protection• Open diode and open/short circuit protection• Soft start function

GENERAL DESCRIPTIONThe OZ9961 is a LED controller that drives up to six (6) strings of LEDs in parallel configuration, with multiple LEDs per string connected in series. It provides
six (6) LED current sense inputs in an “OR” configuration to improve backlightreliability. This allows the backlight to remain functional in the event that any
string(s) is damaged during normal operation.
OZ9961 supports either analog, external Pulse Width Modulation (PWM) orinternal Low frequency PWM (LPWM) dimming control.

APPLICATIONS		APPLICATION DIAGRAM• LCD Monitor• GPS

U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

19

OZ9965

FEATURES

LED Controller + 2 – DC/DC• Integrated LED controller and two(2) DC/DC converters• User-defined operation frequency• Wide input voltage range• Thermal protection• User-defined shutdown delay time
• LED fault status output
LED Controller• User-defined boost topology orbuck-boost topology• Current mode control• Drives up to 4 strings of LEDs inparallel• User-defined string selection• Integrated LED current balance
control circuit• External PWM dimming control• LED open string and short circuit
protection

LED Controller (cont.)• MOSFET over-current protection• Over load protection• Output short circuit or open diodeprotection
Boost Converter• Current mode control• Over-voltage protection• MOSFET over-current protection• Over load protection• Soft start function
General Purpose Converter• User-defined negative buck-boost
or buck topology• Voltage mode control• Over-voltage and over loadprotection• Soft start function

GENERAL DESCRIPTIONThe OZ9965 is a wide input range, multi-output, power management controller
for small panel LCD applications. It controls the DC/DC power conversion froma single input supply voltage to provide the power needed to drive an LED backlight module, source drivers and gate drivers used in a LCD application.
OZ9965 includes a high power LED driver controller, a boost converter, and one
general purpose converter that can be configured into either a buck or negative
buck-boost converter.

APPLICATIONS		
• Car TV
• GPS

U.S. Patent #7,847,783; and more patents pending.

20

APPLICATION DIAGRAM

OZ9990

Four String High Power Buck/Boost LED Driver
FEATURES• High power DC/DC power converter controller• Drives up to 4 strings in parallel• Integrated LED current balance control circuit• User-defined string selection• Operation frequency synchronization• External PWM dimming control• Time-shift PWM phase dimming control for low audible noise• LED open string protection• Output short circuit and open diode protection• LED short circuit protection• MOSFET over-current protection• Thermal protection• LED fault status output• Soft start function

GENERAL DESCRIPTIONOZ9990 is a LED controller that drives up to four (4) strings connected in parallel configuration, with multiple LEDs per string connected in series. It provides
four (4) LED current sense inputs in an “OR” configuration to improve backlightreliability. This allows the backlight to remain functioning in the event that any
string(s) is damaged during normal operation.
OZ9990 supports external Pulse Width Modulation (PWM) dimming control,
and provides an integrated circuit to balance the current flow through each LED
string.

APPLICATIONS		APPLICATION DIAGRAM• Car TV
• GPS

U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

21

OZ9998A

Eight String High Power LED Controller
FEATURES• High power DC/DC boost converter controller• Drives up to 8 strings in parallel• Integrated LED current balance control circuit• User-defined string selection• External PWM dimming control• Time-shift PWM phase dimming control for low audible noise• Multi-chip parallel operation for more than 8 LED strings• MOSFET over-current protection• LED short circuit and open string protection• Thermal protection• LED fault status output

GENERAL DESCRIPTIONOZ9998A are high efficiency, DC/DC controllers that drive up to eight (8) stringsof LEDs connected in parallel configuration, with multiple LEDs in each string
connected in series. Each IC provides eight (8) LED current sense inputs in an“OR” configuration to improve backlight reliability. This allows the backlightto remain functional in the event that any string(s) is damaged during normal
operation.
OZ9998A support external Pulse Width Modulation (PWM) dimming control.
Plus, each provides an integrated circuit to balance the current flow througheach LED string.

APPLICATIONS		APPLICATION DIAGRAM• LCD Monitor• LCD TV

U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.

22

OZ522FEATURES

Charger + DC/DC PMU

Charger• 550KHz switching mode charger
for 1 – 4 cell Li-Ion or Li-Polymer
batteries• Supports fast charge mode
• Wake-up charging function for
discharged batteries• Built-in charge termination function• Internal safety timer for charger• 92% efficiency• Automatic battery recharge• 1% constant voltage accuracy• Charge status indication by LED• Battery absence detection

DC/DC Converters• Two switch mode buck converters
with under-voltage protection• 2% voltage accuracy• Output protection:- Over-current for each DC/DC
converter- Over-voltage lockout on adapter
voltage- Under-voltage lockout on battery
voltage• Output voltage range of 1.0V to 5.5V
• Integrated soft start function, 4ms
soft start function at start-up• ON/OFF control pin

GENERAL DESCRIPTIONThe OZ522 is a charger plus DC/DC Power Management Unit (PMU). It provides
a complete charging algorithm to control 1 – 4 cell Lithium Ion (Li-Ion) batteries,
used in Portable DVDs (PDVDs), and other portable electronic equipment.
It delivers a wake-up charging current for discharged batteries followed by a fast
charging current to minimize the charging time, and keeps the battery regulation
voltage within 1% accuracy. A battery temperature sensing scheme allows thebattery to be charged within a user-defined temperature range. The switch modecharger allows use of low AC adapter voltage at high efficiency.

APPLICATIONS		APPLICATION DIAGRAM• PDVD

U.S. Patent #’s 7,268,520; 7,977,911; and more patents pending.

23

OZ8071

USB Protection IC and Battery Charger
FEATURES• USB-powered switching charger• Dynamically allocates input power, first to the system and then to charging• Integrated power MOSFET transistors• USB 2.0, 3.0, and USB battery charging specification compliant• Up to 1.5A charging current when powered from USB charging downstream
port• Protection includes: input over‑voltage (6V) and under-voltage (4V), charger
over-voltage, and thermal trip point 150°C• Microcontroller controlled input current limits• Stable with low ESR ceramic capacitors• VBUS from 4.0V to 5.5V in operation; VBUS and VOUT status indicators• Supports battery voltage from 0V up to 8.8V
• Final charging voltage (CV mode) settable in the range of 8.0V to 8.8V
• Adjustable frequency from 0.5MHz to 2MHz

GENERAL DESCRIPTION

OZ8071 is a USB compliant power IC assuring 2-cell, Li-Ion battery charging;and protection of both the battery and USB upstream power bus.
When OZ8071 is connected to a USB port and not enabled, it takes, at most,
300μA. Once enabled, by asserting the EN pin “high,” it wakes up and limits thecurrent taken from the USB port at the set limit. The guest system’s controller
performs the handshake with the host and sets the current limit by correspondingly asserting the digital command inputs B0 and B1.

APPLICATIONS		APPLICATION DIAGRAM• Camcorder, DSLR, DSC• USB-powered Devices

U.S. Patent #’s 6,246,215; 6,326,771; 7,615,965; and more patents pending.

24

OZ8555

Battery Charger/Boost Controller
FEATURES• High accuracy, switched mode, 1 cell Li-Ion charger with integrated
MOSFETs• 0.5% voltage mode accuracy; 3% current mode accuracy• Maximum charge current of 2A; 1 MHz operating frequency• Boost output voltage accuracy 5.15V ±2%• Integrated power by adapter switch/5V LDO for V5V rail
• Integrated power by adapter switch for VSYS rail
• Adapter current sensing with programmable adapter current limit• Dynamic current allocation• Integrated 3.3V LDO with 1% output accuracy• 3.3V DC/DC input voltage selector driving signals• Protection includes: boost over-current and over-temperature• 12 hours safety timer• Thermistor sensing input

GENERAL DESCRIPTION

OZ8555 is a charger/boost controller specially developed for 1 cell Li-Ion-powered handheld devices such as a MID. It offers better performance at a lower
cost by integrating a 5V boost converter and replacing the linear regulator with aswitching mode charger. The charger has better efficiency and up to 2A charge
current capability.
The boost converter is optimized to provide high efficiency over a wide load
range, with a 20mA typical current consumption under no load condition.

APPLICATIONS		APPLICATION DIAGRAM• 1 Cell Li-Ion handheld
devices• MID• Smart Phone

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,598,718; 7,816,896; and more patents pending.

25

OZ8556

Battery Charger/Boost Controller
FEATURES• High accuracy, switched mode, 1 cell Li-Ion charger with integrated MOSFETs• 0.5% voltage mode accuracy; 3% current mode accuracy• Maximum charge current of 4A; 1 MHz operating frequency• Boost with integrated MOSFETs operating from battery voltage >2.5V when
adapter is not present• Boost output voltage accuracy 5V ±2%• Integrated 5V LDO for V5V rail
• Integrated power by adapter switch for VSYS rail
• Soft start for V5V and VSYS to avoid inrush current from adapter• VADP can sustain 20V• Adapter current sensing with programmable adapter current limit, accuracy 3%• Dynamic current allocation• Integrated 3.3V LDO with 1% output accuracy• 3.3V DC/DC input voltage selector driving signals• Protection includes: over-voltage for charging, boost over-current, overand under-voltage for VADP, under-voltage threshold adjustable and overtemperature• 12 hours safety timer• Thermistor sensing input

GENERAL DESCRIPTION

OZ8556 is a charger/boost controller specially developed for 1 cell Li-Ion-powered handheld devices such as a MID and tablet. It offers better performance ata lower cost by integrating a 5V boost converter and replacing the linear regulator with a switching mode charger. The charger has better efficiency and up to
4A charge current capability.
The boost converter is optimized to provide high efficiency over a wide load
range, with a 20mA typical current consumption under no load condition.

APPLICATIONS		APPLICATION DIAGRAM• 1 Cell Li-Ion handheld devices• MID• Tablet• Smart Phone

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,598,718; 7,816,896; and more patents pending.

26

OZ8618

Battery Charge Controller with Selector
FEATURES• Battery Charge Controller with NMOS system power selector• NMOS synchronous Buck Converter topology• Programmable wake-up current and voltage threshold• High efficiency of (>95%)• ±0.5% constant voltage, ±5% charging current, and ±5% input current
limiting accuracies• Outputs charging and adapter current information for monitoring• Analog inputs to program charging current, charging voltage, and adapter
current limit• Dynamic AC adapter current allocation for maximum charging rate
• Protection includes: built-in adapter and battery under-voltage, short circuit,over-voltage, and over-current• Built-in protection for operation at low charging current• Automatic AC Adapter voltage detection• Easy interface with a microcontroller• Charges batteries of various chemistries, including Li-Ion with 2, 3, and 4 cells

GENERAL DESCRIPTIONOZ8618 is a high performance battery charge controller with adapter and charging current sensing, programmable wake-up, and the required logic and drivers
to manage the NMOS system’s power path. It can operate as a stand-alone
charger or under the supervision of a host microcontroller. It provides complete
battery charging control for single battery portable systems. Multiple battery
configurations may also be implemented with OZ8618 using a discrete battery
selector.
OZ8618 uses two high-side current sensors. When charging with the system
ON, it dynamically allocates all remaining AC adapter current not used by thesystem to the charger, achieving the shortest possible charging time.

APPLICATIONS		APPLICATION DIAGRAM• Notebook/Netbook
Computer• Ultra Mobile Computers

U.S. Patent #’s 6,498,461; 6,611,129; 6,861,823; 7,202,634; 8,350,532; 8,450,977; and more patents pending.

27

OZ8660

Single Battery Charger Controller
FEATURES• Highly integrated, high accuracy, single battery charge controller• Synchronous buck converter topology with integrated power MOSFET• System power selector with integrated power MOSFET• Charging current up to 4A; high efficiency of >94%
• 0.5% constant voltage, ±2% charging current, and ±2% input current limiting
accuracies• Outputs adapter and battery charge/discharge current information formonitoring• Analog inputs to program charging current, charging voltage and input
current limit• Programmable wake-up voltage threshold• Protection includes: battery reverse connection, built-in adapter undervoltage (8.75V < VVAD), built-in battery under-voltage/short circuit, overvoltage and over-current, built-in protection for operation at low charging
current and over-temperature shutdown• Dynamic AC adapter current allocation for maximum charging rate
• Automatic AC Adapter voltage detection• Charges batteries of various chemistries, including Li-Ion with 2, 3, and 4 cells

GENERAL DESCRIPTIONOZ8660 is a high performance battery charge controller with four power MOSFETs, from power switching and selector, integrated into one package. It has
input and charging current sensing, and programmable wake-up threshold withassociated logic and drivers to manage the integrated system’s power path. It
can operate under the supervision of a host microcontroller, and provides complete battery charging control for single battery portable systems.
OZ8660 uses two high-side current sensors. When charging with the system ON,
it dynamically allocates all remaining AC adapter current not used by the system
to the charger, achieving the shortest possible charging time.

APPLICATIONS		APPLICATION DIAGRAM• Notebook Computer• Portable Electronics

U.S. Patent #’s 6,498,461; 6,611,129; 6,861,823; 7,202,634; 8,350,532; 8,450,977; and more patents pending.

28

OZ8681

SMBus Level 2 Battery Charger
FEATURES• NMOS synchronous topology with fixed frequency and >95% efficiency• ±0.5% battery voltage, ±3% charging current and ±3% adapter current
accuracies• Simplified SMBus control of battery voltage, charge current and adapter
input current• 11-bit DAC battery voltage setting (1.024V – 19.200V)• 6-bit DAC charge current setting (128mA – 8.064A)• 6-bit DAC adapter current setting (256mA – 11.008A)• Space-saving 16-pin QFN• Automatic AC Adapter voltage detection• Outputs valid adapter presence• Outputs adapter current/battery discharge current• Protection includes: built-in battery over‑voltage, over-current, reverse
connection, and embedded thermal shutdown• Charges batteries of various chemistries, including Li-Ion with 1 to 4 cells

GENERAL DESCRIPTIONOZ8681 is a highly integrated, SMBus programmable, multi-chemistry battery
charge controller with adapter current information available at the output. It is
intended to be used as a smart battery charger (SBC) within a smart battery
system (SBS). It uses a minimal SMBus command set to easily program thecharging voltage and current, and adapter current limit. It provides complete
battery charging control for single battery portable computer systems.
OZ8681 uses two high-side current sensors. When charging with the system
ON, OZ8681 dynamically allocates all remaining AC adapter current not used by
the system to the charger, achieving the shortest possible charging time.

APPLICATIONS		APPLICATION DIAGRAM• Notebook/Netbook
Computer• Ultra Mobile
Computers

U.S. Patent #’s 6,498,461; 6,611,129; 6,861,823; 7,202,634; and more patents pending.

29

OZ8682

SMBus Level 2 Battery Charger with
Hybrid Power Boost
FEATURES• Hybrid Power Boost feature allows battery to provide power in parallel with
the AC adapter• NMOS synchronous topology with fixed frequency and >95% efficiency• ±0.5% battery voltage, ±3% charging current, and ±3% adapter current
accuracies• Simplified SMBus control of battery voltage, charge current and adapter
input current• 11-bit DAC battery voltage setting (1.024V – 19.200V); 6-bit DAC charge
current setting (128mA – 8.064A); 6-bit DAC adapter current setting (256mA– 11.008A)• Space-saving 16-pin QFN• Automatic AC Adapter voltage detection; outputs valid adapter presence• Outputs adapter current/battery discharge current• Protection includes: built-in battery over‑voltage, over-current, reverse
connection, and embedded thermal shutdown• Charges batteries of various chemistries, including Li-Ion with 1 to 4 cells

GENERAL DESCRIPTIONOZ8682 is a highly integrated, SMBus-programmable, multi-chemistry battery
charge controller with a hybrid power boost feature. It is intended to be used asa smart battery charger (SBC) within a smart battery system (SBS), providing
complete battery charging control for single battery portable computer systems.
OZ8682 uses two high-side current sensors. When charging with the system
ON, OZ8682 dynamically allocates all remaining AC adapter current not used by
the system to the charger, achieving the shortest possible charging time.

APPLICATIONS		APPLICATION DIAGRAM• Notebook/Netbook
Computer• Ultra Mobile
Computers

U.S. Patent #’s 6,498,461; 6,611,129; 6,861,823; 7,202,634; 7,719,236; and more patents pending.

30

OZ8690

SMBus Level 2 Battery Charger with
Hybrid Power Boost
FEATURES• Highly integrated, high accuracy, single battery charge controller• Synchronous buck converter topology and system power selector withintegrated power MOSFET• High efficiency of >95%; and Hybrid Power Boost feature allows battery toprovide power in parallel with the AC adapter• ±0.5% charge voltage, ±3% charging current, and ±3% adapter current
accuracies• Simplified SMBus control of battery voltage, charge current and adapter
input current• 11-bit DAC battery voltage, 7-bit DAC charge current, and 6-bit DAC
adapter current settings• Programmable switching frequencies, battery depletion threshold, maximum
boost current, battery learning mode and AC adapter voltage detection• Outputs valid adapter presence, and adapter current/battery current
information; and no battery charge using airplane power• Protection includes: built-in battery over-voltage, over-current and reverse
connection; built-in adapter under-voltage, over-voltage and reverse
connection; and embedded thermal shutdown

GENERAL DESCRIPTIONOZ8690 is a highly integrated, SMBus-programmable, multi-chemistry battery
charge controller with the Hybrid Power Boost feature. It includes the logic anddrivers required to manage the system’s power path. It is intended to be used
as a smart battery charger (SBC) within a smart battery system (SBS). It uses aminimal SMBus command set to easily program the charging voltage, charging
current and adapter current limit.
OZ8690 uses two high-side current sensors. When charging with the system
ON, it dynamically allocates all remaining AC adapter current not used by thesystem to the charger, achieving the shortest possible charging time.

APPLICATIONS		APPLICATION DIAGRAM• Notebook/Netbook
Computer• Ultra Mobile Computers

U.S. Patent #’s 6,498,461; 6,611,129; 6,861,823; 7,202,634; 8,350,532; 8,450,977; and more patents pending.

31

OZ8806

Monitor + High Accuracy Coulomb Counter
FEATURES• Efficient Smart Phone and Tablet battery monitor and high accuracy
Coulomb Counter for 1-2 cell batteries• Monitors:- Battery voltage- Temperature- Current for coulomb counting, state-of-charge and battery gauge• Resides in either the Host or Battery Pack
• Supports I2C communication protocol• OCV (Open Circuit Voltage) detection when chip is in start-up and sleep modes• Low power consumption

GENERAL DESCRIPTION

OZ8806 is a single cell battery monitor chip that can work in either the battery
pack or host. It provides current-flow, voltage, and temperature measurement
data to support battery capacity monitoring in cost-sensitive applications.
Current measurement and coulomb counting are accomplished by monitoring the voltage drop across an external sense resistor. Voltage measurement isaccomplished through a separate voltage-sense input. GPIO (General Purpose
Input Output) pins can be used to detect the battery temperature, among otherpurposes.

APPLICATIONS		APPLICATION DIAGRAM• Tablet• PDA/Smart Phone• Cell Phone• Digital Camera/
Camcorder• Handheld Rechargeable
Battery-powered Products

U.S. Patent #’s 6,744,394; 7,095,211; 7,161,520; 7,196,652; 7,218,083; 7,557,540; 8,219,333; 8,222,869; 8,384,390;
8,461,806; and more patents pending.

32

OZ8002

Dual Channel MOSFET Driver
FEATURES• Dual channel driver• Operating voltage up to 35V• Integrated bootstrap diode• LDREN signal which can turn off low side MOSFET in light load,
guaranteeing higher efficiency• Internal pull down resistors, at PWM and LDREN pins, to disable channel
not connected to controller

GENERAL DESCRIPTION

OZ8002 is a dual channel driver that can be connected to the synchronous buckcontroller that has no integrated driver. Integrated bootstrap diodes simplify thedesign and reduce the PCB area.
OZ8002 provides the LDREN signal. Together with the CRC controller (OZ8322,
for example) in light load, LDREN low will turn off both the high and low side
MOSFETs. This can lead to higher efficiency in light load.

APPLICATIONS		• Notebook and Tablet(where synchronous
buck controller, without
integrated driver)

U.S. Patent #7,466,113; and more patents pending.

33

APPLICATION DIAGRAM

OZ8013

3A Synchronous DC/DC Regulator
FEATURES• 3A synchronous DC/DC controller with integrated MOSFETs• Constant-Ripple-Current® (CRC) control allows designing for optimum
inductor size
• High efficiency up to 94%; High light load efficiency of >85% at 10mA
• VREF accuracy of 1.5%
• Input voltage from 2.7V to 5.5V; Output voltage adjustable from 0.5V to 3.3V
• Output current up to 3A• User-adjustable operating frequency• Dynamic voltage change support; and Voltage feed-forward compensation• Output Protection: latched over-voltage and under-voltage, Valley type overcurrent, and over-temperature• Input Protection: under-voltage lockout on VDDA and VIN• Power Good and ON/SKIP signals• Soft start with OCT protection

GENERAL DESCRIPTIONOZ8013 steps down the input voltage to low output voltages in the range of
0.5V to 3.3V. High efficiency, DC accuracy and excellent transient response
make OZ8013 the perfect choice to supply low power CPU peripherals, chipset
cores, and low power graphics processors.
OZ8013’s voltage feed-forward compensation ensures high rejection of input
voltage transients, typically occurring when the AC adapter is plugged in or
removed.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
Notebook Peripherals
and POL

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,598,718; 7,816,896; and more patents pending.

34

OZ8033

3A Low Dropout Linear Regulator
FEATURES• Ultra low dropout (LDO) regulator• 170mV dropout• 1.5% Accuracy over Line/Load/Temperature• Fast load Transient Response• Internal soft start function• Protection includes: Over-current (OCP), Output Under-voltage (UVP),
Under-voltage Lockout (UVLO) for VDDA and VIN, andOver-temperature (OTP)

GENERAL DESCRIPTION

OZ8033 is a fast, high current, and ultra low dropout (LDO) regulator designed
for DSP Core, front side bus VTT and other similar applications.
The device uses two power supplies: VIN and VDDA. VIN is the main supply
providing the output current; VDDA is an auxiliary supply for all other internal
circuitry. The voltages of both power supplies are internally monitored by the
UVLO circuitry, which disables the chip when any of these voltages is lower than
the safe operation threshold.

APPLICATIONS		• Notebook Computer• Industrial Computer• Automotive Infotainment• FPGA• DSP Core and I/O Voltage• Front Side Bus VTT• Motherboard

U.S. Patent #8,143,872; and more patents pending.

35

APPLICATION DIAGRAM

OZ8111Ultra High Efficiency DC/DCFEATURES• DC/DC SMPS Controller with integrated drivers• CRC control allows designing for optimum inductor size
• High efficiency up to 94%; High light load efficiency of >85% at 100mA• VREF accuracy of 1.5%
• Input voltage from 3V to 25V; Output voltage adjustable from 0.5V to 2.75V• Output current up to 30A• User-adjustable operating frequency• Enhanced dynamic voltage change support; and Voltage feed-forward
compensation• Output Protection: latched over-voltage and under-voltage, and Valley typeover-current• Input Protection: under-voltage lockout on VDDA and VIN• Power Good and ON/SKIP signals• Soft start at start-up with OCT protection• Soft stop at shutdown

GENERAL DESCRIPTION

OZ8111 is a DC/DC controller providing power control for peripherals and chipsets. It steps down the high battery voltage to low output voltages in the rangeof 0.5V to 2.75V. High efficiency, DC accuracy and excellent transient response
make OZ8111 the perfect choice to supply low voltage CPU peripherals, chipset
cores, and graphics processors.
OZ8111’s voltage feed-forward compensation ensures high rejection of input
voltage transients, typically occurring when the AC adapter is plugged in or
removed.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
Notebook Peripherals

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; and more patents pending.

36

OZ8116/8138

Single/Dual Ultra High Efficiency DC/DCFEATURES• OZ8116: Single DC/DC SMPS controller with integrated drivers• OZ8138: Dual DC/DC SMPS controller with integrated drivers• CRC control allows designing for optimum inductor size
• High efficiency up to 94%; High light load efficiency >85% at 100mA• VREF accuracy of 1.5%
• Input voltage from 3V to 25V; Output voltage adjustable from 0.5V to 2.75V• Output current – up to 15A• Output protection: latched over-voltage and under-voltage, and over-current• Input protection: under-voltage lockout on VDDA and VIN• Soft start at start-up• Soft stop at shutdown

GENERAL DESCRIPTION

OZ8116/8138 are DC/DC Switched Mode Power Supply (SMPS) controllers specially developed to provide power control for next generation microprocessors, their
peripherals and chipsets.
These ICs step down the high battery voltage to low output voltages in the range of
0.5V to 2.75V. High efficiency, DC accuracy and excellent transient response make
OZ8116/8138 the perfect choice to supply low voltage CPU peripherals, chipset
cores, and graphics processors.

APPLICATIONS		APPLICATION DIAGRAMS• Power Supplies for
Notebook CPU,
Microcontrollers
and Peripherals• Industrial Computer• GPS

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; and more patents pending.

37

OZ812

DDR/DDR2/DDR3 Integrated Power Supply
FEATURES• DC/DC SMPS Controller with integrated drivers for VDDQ• Integrated Linear Regulator with 2A source and sink capability for VTT• High efficiency, up to 94%; High light load efficiency of >85% at 100mA• VDDQ accuracy of ±1%• Input voltage from 3V to 30V• Output voltage: Preset values at 2.5V or 1.8V, or adjustable from 0.5V to
2.75V• Output current up to 15A• Power Good and ON/SKIP signals• Soft start and Soft stop
• CRC control allows optimum inductor size
• Dynamic voltage change support; and Voltage feed-forward compensation• Output Protection: latched over-voltage and under-voltage, and Valley typeover-current• Input Protection: under-voltage lockout on VDDA and VINGENERAL DESCRIPTION

OZ812 is a DC/DC controller specially developed to design power supplies for
DDR, DDR2 and DDR3 memories. It steps down the high battery voltage to low
output voltages in the range of 0.5V to 2.75V and also provides the memoryreference VTTREF and termination voltage VTT that accurately tracks VDDQ/2. It
is compliant with the DDR, DDR2 and DDR3 specifications.
OZ812’s voltage feed-forward compensation ensures high rejection of input
voltage transients, typically occurring when the AC adapter is plugged in or
removed.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
DDR, DDR2 and DDR3
MemoryU.S. Patent #’s 6,472,897; 6,720,800; 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,319,346; 7,391,191; 7,436,222;
7,466,113; 7,598,718; 7,816,896; and more patents pending.

38

OZ8125

2 Phase CPU DC/DC Compliant withIntel VR12.5
FEATURES• 2 Phase CRC DC/DC controller for CPU core with integrated drivers• 1 Phase option through I2C port
• Supports all required VR12.5 functions• Integrated boost diode; and High efficiency up to 94%• Platform one time programmable maximum load current, VBOOT voltage• Platform-adjustable maximum temperature, operating frequency and slew
rate through high speed I2C port
• 0.5% output voltage accuracy; and 3.5V to 25V input voltage• 8-bit VID code DAC up to 3.04V• Output voltage slew rate controlled at start-up, shutdown, and during VID
dynamic changes• Protection includes: latched over-voltage, cycle-by-cycle over-current, andembedded thermal• Smart pulse skipping feature under light load condition• User-adjustable load line slope

GENERAL DESCRIPTION

OZ8125 is a highly integrated DC/DC controller with integrated drivers. It is comprised of a dual phase controller for the CPU core rail. The output voltages canbe programmed from 0.5V to 3.04V through a high speed serial bus, compliant
with the VR12.5 specifications.
OZ8125 can also work as a single phase controller by disabling phase 2 throughthe I2C port. A single phase controller is more suitable for low power platform
requirements.

APPLICATIONS		APPLICATION DIAGRAM• Intel Mobile Segment
Platform Core Power

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

39

OZ8127

2 Phase CPU DC/DC Compliant withIntel VR12.6+
FEATURES• 2 Phase CRC DC/DC controller for CPU core with integrated drivers• 1 Phase selection option by shorting BST2 to GND• Supports all required VR12.6+ functions• Integrated boost diode; and High efficiency up to 94%• Platform one time programmable maximum load current, VBOOT voltage• Platform-adjustable maximum temperature, operating frequency and slew
rate through high speed I2C port
• 0.5% output voltage accuracy; and 3.5V to 25V input voltage• 8-bit VID code DAC up to 3.04V• Output voltage slew rate controlled at start-up, shutdown, and during VID
dynamic changes• Protection includes: latched over-voltage, cycle-by-cycle over-current, andembedded thermal• Smart pulse skipping feature under light load condition• User-adjustable load line slope• Pb-free plating; RoHS compliant

GENERAL DESCRIPTION

OZ8127 is a highly integrated DC/DC controller with integrated drivers. It iscomprised of a dual phase controller for the CPU core rail. The output voltages
can be programmed from 0.5V to 3.04V through a high speed serial bus, compliant with the VR12.6+ specifications.
By shorting the BST2 pin to GND, OZ8127 can also work as a single phase controller, which is more suitable for low power platform requirements.

APPLICATIONS		APPLICATION DIAGRAM• Intel Mobile Segment
Platform Core Power

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

40

OZ8150

Single Ultra High Efficiency DC/DC with
5V Regulator and Switch-OverFEATURES• Single DC/DC SMPS controller with integrated drivers, 5V/100mA and3.3V/20mA LDOs
• CRC controller allows designing for optimum inductor size
• Integrated boost diode• High full load efficiency up to 94%; High light load efficiency of >85% at 100mA• VOUT accuracy of 1% or better; and Input voltage from 4.5V to 24V• Output voltage adjustable from 1V to 5.5V, and preset function 3.3V and 5V• Output current up to 15A; LDO bootstrap switch-over if V5SO > 4.7V; andPower Good open drain output• Soft start at start-up; Soft stop at shutdown• Voltage feed-forward compensation; and User-adjustable operating frequency• Enhanced dynamic voltage change support; and Non-audio skip mode
• Output Protection: latched over-voltage and under-voltage, and Valley typeover-current• Input Protection: under-voltage lockout on VDDA

GENERAL DESCRIPTION

OZ8150 steps down the high battery voltage to low output voltages in the rangeof 1.0V to 5.5V. High efficiency, DC accuracy, and excellent transient response
make OZ8150 suitable to supply low voltage CPU peripherals, chipset cores,
and graphics processors.
OZ8150’s voltage feed-forward compensation ensures high rejection of input
voltage transients, typically occurring when the AC adapter is plugged in or
removed.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for Notebook
Peripherals and POL

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,143,872; and more patents
pending.

41

OZ8153

Dual Ultra High Efficiency DC/DC with
5V Regulator and Switch-OverFEATURES• Dual DC/DC SMPS controller with integrated drivers, 5V/150mA and3.3V/20mA LDOs
• Two CRC controllers; and Integrated boost diodes• High full load efficiency up to 94%; High light load efficiency >85% at 100mA• VOUT accuracy of 1% or better; and Input voltage from 5.5V to 24V• Output voltage adjustable from 1V to 5.5V, and presets on both channels• Output load current up to 15A; and LDO bootstrap switch-over if
V5SO > 4.7V
• Independent ON/SKIP signals; and Power Good open drain output• Soft start at start-up; Soft stop at shutdown• Voltage feed-forward compensation; and User-adjustable operating frequency• Dynamic voltage change support; and Non-audio skip mode
• Output Protection: latched over- and under-voltage, and Valley typeover-current• Input Protection: under-voltage lockout on VDDA and VINGENERAL DESCRIPTION

OZ8153 steps down the high battery voltage to low output voltages in the rangeof 1.0V to 5.5V. High efficiency, DC accuracy, and excellent transient response
make OZ8153 suitable to supply the main system voltages (5V and 3.3V) to the
CPU peripherals, chipset cores and graphics processors.
OZ8153’s voltage feed-forward compensation ensures high rejection of input
voltage transients, typically occurring when the AC adapter is plugged in or
removed.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
Notebook CPUs
and Peripherals

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,143,872; and more
patents pending.

42

OZ8155

Dual Ultra High Efficiency DC/DC with
5V Regulator and Switch-OverFEATURES• Dual DC/DC SMPS controller with integrated drivers, and 5V/150mA LDOs
• Two CRC controllers; and Integrated boost diodes• High full load efficiency up to 94%; High light load efficiency of >85% at
100mA• VOUT accuracy of 1% or better• Input voltage from 5.5V to 24V• Output voltage adjustable from 1V to 5.5V; and presets on both channels• Output current up to 15A• LDO bootstrap switch-over if V5SO > 4.7V
• Independent ON/SKIP signals; and Power Good open drain outputs• User-adjustable soft start slew at start-up; Soft stop at shutdown• Voltage feed-forward compensation; and User-adjustable operating frequency• Dynamic voltage change support; and Non-audio skip mode
• Output Protection: latched over-voltage and under-voltage, and Valley typeover-current• Input Protection: under-voltage lockout on VDDA and VINGENERAL DESCRIPTION

OZ8155 steps down the high battery voltage to low output voltages in the rangeof 1.0V to 5.5V. High efficiency, DC accuracy, and excellent transient response
make OZ8155 suitable to supply low voltage CPU peripherals, chipset cores,
and graphics processors.
At start-up, OZ8155’s output voltage ramps up in a controlled manner with auser-adjustable slew rate. At shutdown, the output voltage is ramped down in acontrolled manner with the same slew rate.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
Notebook CPUs
and Peripherals

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,143,872; and more
patents pending.

43

OZ8290

Precision DC/DC for Intel CPU
FEATURES• Single phase controller for Low Voltage (LV) and Ultra Low Voltage (ULV) CPUs
• High efficiency up to 94%; and Integrated gate drivers and boost diode• High output voltage accuracy• 3V to 30V input voltage; and 7-bit VID code and adjustable boot voltage• Output voltage slew rate controlled at start-up, shutdown, and during
VID changes• Adjustable latched over-voltage and embedded thermal protection• Cycle-by-cycle over-current protection• Improved input voltage transient behavior through voltage feed-forward
compensation• CRC operation for improved efficiency over wide load, input and output
voltage ranges and optimized inductor value• Smart pulse skipping feature and audible noise suppression under lightload conditions• True differential output voltage remote sensing

GENERAL DESCRIPTIONOZ8290 is a single phase, high efficiency, PWM buck DC/DC controller with integrated half-bridge drivers. The powerful embedded drivers allow single phase
operation, minimizing solution parts count, cost and PCB area.
OZ8290 features patented CRC architecture with superior static and dynamic
CORE voltage regulation. A precision reference, remote sensing and CRC architecture assure high output accuracy for all loads and input/output voltages.

APPLICATIONS		APPLICATION DIAGRAM• LV and ULVMicroprocessor
Core Supply

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

44

OZ8291

Precision DC/DC, IMVP6+ Compliant
FEATURES• Single phase controller for Low Voltage (LV) and Ultra Low Voltage (ULV) CPUs
• High efficiency up to 94%; and Integrated gate drivers and boost diode• High output voltage accuracy• 3V to 30V input voltage; and 7-bit VID code and adjustable boot voltage• Output voltage slew rate controlled at start-up, shutdown, and during
VID changes• Adjustable latched over-voltage and embedded thermal protection• Cycle-by-cycle over-current protection• Improved input voltage transient behavior through voltage feed-forward
compensation• CRC operation for improved efficiency over wide load, input and output
voltage ranges and optimized inductor value• Smart pulse skipping feature and audible noise suppression under lightload conditions• True differential output voltage remote sensing

GENERAL DESCRIPTIONOZ8291 is a single phase, high efficiency, PWM buck DC/DC controller withintegrated half-bridge drivers. It’s compliant with the Intel IMVP6+ specification.
The powerful embedded drivers allow single phase operation, minimizing solution parts count, cost and PCB area.
OZ8291 features patented CRC architecture which provides superior static anddynamic CORE voltage regulation. A precision reference, remote sensing and
CRC architecture assure high output accuracy for all loads and input/output
voltages.

APPLICATIONS		APPLICATION DIAGRAM• LV and ULVMicroprocessor
Core Supply

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

45

OZ8292

Precision DC/DC, IMVP6+ and 6.5 Compliant
FEATURES• Dual phase controller for Low Voltage (LV) and Ultra Low Voltage (ULV)Intel CPUs
• High efficiency up to 94%; and Integrated gate drivers and boost switches• High VCC-CORE accuracy (0.5% from 0.75V to 1.5V)• 4.5V to 24V input voltage; and 7-bit VID code and user-adjustableboot voltage• Output voltage slew rate controlled at start-up, shutdown, and during
VID changes• Adjustable latched over-voltage and embedded thermal protection• Cycle-by-cycle adjustable over-current protection• Improved input voltage transient behavior through voltage feed-forward
compensation• CRC operation for improved efficiency over wide load, input and output
voltage ranges• Smart pulse skipping feature and audible noise suppression under lightload conditions• True differential output voltage remote sensing

GENERAL DESCRIPTIONOZ8292 is a dual phase, high efficiency, PWM buck DC/DC controller withintegrated half-bridge drivers. It’s compliant with the Intel IMVP6 and IMVP6.5
specifications. The powerful embedded drivers allow dual phase operation,
minimizing solution parts count, cost and PCB area.
OZ8292 features patented CRC architecture which provides superior static anddynamic CORE voltage regulation. A precision reference, remote sensing and
CRC architecture assure high output accuracy for all loads and input/output
voltages.

APPLICATIONS		APPLICATION DIAGRAM• LV and ULVMicroprocessor
Core Supply

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; and more patents pending.

46

OZ8293

2 + 1 Phase DC/DC for Intel CPU
FEATURES• Dual phase CRC DC/DC controller with integrated drivers for CPU core; andSingle phase CRC DC/DC controller with integrated drivers for GFX• High efficiency up to 94%; and Integrated boost diodes• Platform-adjustable operating frequency, VBOOT voltage, maximum
temperature, maximum load current, slew rate, SKIP/NAS mode throughhigh speed I2C port
• Rail A phase configuration through I2C or power-on strap option on SCL• 5V to 25V input voltage; 8-bit VID code DAC• Output voltage slew rate controlled at start-up, shutdown, and during
VID changes• Protection includes: latched over-voltage, embedded thermal, and cycle-bycycle over-current• Smart pulse skipping feature and non-audio skipping (NAS) under lightload conditions• User-adjustable load line slope for each rail

GENERAL DESCRIPTIONOZ8293 is a highly integrated DC/DC controller with integrated drivers for thecore (dual phase) and GFX (single phase) rails. It supports all required IMVP7/
VRI2 functions. Both output voltages can be programmed through a high speed
serial bus.
OZ8293 features patented CRC architecture which provides superior static anddynamic CORE voltage regulation. A precision reference, remote sensing and
CRC architecture assure high output accuracy for all loads and input/output
voltages.

APPLICATIONS		APPLICATION DIAGRAM• Notebook CPU Core
and GFX Power Supplies

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

47

OZ8296

1 + 1 Phase DC/DC for Intel CPU
FEATURES• Single phase CRC DC/DC controller with integrated drivers for CPU coreand GFX• High efficiency up to 94%; and Integrated boost diodes• Platform-adjustable operating frequency, VBOOT voltage, maximum
temperature, slew rate, SKIP/NAS mode through high speed I2C port
• 0.8% output voltage accuracy• 3V to 25V input voltage; 8-bit VID code DAC• Output voltage slew rate controlled at start-up, shutdown, and during
VID changes• Protection includes: latched over-voltage, embedded thermal, and cycle-bycycle over-current• Smart pulse skipping feature and non-audio skipping (NAS) under lightload conditions• User-adjustable load line slope for each rail

GENERAL DESCRIPTIONOZ8296 is a single phase, highly integrated DC/DC controller with integrated
drivers the core (single phase) and GFX (single phase) rails. It supports all
required IMVP7/VRI2 functions. The powerful embedded drivers allow single
phase operation, minimizing solution parts count, cost and PCB area.
OZ8296 features patented CRC architecture which provides superior static anddynamic CORE voltage regulation. A precision reference, remote sensing and
CRC architecture assure high output accuracy for all loads and input/output
voltages.

APPLICATIONS		APPLICATION DIAGRAM• Notebook CPU Core
and GFX Power Supplies

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

48

OZ83212 + 1 Phase DC/DC for SVI2 AMD CPU
FEATURES• Dual phase CRC DC/DC controller with integrated drivers dedicated for core
power; and Single phase CRC DC/DC controller with integrated drivers forNorth Bridge (NB) power• High efficiency up to 94%; and Integrated boost diodes• Platform-adjustable operating frequency, maximum temperature, overcurrent protection, slew rate, initial load line slope, initial offset, NAS/SKIP
mode through high speed I2C port
• Rail A phase 2 power-on strap option on BSTA2• 0.8% output voltage accuracy• 5V to 25V input voltage; and 8-bit VID code DAC• Output voltage slew rate controlled at start-up, shutdown, and VID-on-thefly (VOTF)• Protection includes: latched over/under-voltage, embedded thermal, andcycle-by-cycle over-current• Smart pulse skipping feature and non-audio skipping (NAS) under lightload conditions• Low bias differential output voltage remote sensing

GENERAL DESCRIPTION

OZ8321 is a highly integrated DC/DC controller for the core (dual phase) and NB(single phase) rails. Output voltages for both are programmed through a highspeed serial bus. It supports all required SVI2 functions.
OZ8321 features patented CRC architecture which provides superior static anddynamic CORE voltage regulation. A precision reference, remote sensing and
CRC architecture assure high output accuracy for all loads and input/output
voltages.

APPLICATIONS		APPLICATION DIAGRAM• AMD Notebook CPU Coreand NB Power Supplies

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

49

OZ83215

2 + 1 Phase DC/DC for SVI2 AMD GPU
FEATURES• Dual phase CRC DC/DC controller with integrated drivers dedicated for GPU
core power; and Single phase CRC DC/DC controller with integrated drivers
for Memory power• High efficiency up to 94%; and Integrated boost diodes• Platform-adjustable operating frequency, maximum temperature, overcurrent protection, slew rate, initial load line slope, initial offset, NAS/SKIP
mode through high speed I2C port
• Rail A phase 2 power-on strap option on BSTA2• 0.8% output voltage accuracy• 5V to 25V input voltage; and 8-bit VID code DAC• Output voltage slew rate controlled at start-up, shutdown, and VID-on-thefly (VOTF)• Protection includes: latched over/under-voltage, embedded thermal, andcycle-by-cycle over-current• Smart pulse skipping feature and non-audio skipping (NAS) under lightload conditions• Low bias differential output voltage remote sensing

GENERAL DESCRIPTION

OZ83215 is a highly integrated DC/DC controller for the core (dual phase) andMemory (single phase) rails. Output voltages for both are programmed through ahigh speed serial bus. It supports all required SVI2 functions.
OZ83215 features patented CRC architecture which provides superior staticand dynamic CORE voltage regulation. It also has the ability to send back digitally encoded voltage and current values for GPU core and Memory rails to theprocessor.

APPLICATIONS		APPLICATION DIAGRAM• AMD Notebook GPU Core
and Memory Power Supplies

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; 8,232,784; and more
patents pending.

50

OZ83222 + 2 Phase DC/DC for SVI2 AMD CPU
FEATURES• Dual phase CRC DC/DC controller with integrated drivers for core power;and Dual phase CRC DC/DC controller with external drivers for North Bridge(NB) power• High efficiency up to 94%; and Integrated boost diode for core rail
• Platform-adjustable operating frequency, maximum temperature, overcurrent protection, slew rate, initial load line slope, initial offset, NAS/SKIP
mode through high speed I2C port
• 0.8% output voltage accuracy; and 5V to 25V input voltage• 8-bit VID code DAC• Output voltage slew rate controlled at start-up, shutdown, and VID-on-thefly (VOTF)• Protection includes: latched over/under-voltage, embedded thermal, andcycle-by-cycle over-current• Smart pulse skipping feature and non-audio skipping (NAS) under lightload conditions• Low bias differential output voltage remote sensing

GENERAL DESCRIPTION

OZ8322 is a highly integrated DC/DC controller for the core and NB rails (companion chip to OZ8002). It supports all required SVI2 functions. Both output
voltages are programmed through a high speed serial bus.
OZ8322 features patented CRC architecture which provides superior static anddynamic CORE voltage regulation. A precision reference, remote sensing and
CRC architecture assure high output accuracy for all loads and input/output
voltages.

APPLICATIONS		APPLICATION DIAGRAM• AMD Notebook CPU Coreand NB Power Supplies

U.S. Patent #’s 6,844,710; 6,965,221; 7,098,642; 7,202,650; 7,466,113; 7,598,718; 7,816,896; and more patents pending.

51

OZ8380A

Dual Phase Ultra High Efficiency DC/DC for
AMD SVI Mobile Processors
FEATURES• Two independent Single Phase DC/DC controllers, with integrated drivers,
for AMD CPU core power planes• AMD serial VID code compliant• CRC control method allows designing for optimum inductor size
• Highly efficient power conversion; and light load conversion via smart pulse
skipping mode
• Ultra fast transient recovery; and 1% output voltage accuracy• Supports more than 18A per channel• User-adjustable switching frequency and OCP limit• User-adjustable slew control of VDD_CORE at start-up and OTF VID
code changes• True differential output voltage remote sensing; and Open drain Power
Good signal• Voltage feed-forward compensation• Protection includes: VIN & VDDA under-voltage lockout, latched overvoltage, and cycle-by-cycle over-current

GENERAL DESCRIPTIONOZ8380A is a DC/DC controller specifically developed to support power supply
designs accepting the AMD SVI (Serial Voltage Identification) codes. It incorporates the AMD 7-bit VID table for full range out-put conversion capability
in 12.5mV increments. High efficiency under both light and heavy load conditions, DC accuracy, differential remote voltage sensing and excellent transient
response make OZ8380A the solution of choice for low voltage CPU power
supplies.
OZ8380A’s voltage feed-forward compensation ensures high rejection of input
voltage transients.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
AMD Notebook CPUs

U.S. Patent #’s 6,459,602; 6,472,897; 6,678,178; 6,720,800; 6,813,173; 6,844,710; 6,965,221; 7,002,817; 7,031,174;
7,098,642; 7,202,650; 7,242,598; 7,319,346; 7,436,222; 7,466,113; 7,471,533; 7,589,987; 7,598,718; 7,724,553;
7,816,896; and more patents pending.

52

OZ8384

Dual Phase Ultra High Efficiency DC/DC for
AMD SVI Mobile Processors
FEATURES• Dual Phase DC/DC controller for AMD• Integrated drivers and boost diode• AMD SVI 7-bit VID code compliant• CRC control method allows designing for optimum inductor size
• Highly efficient power conversion up to 94%• Highly efficient light load conversion via smart pulse skipping mode
• Ultra fast transient recovery; and 1% output voltage accuracy• Supports up to 50A output current• User-adjustable switching frequency and Dual OCP limit• User-adjustable slew control of VDD_CORE at start-up and OTF VID codechanges• True differential output voltage remote sensing• Open drain Power Good signal; VR_TTb signal; and Voltage feed-forward
compensation• Protection includes: VIN & VDDA under-voltage lockout, latched overvoltage, and cycle-by-cycle over-current

GENERAL DESCRIPTIONOZ8384 is a DC/DC controller specifically developed to support power supply
designs for AMD SVI (Serial Voltage Identification) mobile microprocessors. It incorporates the AMD 7-bit VID table for full range output conversion capability in
12.5mV increments. High efficiency under both light and heavy load conditions,DC accuracy, remote voltage sensing and excellent transient response make
OZ8384 the solution of choice for low voltage CPU conversion.
OZ8384’s core topology is based on constant-ripple-current (CRC) technology.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
AMD Notebook CPUs

U.S. Patent #’s 6,459,602; 6,472,897; 6,678,178; 6,720,800; 6,813,173; 6,844,710; 6,965,221; 7,002,817; 7,031,174;
7,098,642; 7,202,650; 7,242,598; 7,319,346; 7,436,222; 7,466,113; 7,471,533; 7,589,987; 7,598,718; 7,724,553;
7,816,896; and more patents pending.

53

OZ8390E

Single Phase Ultra High Efficiency DC/DC for
AMD SVI Mobile Processors
FEATURES• Single Phase DC/DC controller with integrated drivers• AMD SVI 7-bit VID compliant• CRC control method allows designing for optimum inductor size
• Highly efficient power conversion (up to 94%)
• Highly efficient light load conversion via smart pulse skipping mode
• Ultra fast transient recovery; and 1% output voltage accuracy• Supports up to 25A output current• User-adjustable switching frequency and dual OCP limit• User-adjustable slew control of Northbridge at start-up and OTF VID
code changes• True differential output voltage remote sensing• Open drain Power Good and VR_TTb signal; and Voltage feed-forward
compensation• Protection includes: VIN & VDDA under-voltage lockout, latched overvoltage, and cycle-by-cycle over-current

GENERAL DESCRIPTIONOZ8390E is a DC/DC controller specifically developed to support power supply
designs for AMD SVI (Serial Voltage Identification) mobile microprocessors. It incorporates the AMD 7-bit VID table for full range output conversion capability in
12.5mV increments. High efficiency under both light and heavy load conditions,DC accuracy, remote voltage sensing and excellent transient response make
OZ8390E the solution of choice for low voltage CPU power supplies.
OZ8390E’s voltage feed-forward compensation ensures high rejection of input
voltage transients.

APPLICATIONS		APPLICATION DIAGRAM• Power Supplies for
AMD Notebook CPUs

U.S. Patent #’s 6,472,897; 6,720,800; 6,844, 710; 6,882,214; 6,965,221; 7,098,642; 7,202,650; 7,319,346; 7,436,222;
7,466,113; 7,598,718; 7,816,896; and more patents pending.

54Company Background
Founded in April 1995, O2Micro® International Limited(NASDAQ: OIIM) designs, develops and markets innovative
power management components for the Computer,
Consumer, Industrial, Automotive and Communications
markets.
O2Micro maintains an extensive portfolio of intellectual
property, and has numerous Trademark Applications and
Copyright Registrations.
The company’s extensive list of customers includes most of
the world’s leading electronics manufacturers.
For additional information, including sales office locations,please visit the O2Micro web site at www.o2micro.com.

Copyright © 2013 by O2Micro. All rights reserved.

PO2WER, the O2Micro logo, O2Micro, Constant-Ripple-Current, and combinations
thereof are registered trademarks of O2Micro.

All other trademarks are the property of their respective owners.

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