2

Mobile Communications
Product Guide
Part
NumberDescription

Package(s)Available(Lead-free)

Page
No.

Power Management ICs
OZ8070A

USB Protection IC and Battery Charger

20 QFN7

OZ8618Battery Charge Controller with Power Selector

24 QFN8

OZ8681

SMBus Level 2 Battery Charger

16 QFN9

OZ8682SMBus Level 2 Battery Charger with Hybrid
Power Boost

16 QFN10

OZ8770/1

Cool Charge® with Adapter Power Recognition
Function

24 QFN11

OZ8778Cool Charge® Controller with Controlled
Adapter Power

24 QFN

12

OZ8806

Monitor + High Accuracy Coulomb Counter

10 DFN

13

OZ522

Charger + DC/DC PMU

20 SSOP

14

DC/DC Converter Controllers

3

OZ8033

3A Low Dropout Linear Regulator

8 E-SOP

15

OZ8013

3A Synchronous DC/DC Regulator

16 QFN16

OZ8111

Ultra High Efficiency DC/DC

16 QFN17

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

16 QFN/
24 QFN18

OZ8150Single Ultra High Efficiency DC/DC
with 5V Regulator and Switch-Over

16 QFN19

OZ8153

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

24 QFN20

OZ8155

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

28 QFN21

OZ812

DDR/DDR2/DDR3 Integrated
Power Supply

24 QFN22

OZ838

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

32 QFN23

OZ8380A

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

32 QFN24

Mobile Communications
Product Guide
Package(s)Available(Lead-free)

Page
No.

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

24 and 28 QFN25

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

20 and 24 QFN26

OZ8290Precision DC/DC for Intel® CPU

32 QFN27

OZ8291

Precision DC/DC, IMVP-6+ Compliant

32 QFN28

OZ8292

Precision DC/DC, IMVP-6+ and 6.5
Compliant

40 QFN29

OZ8296

1 + 1 Phase DC/DC for Intel CPU

32 QFN30

OZ82932 + 1 Phase DC/DC for Intel CPU

40 QFN31

OZ83212 + 1 Phase DC/DC for AMD CPU

40 QFN32

OZ83222 + 2 Phase DC/DC for AMD CPU

40 QFN33

OZ8002

Dual Channel MOSFET Driver

16 QFN

34

Part
NumberDescription

DC/DC Converter Controllers (cont.)
OZ838E

LED Backlight Controller ICs for Small-size LCD Panels
OZ521

Boost Converter Controller

8 E-SOP and SOP

35

OZ532

Compact LED Driver

8 DFN

36

OZ9956B Six String LED Controller

20 QFN37

OZ9956E Six String LED Driver Controller

20 QFN38

OZ9960High Power LED Controller

12 DFN, 16 SSOP

39

OZ9979Six String LED Controller with Phase-Shift 20 QFN
Dimming, Internal MOSFET40

OZ9993

Low Cost White LED Controller

41

SOT23-6L

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

4

OZ523

Step Down DC/DC Converter

8 SOP

42

OZ524

Step Down 3A DC/DC Converter

8 E-SOP43

Mobile Communications
Product Guide
Part
NumberDescription

Package(s) Available(Lead-free)

Page
No.

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

5

OZ526

White LED Controller

12 DFN44

OZ527

Automotive GPS LED Controller

24 E-TSSOP, QFN

45

OZ528

LCD Bias Supply Controller

28 E-TSSOP, QFN,
SOP

46

OZ9960High Power LED Controller

12 DFN, 16 SSOP

39

OZ9961Six String LED Controller

20 E-TSSOP, SSOP47

OZ9965

LED Controller + 2 – DC/DC

28 E-TSSOP

48

OZ9990

Four String, High Power, Buck/Boost
LED Driver

24 E-TSSOP49

OZ9993

Low Cost White LED Controller

SOT23-6L

41

OZ9998A

Eight String, High Power LED Controller 24 E-TSSOP, QFN,
SOP

50

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

PRODUCTS
O2Micro’s Intelligent Power for Mobile Communications solutions
empower Power Management, DC/DC Converter Controller andLighting IC products.
Power Management ICs include
highly integrated, mixed signal Battery
Chargers, Battery Monitors, and DC/
DC Converter Controllers designed toprovide next generation, safe battery
management.
DC/DC Converter Controller ICs are driven by Constant-RippleCurrent® technology, and are specially developed to design highefficiency power supplies.
Lighting ICs are part of the Intelligent Lighting family that include highly
efficient backlight solutions for mobile communications applications.

6

OZ8070A

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; and USB 2.0 compliant• 0.5A charging current when powered from USB 2.0 hub(up to 0.96A capability from AC adapter)• Protection includes: input over‑voltage (6V) and under-voltage (4V), charger
over-voltage, and thermal trip point 150oC• Microcontroller controlled input current limits• VIN from 4.0V to 5.5V in operation• Withstands up to 16V input voltage surge• Supports battery voltage up to 8.8V
• Final charging voltage (CV mode) settable in the range of 8.0V to 8.8V
• Adjustable frequency from 500kHz to 2MHz

GENERAL DESCRIPTION
OZ8070A is a USB 2.0 compliant power IC assuring 2 cell Lithium Ion (Li-Ion)battery charging; and protection of both the battery and USB upstream anddownstream power bus.
When OZ8070A is connected to a USB port and not enabled, it takes, at most,
300µA. Once enabled, it wakes up and limits the current taken from the USB
port at the set limit. Then the guest system’s controller performs the handshakewith the host, and sets the current limit by correspondingly asserting the digitalcommand 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.

7

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; and more patents pending.

8

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. It is intended to be used as a smart battery charger (SBC)
within a smart battery system (SBS). It provides complete battery charging control for single battery portable computer systems.
OZ8681 use two high-side current sensors. When charging with the system ON,
OZ8681 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; and more patents pending.

9

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.

10

OZ8770/1

Cool Charge with Adapter Power Recognition®

FEATURES• Supports Intel® AMPS hybrid power topology for Li-Ion batteries• Provides 0.7% accuracy in constant voltage (CV) charge mode
• Automatic AC adapter detection• Analog inputs to program charging current, charging voltage, maximum
adapter power, and wake-up threshold• Dynamic AC adapter power allocation for maximum charge rate
• Power-saving mode available when system is battery powered• Digital and analog or digital wake-up current function• Wake-up current internally set• Battery current information• Integrated power selector for single battery systems• Protection for adapter wire control connection failure• Battery over‑voltage and over-current protection• Safely manages power emergencies to assure system power integrity• Easy interface with a microcontroller

GENERAL DESCRIPTIONOZ8770/1 is an adapter controller for single Li-Ion battery systems. It provides
complete adapter control for single battery portable electronic devices, as wellas the selection of power source and charging path by driving P-channel power
MOSFET switches.
OZ8770/1 uses two high-side current sensors. One current sensor measures
the AC adapter current; the other one measures the charging current. When theadapter power limit is reached during charging, OZ8770/1 dynamically reduces
the charging current in order to keep the adapter power below the limit, while
continuing to supply the requested system current.

APPLICATIONS		APPLICATION DIAGRAM• Notebook Computer andother Portable Electronic
Devices

U.S. Patent #’s 6,246,215; 6,326,771; 6,472,897; 6,720,800; 6,741,066; 6,882,214; 7,088,076; 7,126,241; 7,319,346;
7,436,222; 7,622,830; 7,719,236; 7,777,463; 7,994,660; 8,049,471; and more patents pending.

11

OZ8778

Cool Charge® Controller with
Controlled Adapter PowerFEATURES• Supports Intel® AMPS topology for Li-Ion batteries with O2Micro’s Cool
Charge® Technology• Charges Li-Ion batteries with 2, 3, and 4 cells• Provides ±0.5% constant voltage and ±2.5% charging current accuracies• Supports hybrid power mode
• Programmable wake-up current and power dissipated on battery switch• Outputs battery current and adapter power information• Analog inputs to program charging current, charging voltage, and wake-up
voltage threshold• Supports battery conditioning mode (learning mode) with the “Smart Guy
feature”• Dynamic AC adapter power allocation for maximum charge rate
• Power-saving mode when powered by battery• Integrated power source selector for single battery systems• Automatic AC adapter presence detection• Protection includes: programmable adapter over-voltage, battery
over‑voltage and over-current, and adapter control wire connection failure• Safely manages power emergencies to assure system power integrity• Easy interface with a microcontroller

GENERAL DESCRIPTIONOZ8778 is a highly integrated, battery Cool Charge controller for single Li-Ion
battery portable electronic devices. It uses O2Micro’s Cool Charge topology toremove the standard charger block from traditional battery charger architecture.
OZ8778 uses two high-side current sensors – one detects the AC adapter current, the other the charging current. When the programmed adapter power control level is reached during charging, OZ8778 dynamically reduces the charging
current to keep the adapter power below the limit, while continuing to supply
the system current requested.

APPLICATIONS		APPLICATION DIAGRAM• Notebook Computer andother Portable Electronic
Devices

U.S. Patent #’s 6,741,066; 7,088,076; and more patents pending.

12

OZ8806

Monitor + High Accuracy Coulomb Counter
FEATURES• Efficient Smart Phone battery monitor and high accuracy Coulomb Counterfor 1-2 cell batteries• Monitors:- Battery voltage- Temperature- Current for coulomb counting and battery gauge• Resides in either the Host or the 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 works either in the battery packor 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 is accomplished through a separate voltage-sense input. Two GPIOs may be used todetect battery temperature or for other purposes.

APPLICATIONS		APPLICATION DIAGRAM• Netbook Computer• Tablet• Smart Phone• PDA• Cell Phone• Handheld Rechargeable
Battery

U.S. Patent #’s 6,744,394; 7,095,211; 7,161,520; 7,196,652; 7,218,083; 7,557,540; and more patents pending.

13

OZ522
Charger + DC/DC PMUFEATURES
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 provides a complete charging algorithm to control 1 – 4 cell Li-Ion
batteries, used in Portable DVD (PDVD), 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 with 1% accuracy. A battery temperature sensing scheme
allows the battery to be charged within a user-defined temperature range. The
switch mode charger 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.

14

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, and Over-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.

15

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.

16

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.

17

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 therange 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 andPeripherals• 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.

18

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• 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 ; and Power 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.

19

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 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 load current up to 15A• 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-voltage 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.

20

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, andgraphics 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.

21

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 Memory

U.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.

22

OZ838Dual Phase Ultra High Efficiency DC/DC for AMD
Mobile Processors
FEATURES• Two independent Single Phase DC/DC controllers for AMD CPU core power
planes• Supports plane strapping (dual phase configuration)• Integrated drivers; and 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 up to 36A output current (18A per phase)• User-adjustable switching frequency and 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; and Voltage feed-forward compensation• Protection includes: VIN & VDDA under-voltage lockout; latched overvoltage; and cycle-by-cycle over-current

GENERAL DESCRIPTIONOZ838 is a DC/DC controller specifically developed to support power supply
designs accepting the AMD Serial VID codes. 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 OZ838 the solution of choice forlow voltage CPU power supplies.
OZ838’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 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; 7,598,718; 7,589,987; 7,724,553;
7,816,896; and more patents pending.

23

OZ8380A

Dual Phase Ultra High Efficiency DC/DC
for AMD 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 codechanges• True differential output voltage remote sensing; and Open drain Power Goodsignal• 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 Serial VID codes. It incorporates the AMD 7-bit VID
table for full range output conversion capability in 12.5mV increments. Highefficiency under both light and heavy load conditions, DC accuracy, differential
remote voltage sensing and excellent transient response make OZ8380A thesolution 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.

24

OZ838E

Dual Phase Ultra High Efficiency DC/DC
for AMD 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 code changes• 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 DESCRIPTIONOZ838E is a DC/DC controller specifically developed to support power supply
designs for peripherals of future 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 lightand heavy load conditions, DC accuracy, remote voltage sensing and excellent
transient response make OZ838E the solution of choice for low voltage CPU
power supplies.
OZ838E’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 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.

25

OZ8390E

Single Phase Ultra High Efficiency DC/DC
for AMD 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 codechanges• 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 peripherals of future 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 lightand 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.

26

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 VIDchanges• 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 light loadconditions• 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 ULV Microprocessor
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.

27

OZ8291

Precision DC/DC, IMVP-6+ 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 VIDchanges• 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 light loadconditions• 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 IMVP-6+ 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 ULV Microprocessor
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.

28

OZ8292

Precision DC/DC, IMVP-6+ and 6.5 Compliant
FEATURES• Dual phase controller for Low Voltage (LV) and Ultra Low Voltage (ULV) IntelCPUs• 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-adjustable bootvoltage• Output voltage slew rate controlled at start-up, shutdown, and during VIDchanges• 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 light loadconditions• 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 IMVP-6 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 ULV Microprocessor
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.

29

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 VIDchanges• Protection includes: latched over-voltage, embedded thermal, and cycle-bycycle over-current• Smart pulse skipping feature and non-audio skipping (NAS) under light loadconditions• User-adjustable load line slope for each rail

GENERAL DESCRIPTIONOZ8296 is a single phase, highly integrated DC/DC controller with integrated
drivers for the core and GFX rails. It supports all required IMVP-7/VR12 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; and more patents pending.

30

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 VIDchanges• Protection includes: latched over-voltage, embedded thermal, and cycle-bycycle over-current• Smart pulse skipping feature and non-audio skipping (NAS) under light loadconditions• User-adjustable load line slope for each rail

GENERAL DESCRIPTIONOZ8296 is a highly integrated DC/DC controller with integrated drivers for thecore (dual phase) and GFX (single phase) rails. It supports all required IMVP-7/
VR12 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; and more patents pending.

31

OZ83212 + 1 Phase DC/DC for AMD CPU
FEATURES• Dual phase CRC DC/DC controller with integrated drivers for core power;and Single phase CRC DC/DC controller with integrated drivers for North
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; 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 light loadconditions• 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. It supports all required SV12 functions. Both output voltages
are programmed through a high speed serial bus.
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; and more patents pending.

32

OZ83222 + 2 Phase DC/DC for 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 light loadconditions• 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 SV12 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
Core and 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.

33

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.

34

APPLICATION DIAGRAMOZ521

Boost Converter Controller
FEATURES• Supports wide-range operating voltage• Integrated with a 50V/2A, 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 integrates a 50V/2A MOSFET as theswitch and compensation components for the boost converter to optimize thecost/performance of applications.
In applications, the operating frequency is user-selectable.

APPLICATIONS		• LED Lighting• Tablet• Cell Phone

Patents pending.

35

APPLICATION DIAGRAMOZ532Compact LED Driver
FEATURES• High efficiency controller for boost converter• Supports single-cell Li-Ion battery operation• Drives up to 10 LEDs in series• Integrated power MOSFET• Integrated load-disconnection switch• Supports 100:1 analog dimming ratio• Self-adaptive operating frequency, optimizing efficiency• 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 DESCRIPTIONOZ532 is a controller designed for boost converter LED driver applications. It
integrates a power MOSFET and drives single-string LEDs in applications.
OZ532 provides a compact solution to the applications that require minimum
components for the boost regulator. It is suitable for portable device applications requiring a single-cell Li-Ion battery.
This IC accepts an external Pulse Width Modulation (PWM) signal to perform
dimming control.

APPLICATIONS		• LED Lighting• Tablet• Cell Phone

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

36

APPLICATION DIAGRAM

OZ9956B

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

GENERAL DESCRIPTIONThe OZ9956B is a high efficiency, DC/DC controller that drives up to six (6)strings of LEDs in parallel configuration, with multiple LEDs in each string connected in series. 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.

37

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 to perform 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.

38

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 (Personal
Navigation Device)

Patents pending.

39

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 functioning 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; and more patents pending.

40

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 solutionthat requires minimum components for the boost regulator and is suitable forapplications 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.

41

OZ523

Step Down DC/DC Converter
FEATURES• Supports constant voltage or constant current• 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 is a non-synchronous step down DC/DC converter with a 0.25Ω integrated MOSFET and 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.
OZ523 can also operate in constant current mode to drive high power LED applications.

APPLICATIONS		• General Purpose DC/DC
Converter

Patents pending.

42

APPLICATION DIAGRAMOZ524

Step Down 3A DC/DC Converter
FEATURES• Supports constant voltage or constant current• 3.0A continuous output current• 0.15Ω 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 is a non-synchronous step down DC/DC converter with a 0.25Ω integrated MOSFET and supports a 3.0A 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.
OZ524 can also operate in constant current mode to drive high power LED applications.

APPLICATIONS		• General Purpose DC/DC
Converter

Patents pending.

43

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.

44

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 DIAGRAM• GPS

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

45

OZ528LCD Bias Supply Controller
FEATURES• 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.

46

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 functioning 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.

47

OZ9965

LED Controller + 2 – DC/DCFEATURES• 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-load
protection• 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.

48

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 backlight reliability. 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.

49

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 is a high efficiency, DC/DC controller that drives up to eight (8) stringsof LEDs connected in parallel configuration, with multiple LEDs in each string
connected in series. It provides eight (8) LED current sense inputs in an “OR”
configuration to improve backlight reliability. This allows the backlight to remainfunctioning in the event that any string (s) is damaged during normal operation.
OZ9998A supports external Pulse Width Modulation (PWM) dimming control.
Plus, it provides an integrated circuit to balance the current flow through each
LED string.

APPLICATIONS		APPLICATION DIAGRAM• LCD Monitor• LCD TV

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

50Company Background
Founded in April 1995, O2Micro® International Limited (NASDAQ:
OIIM) designs, develops and markets innovative power
management and e-commerce components for the Computer,
Consumer, Industrial/Automotive, and Communications markets.

O2Micro maintains an extensive portfolio of intellectual property, andhas numerous Trademark Applications and Copyright Registrations.

The company’s extensive list of customers includes many of theworld’s leading electronics manufacturers.

For additional information, including sales office locations, please
visit the O2Micro web site at www.o2micro.com.

Copyright © 2012-13 by O2Micro. All rights reserved.
PO2WER, the O2Micro logo, O2Micro, Cool Charge, Constant-Ripple-Current,
and combinations thereof are registered trademarks of O2Micro.
All other trademarks are the property of their respective owners.

51

R-101212