O2Micro - Intelligent Lighting

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INTELLIGENT LIGHTING
( OZ9950, OZ9951, OZ9953, OZ9954, OZ9955, OZ9956A, OZ9957, OZ9958, OZ9959, OZ964, OZ9910A, OZ9913, OZ9918, OZ9924, OZ9925, OZ9926, OZ9926A, OZ9928, OZ9935, OZ9936, OZ9937, OZ9938, OZ9939, OZ9970, OZ9921, OZ9922, OZ70, OZ71, OZ72, OZ9982 )

O₂Micro® offers a family of Intelligent Lighting backlight CCFL, EEFL, FFL, and LED controllers ideal for various sizes of LCD display applications such as desktop monitors, televisions, notebooks, global positioning system (GPS), and other mobile applications.

WHITE LED ICs
( OZ9950, OZ9951, OZ9953, OZ9954, OZ9955, OZ9956A, OZ9957, OZ9958, OZ9959 )

FEATURES (OZ9950, OZ9951)

High efficiency DC/DC step up converter controller for white LED drivers
1.8V to 5.5V input voltage range
PWM or Analog dimming control
Over-voltage protection
Soft start
Low standby current
OZ9950: 8 MSOP and SOP packages, lead-free
OZ9951: 8 SOP package, lead-free

FEATURES (OZ9953)

Three string LED controller
High frequency DC/DC power converter for LED backlight applications
Integrated LED current balance control circuit
4V to 25V input voltage range
Up to 1.0MHz switching frequency
Up to 350mA LED current per string
External PWM dimming control
Over-voltage, short circuit, and over-current protection
Soft start
Low standby current
20 SSOP package, lead-free

FEATURES (OZ9954)

Four string LED Controller
High frequency DC/DC power converter for LED backlight application
4V to 40V input voltage range
Integrated LED current balance control circuit
Over-voltage and over load protection
Up to 1MHz switching frequency
Up to 350mA per string
External PWM dimming control
Over-voltage, short circuit, and over-current protection
Soft start
Low standby current
20 SSOP package, lead-free

FEATURES (OZ9955)

Eight string LED controller
High frequency DC/DC power converter for LEDs
Integrated LED current balance control circuit
Integrated power MOSFET
5V to 33V input voltage range
Up to 2.0MHz switching frequency
10mA to 30mA LED current per string
Supports internal or external PWM dimming
Over-voltage and over-current protection
Soft start
Low standby current
28 QFN package, lead-free

FEATURES (OZ9956A)

Six string LED controller
High frequency DC/DC power converter for LEDs
Integrated LED current balance control circuit
Integrated power MOSFET
4V to 25V input voltage range
Up to 2.0MHz switching frequency
10mA to 30mA LED current per string
Supports analog or external PWM dimming
Over-voltage and over-current protection
Soft start
Low standby current
20 QFN package, lead-free

FEATURES (OZ9957)

High frequency DC/DC power converter for white and RGB LEDs
4.5V to 30.0V input voltage range
Up to 600KHz switching frequency
System synchronization
Synchronization for multiple ICs
Drives 1 or more strings
External PWM dimming
Adjustable PWM phase-shift for dimming control
Over-voltage, over-current, and open-lamp protection
Shutdown delay timer
Soft start
Low standby current
16 SOP package, lead-free

FEATURES (OZ9958)

High frequency DC/DC power converter for LEDs
5V to 27V input voltage range
Up to 600KHz switching frequency
Drives up to 20 LEDs in series, 3 strings in parallel
Up to 110mA per string
Analog or external PWM dimming
Over-voltage protection
Over-current protection with delay timer
Soft start
Low standby current
16 QFN and SSOP packages, lead-free

FEATURES (OZ9959)

Six string, SMBus™ LED controller
SMBus version 2.0 compliant
Supports SMBus protocol dimming control
Supports SMBus, DPST™ and SMBus+DPST brightness control modes
256 step dimming control
High frequency DC/DC power converter for LEDs
Integrated LED current balance control circuit
Integrated power MOSFET
Drives up to 6 strings in parallel
Over-current, over-voltage, over temperature protection
Soft start function
20 QFN package, lead-free

CCFL/EEFL INVERTER CONTROLLERS
( OZ964, OZ9910A, OZ9913, OZ9918, OZ9924, OZ9925, OZ9926, OZ9926A, OZ9928, OZ9935, OZ9936, OZ9937, OZ9938, OZ9939, OZ9970 )

FEATURES (OZ964)

High efficiency, zero-voltage switching, full bridge topology
Constant operating frequency
Built-in PWM dimming control with wide dimming range
Soft start function
Built-in intelligence for ignition and normal operation of CCFLs
Built-in open-lamp and over-voltage protection
Shutdown delay for input voltage brownout condition
Supports positive impedance (dark effect) lamps during ignition
Built-in under-voltage lockout protection
Toggle pin to reset the IC after shutdown
20 SOP and SSOP packages, lead-free

FEATURES (OZ9910A)

Controller for high-voltage DC/DC and DC/AC converters
High-efficiency, zero voltage switching dual forward controller
Supports positive impedance (dark effect) lamps during ignition
Feed forward compensation
Combined analog and/or PWM control modes for wide-range load regulation
Supports wide input voltage range
Constant operating frequency
Soft start function
Built-in open-load, over-voltage, and over-current protection
Built-in under-voltage lockout function
Shutdown delay timer
16 SOP and TSSOP packages, lead-free

FEATURES (OZ9913)

Wide input voltage range: 4.5V ~ 25V
Phase shifted full bridge driving topology
VIN feed-forward compensation for driver output overlap ratio
Built-in high side power MOSFET driver
Supports both internal and external PWM dimming
Adjustable PWM dimming polarity
Closed loop over-voltage protection
Striking and open-lamp protection
Shutdown delay timer
20 SOP and SSOP packages, lead-free

FEATURES (OZ9918)

SMBus™ version 1.1 compliant
Supports SMBus protocol dimming control
Supports ALS, ALS+DPST™, SMBus, DPST and SMBus + DPST brightness modes
256 step dimming control
Wide input range
Constant operating frequency
Soft start function
Built-in intelligence to manage ignition and normal operation of CCFLs
Built-in open-lamp and over-voltage/over-current protection
User-defined striking timer and shutdown delay timer
Integrated high-side N MOSFET driver
High drive capability
24 SSOP package, lead-free

FEATURES (OZ9924)

High efficiency, zero-voltage switching
Constant operating frequency
Built-in PWM dimming control with wide dimming range
Soft start function
Built-in intelligence for ignition and normal operation of CCFLs
Built-in open-lamp and over-voltage protection
Shutdown delay for input voltage brownout condition
Supports positive impedance (dark effect) lamps during ignition
Built-in under-voltage lockout protection
Toggle pin to reset the IC after shutdown
20 SOP and SSOP packages, lead-free

FEATURES (OZ9925)

Supports off-line applications
Constant operating frequency
Support positive impedance (dark effect) lamps during ignition
Combined analog and PWM dimming control with wide dimming range
Built-in intelligence for ignition and normal operation of CCFLs
Built-in open-lamp and over-voltage/current protection
Optimized soft start function
16 SOP package, lead-free

FEATURES (OZ9926)

Full-bridge or dual-forward topology
Integrated high-side N MOSFET driver
High drive capability
System synchronization
Synchronization for multiple ICs
Supports Limited Current Circuit (LCC)
Dedicated pins for Analog and LPWM dimming
Selectable PWM dimming polarity
Soft start function
Constant operating frequency
Built-in intelligence to manage ignition and normal operation of CCFLs
Open-lamp, over-voltage, over-current, and under-voltage lockout protection
User-defined striking and shutdown delay timers
24 SSOP package, lead-free

FEATURES (OZ9926A)

VREF and SYNC-RPT noise immunity and lamp current symmetry for start-up
Full-bridge or dual-forward topology
Integrated high-side N MOSFET driver
High drive capability
System synchronization
Synchronization for multiple ICs
Supports Limited Current Circuit (LCC)
Dedicated pins for Analog and LPWM dimming
Selectable PWM dimming polarity
Soft start function
Constant operating frequency
Built-in intelligence to manage ignition and normal operation of CCFLs
Open-lamp, over-voltage, over-current, and under-voltage lockout protection
User-defined striking and shutdown delay timers
24 SOP and SSOP packages, lead-free

FEATURES (OZ9928)

Dual CCFL inverter controller
Synchronization for multiple ICs
Supports differential drive
180 degree phase-shift PWM dimming
Mixed-mode dimming control
Selectable shutdown protection mode
User-defined ignition and shutdown delay timers
Built-in intelligence for ignition and normal operation of CCFLs
Built-in open-lamp and over-voltage protection
Integrated high-side N MOSFET driver
High drive capability
Supports wide input range and system synchronization
Constant operating frequency
30 SSOP package, lead-free

FEATURES (OZ9935)

VSYNC synchronization for LPWM dimming frequency
Independent PWM and analog dimming control
Supports positive impedance (dark effect) lamps during ignition
Constant operating frequency
Built-in intelligence for ignition and normal operation of CCFLs
User-defined ignition and shutdown delay timers
Built-in open-lamp and over-voltage protection
Optimized soft start function
16 SOP package, lead-free

FEATURES (OZ9936)

Low cost LCD monitor inverter solution
Constant operating frequency
Supports positive impedance (dark effect) lamps during ignition
Built-in intelligence for ignition and normal operation of CCFLs
Built-in striking and shutdown delay timer
Built-in open-lamp and over-voltage protection
Optimized soft start function
Supports both analog and external PWM dimming control
8 PDIP and SOP packages, lead-free

FEATURES (OZ9937)

Universal LCDM CCFL Inverter
Supports positive impedance (dark effect) lamps during ignition
Independent PWM and analog dimming control
Operating frequency compensation
User-defined PWM dimming frequency
User-defined striking and normal operating frequency
Built-in open-lamp and over-voltage protection
User-defined ignition and shutdown delay timers
Optimized soft start function
16 SOP package, lead-free

FEATURES (OZ9938, OZ9939)

PWM dimming polarity
- OZ9938: Positive
- OZ9939: Negative
Constant operating frequency
Supports positive impedance (dark effect) lamps during ignition
User-defined ignition and shutdown delay timers
Multiple mode dimming control
Built-in intelligence for ignition and normal operation of CCFLs
Built-in open-lamp and over-voltage protection for backlight system
Optimized soft start function
16 DIP and SOP packages, lead-free

FEATURES (OZ9970)

Positive PWM dimming polarity
Constant operating frequency
Drives positive/negative impedance lamps during ignition
High drive current for external MOSFETs
User-defined ignition and shutdown delay timers
Multiple mode dimming control
Built-in intelligence for ignition and normal operation of CCFLs
Built-in open-lamp and over-voltage protection for backlight system
Optimized soft start function
16 SOP package, lead-free

POWER MANAGEMENT ICs ( OZ9921, OZ9922 )

FEATURES (OZ9921)

Five channel DC/DC controller
Main Buck Converter
Second Buck Converter
Boost Converter
Second Boost Converter
Buck-Boost Converter
Over load protection
Soft start function
Over-voltage and over-current protection
28 QFN and SOP packages, lead-free

FEATURES (OZ9922)

Integrated LCD panel power management controller
Input voltage range: 6V to 27V
DC/AC inverter controller
Main Buck Converter
Second Buck Converter
Three general purpose user-configurable Boost Converters and/or Buck-Boost converters
Over-voltage and over load protection
Soft start
48 LQFP package, lead-free

LIGHT SENSORS ( OZ70, OZ71, OZ72 )

FEATURES (OZ70/71BG/72R)

Monolithic IC consisting of photodiode and current amplifier
Supply voltage range: 3.3V to 5.5V
Wide dynamic range
Low standby current
Linear output light source
1206 SMD package, lead-free

MOSFET DRIVERS ( OZ9982 )

FEATURES (OZ9982)

High peak output current
Optimized Break-Before-Make (BBM)
38V floating capability of BST pin
Ultra Low current consumption in disable state
16 SOP package, lead-free

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