GB98A データシートの表示（PDF） - O2Micro International

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GB98A

Intelligent Lighting Family Product Guide

O2Micro International 

OZ9902

FEATURES

• Dual Channel DC/DC converter

• Constant current or voltage output

• Drives one string of high power LEDs per channel

• 180 degrees phase-shift between the two driver outputs

• Independent PWM dimming control for each channel

• Analog dimming

• Constant operation frequency; and Operation frequency synchronization

• Power MOSFET over-current protection

• Over-voltage protection

• Output to return and Output to ground short-circuit protection

• Output over load protection

• Limited Current Condition (LCC) protection

• Thermal protection

• LED fault status output

GENERAL DESCRIPTION

OZ9902 is a dual, high power LED driver designed to build LED backlight for

large-size LCD TV applications. It integrates two independently-controlled LED

drivers to achieve optimum efficiency. The drive outputs are phase-shifted by

180 degrees to minimize current ripple in high power applications.

OZ9902 supports independent Pulse Width Modulation (PWM) dimming control

for each channel and common analog dimming control for both channels. It

provides system design flexibility for LCD TV with local dimming or 3D

display mode.

APPLICATIONS

APPLICATION DIAGRAM

• LCD Monitor

• LCD TV

U.S. Patent #7,498,793; and more patents pending.

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