OZ9932 - O2Micro

OZ9932 LCD Monitor CCFL Inverter Controller

1 2 3 ENA_SST_CMP CT GNDA DRV2 ISEN 8 7 6 5 VSEN_DIM VDDA DRV1 GENERAL DESCRIPTION The patent pending OZ9932 is a cost-effective CCFL (Cold Cathode Fluorescent Lamp) Power Management controller designed for CCFL, Liquid Crystal Display (LCD) applications. The OZ9932 provides two drive signals for most power conversion topologies, such as push-pull, half-bri.

Features

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• Built-in intelligence to ignite positive impedance CCFLs Universal panel interface Enhanced output drive capability Over 200 steps dimming control Low cost LCD TV inverter solution Constant operating frequency Operating frequency can be synchronized with external signal Integrated synchronized PWM dimming control with wide dimming range Built-in intelligence for ignition and normal operation of CCFLs Built-in open-lamp protection and overvoltage protection Optimized soft-start function Shutdown delay for input voltage brownout Supports multiple CCFLs the controller an.