OZ965IR - ETC

OZ965IR High-Efficiency Inverter Controller

The OZ965 is a single chip, high-efficiency, Cold Cathode Fluorescent Lamp (CCFL) backlight inverter controller whose primary function is to convert +5 volt DC power to approximately 600 VAC. Additionally, the OZ965 performs the lamp Figure 1. Typical Application Circuit J1 5V 5V ENA DIM GND GND 1 2 3 4 5 6 100k R1 C2 22u C1 0.1u R3 150k C3 10u R4 20k R5 15.

Features

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• Single-stage power conversion, requiring only a +5 V voltage source Reduces the number of components and board size by 30% compared with conventional design Supports both floating and grounded secondary designs 90% efficiency vs. typical 75% efficiency of conventional designs Internal open-lamp and short-circuit protections Wide dimming range Supports multiple CCFLs Simple and reliable 2-winding transformer design Eliminates leakage current when used in a floating secondary design Constant-frequency design eliminates interference with LCDs dimming function with an analog vo.