Description

The FAN7319 is a LCD backlight inverter drive IC that controls N-N push-pull topology or N-N full-bridge topology using a proprietary phase-shift method.

The FAN7319 provides a low-cost solution and reduces external components by integrating full-wave rectifiers for open-lamp protection and regulation. The operating voltage range is wide, so an external regulator isn’t necessary to supply voltage to the IC.

Features

■ High-Efficiency Single-Stage Power Conversion

■ Wide Input Voltage Range: 10V to 24V

■ Backlight Lamp Ballast and Soft Dimming

■ Minimal Required External Components

■ Precision Voltage Reference Trimmed to 2

■ ZVS or ZCS Push-Pull & Full-Bridge Topology

■ PWM Control at Fixed Frequency

■ ZCS Control by Sensing Resonant Tank Current

■ External Pulse Burst Dimming Function - Positive

■ Analog Dimming Function - Positive

■ Programmable Striking Frequency

■ Open-Lamp Protection

■ Open-Lamp Regulation

■ Short-Lamp Protection

■ CMP-High Protection

■ Dynamic Contrast Ratio Mode

■ Thermal Shutdown

■ 20-Pin SOP

Applications

■ LCD TV

■ LCD Monitor