FAN7311B Datasheet PDF - Fairchild

●Description

●The FAN7311B provides all the control functions for a series parallel resonant converter as well as a pulse width modulation (PWM) controller to develop a supply voltage. Typical operating frequency range is between 30kHz and 250kHz, depending on the cold cathode fluorescent lamp (CCFL) and the transformer"s characteristics. The FAN7311B uses a new patent-pending phase shift control.

●Features

●„High-Efficiency Single-Stage Power Conversion

●„Wide Input Voltage Range: 5V to 25.5V

●„Backlight Lamp Ballast and Soft Dimming

●„Reduced Number of Required External Components

●„Precision Voltage Reference Trimmed to 2%

●„ZVS Full-Bridge Topology

●„Soft-Start Capability

●„PWM Control at Fixed Frequency

●„Analog and Burst Dimming Function

●„Programmable Striking Frequency

●„Open-Lamp Protection

●„Open-Lamp Regulation

●„20-Pin SOIC

●Applications

●„LCD TV

●„LCD Monitor