FAN7311 LCD Backlight Inverter Drive IC
May 2005
FAN7311
LCD Backlight Inverter Drive IC
Features
鈥?High-Efficiency Single-Stage Power Conversion
鈥?Wide Input Voltage Range : 5V to 25.5V
鈥?Back Light Lamp Ballast and Soft Dimming
鈥?Reduces Number of Required External Components
鈥?Precision Voltage Reference Trimmed to 2%
鈥?ZVS Full-Bridge Topology
鈥?Soft Start
鈥?PWM Control at Fixed Frequency
鈥?Analog and Burst Dimming Function
鈥?Programmable Striking Frequency
鈥?Open Lamp Protection
鈥?Open Lamp Regulation
鈥?20-Pin SSOP
Description
The FAN7311 provides all the control functions for a
series parallel resonant converter as well as a pulse width mod-
ulation (PWM) controller to develop a supply voltage. Typical
operating frequency range is between 30kHz and 250kHz,
depending on the CCFL and the transformer's characteristics.
The FAN7311 uses a new patent-pending phase-shift control.
20-SSOP
1
漏2005 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
FAN7311 Rev. 1.0.0