LCD背光逆变器驱动IC LCD Backlight Inverter Drive IC
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