FAN7311B

FAN7311B LCD Backlight Inverter Drive IC January 2007 FAN7311B LCD Backlight Inverter Drive IC 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 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 phaseshift control. 20-SOIC Applications „ LCD TV „ LCD Monitor www.DataSheet4U.com Ordering Information Part Number FAN7311BM FAN7311BMX Package 20-SOIC 20-SOIC Pb-Free Yes Yes Operating Temperature Range -25°C to 85°C Packing Method Rail Tape & Reel Protected by U.S. Patent: 5,652,479; 7,158,390. © 2007 Fairchild Semiconductor Corporation FAN7311B Rev. 1.0.0 www.fairchildsemi.com FAN7311B LCD Backlight Inverter Drive IC Internal Block Diagram RT max. 2V min. 0.5V 6μA S_S MRT1 OSCILLATOR Output Driver + + Output Control Logic Output Driver Striking Logic OL...