FAN7314

FAN7314 — LCD Backlight Inverter Drive IC October 2007 FAN7314 LCD Backlight Inverter Drive IC Features „ High-Efficiency Single-Stage Power Conversion „ Wide Input Voltage Range: 5V to 25.5V „ Back Light Lamp Ballast and Soft Dimming www.DataSheet4U.com „ Reduces Number of Required External Components „ Precision Voltage Reference Trimmed to 2% „ ZVS Half-Bridge Topology „ Soft Start „ PWM Control at Fixed Frequency „ Analog and Burst Dimming Function „ Programmable Striking Frequency „ Open-Lamp Protection „ Open-Lamp Regulation „ 20-Pin SOIC Description The FAN7314 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 CCFL and the transformer's characteristics. 20-SOIC Ordering Information Part Number FAN7314M FAN7314MX Package 20-SOIC 20-SOIC Operating Temperature Range -25°C ~ 85°C Packing Method Rail Tape & Reel All packages are lead free per JEDEC J-SDD-020B standard. Protected by U.S. Patent: 5,652,479. © 2006 Fairchild Semiconductor Corporation FAN7314 Rev. 1.0.4 www.fairchildsemi.com FAN7314 — LCD Backlight Inverter Drive IC Typical Application Circuit Application 19 inch LCD Monitor Lamps 4 Input Voltage 13V 1. Schematic F1 FUSE C22 220μ F 25V C26 R6 OLP OLR RT1 OUTB OUTA C6 S_S GND C2 1μ F REF ADIM R7 0Ω BDIM CT RT BCT R5 C4 27kΩ 4.7nF VIN PGND OUTC OUTD C5 220pF GN ...