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FAN7315

LCD Back Light Inverter Drive IC

Fairchild Semiconductor 

FAN7315

LCD Back Light Inverter Drive IC

www.fairchildsemi.com

Features

• Wide Dimming Range

Analog dimming ( 2.5 : 1 )

Burst dimming ( >100 : 1 )

• High Efficiency Single Stage Power Conversion

• Wide Input Voltage Range 7.4V to 20V

• Back Light Lamp Ballast and Soft Dimming

• Few External Components

• Precision Voltage Reference Trimmed to 2%

• ZVS full-bridge topology

• Soft Start

• PWM Control at fixed frequency

• Analog, Burst Dimming Function

• Open Lamp Protection

• Open Lamp Regulation

• Short Lamp Protection

• Thermal Protection

• 20 Pin SSOP

Description

The FAN7315 provides all the control functions for a

series parallel resonant converter and also contains 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-SSOP

©2004 Fairchild Semiconductor Corporation

Rev. 1.0.1

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