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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 305

High power CCFL backlight inverter for desktop LCD displays

Jim Williams

Abstract

A high power cold cathode fluorescent lamp (CCFL) backlight inverter for desktop LCD displays is described.

Keywords

LCD display

CCFL backlight inverter

LT1371 switching regulator

Large LCD (liquid crystal display) displays designed to replace CRTs (cathode ray tubes) in desktop computer applications are becoming available. The LCD’s reduced size and power requirements allow much smaller product size, a highly desirable feature.

CRT replacement requires a 10W to 20W inverter to drive the CCFL (cold cathode fluorescent lamp) that illuminates the LCD. Additionally, the inverter must provide the wide dimming range associated with CRTs, and it ...

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