Chapter 291

Drive large TFT-LCD displays with a space-saving triple-output regulator

Jesus Rosales

Abstract

Driving large TFT-LCD displays with a space-saving triple-output regulator is described.

Keywords

TFT-LCD

triple-output regulator

LT3489

Introduction

The power appetite of large TFT-LCDs appears to be insatiable. Power supplies must feed increasing numbers of transistors and improved display resolutions, and do so without taking much space.

The triple output supply shown in Figure 291.1 shows a compact design based on the LT3489, which is optimized for driving large TFT panel displays. The main output provides 8V at 600mA while the 23V and −8V outputs provide 10mA and 20mA respectively, all from a 3.3V input. Even though TFT ...

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