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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 285

Reduce the cost and complexity of medium LCD LED backlights with a single inductor LED driver for 60 LEDs

Daniel Chen

Abstract

A single inductor LED driver for 60 LEDs that reduces the cost and complexity of medium LCD display LED backlights is described.

Keywords

LED driver

LCD display backlight

LT3598

Introduction

One inductor, one IC, one string of LEDs. This is the conventional way to build a boost LED driver for LCD display backlights. Although this is a perfectly acceptable solution for small LCD displays that only require a few strings, in larger displays the number of control ICs and inductors multiplies quickly, as do the expense and PCB real estate requirements. This is a major hurdle in the race to replace CCFLs ...

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