O'Reilly logo

Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 300

White LED driver in tiny SC70 package delivers high efficiency and uniform LED brightness

David Kim

Abstract

The LT1937, a white LED driver optimized for driving two to four LEDs from a Li-Ion battery input, is described.

Keywords

White LED driver

LT1937

Introduction

The LT1937 step-up white LED driver is an ideal solution for small battery-powered portable devices such as cellular phones, PDAs and digital cameras. The LT1937 features an internal 36V switch that is capable of driving up to eight LEDs in series, but it is optimized for Li-Ion powered color display backlight applications that use two to four white LEDs. The LT1937 guarantees a constant light intensity and color in each LED, regardless of differences in their ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required