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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 121

Compact step-up converter conserves battery power

Mike Shriver

Abstract

The LT3464, which is an ideal choice for portable devices which require a tiny, efficient and rugged step-up converter, is described.

Keywords

Step-up converter

LT3464

Introduction

The LT3464 is an ideal choice for portable devices which require a tiny, efficient and rugged step-up converter. The device, housed in a low profile (1mm) 8-lead ThinSOT package, integrates a Schottky diode, NPN main switch and PNP output disconnect switch. For light load efficiency, Burst Mode operation is used to deliver power to the load. This results in high efficiency and minimal battery current draw over a broad range of load current. Quiescent current is only 25μA. ...

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