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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 123

4-phase monolithic synchronous boost converter delivers 2.5A with output disconnect in a 5mm × 5mm QFN package

David Salerno

Abstract

A 4-phase monolithic synchronous boost converter that delivers 2.5A with output disconnect in a 5mm × 5mm QFN package is described.

Keywords

Monolithic synchronous boost converter

LTC3425

Introduction

The LTC3425 is the industry’s first 4-phase, monolithic synchronous boost converter. It can start up with as little as 1V and operate with inputs up to 4.5V. The output voltage range is 2.4V to 5.25V, making it well suited for battery-powered applications as well as point-of-load regulation in low voltage systems. The 4-phase architecture allows for an effective switching frequency of up to ...

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