Chapter 88

Low dropout 550kHz DC/DC controller operates from inputs as low as 2V

San Hwa Chee

Abstract

The LTC1622, a versatile high efficiency step-down controller that easily meets the size requirements of handheld portable applications with its small MSOP package, is described.

Keywords

Step-down controller

LTC1622

The LTC1622 is a versatile high efficiency step-down controller that easily meets the size requirements of handheld portable applications with its small MSOP package. High frequency of operation (550kHz) allows the use of small magnetics, providing a complete power solution while occupying only a small amount of area. For even smaller magnetics, the LTC1622 can be synchronized up to 750kHz. Its wide operating input voltage ...

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