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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 138

Single-cell micropower fixed-frequency DC/DC converter needs no electrolytic capacitors

Steve Pietkiewicz

Abstract

The LT1307 single-cell micropower fixed-frequency DC/DC converter, which needs no electrolytic capacitors, is described.

Keywords

Switching regulator

DC/DC converter

LT1307

Today’s low power boost converter ICs have been rejected by designers of products incorporating RF communications for two reasons. First, the converters use some form of variable-frequency control to maintain acceptable efficiency during periods of light load. Significant spectral energy in the sensitive 455kHz band can occur, introducing difficult interference problems with the system’s IF amplifier. Second, large output capacitors are required ...

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