Chapter 136

“LCD bias” and “backup supply” applications for a micropower DC/DC converter

Gary Shockey and Jeff Witt

Abstract

The LT1316, a micropower step-up DC/DC converter with peak switch current control, is described.

Keywords

Micropower step-up DC/DC converter

LT1316

LCD bias

Backup

Some step-up DC/DC converter functions require input current limiting because of high source impedance or limited capability of power components. The LT1316, a micropower step-up DC/DC converter with peak switch current control, meets these needs. The device draws 33μA quiescent current and contains a 0.6Ω, 30V switch that can be programmed for a maximum peak current between 30mA and 600mA with an external resistor. It also has a low-battery detector ...

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