SC198 - Semtech

SC198 Dual DC-DC Buck Converter

The SC198 is a high-efficiency, dual synchronous buck converter designed for use in low power applications. Each converter is capable of supplying up to 600mA of average current at one of eight programmable output voltages commonly used as microprocessor supply voltages. The SC198 uses a single control logic block for the two converters, but their controls ca.

Features

Dual buck converters with independent control High efficiency - over 90% peak 8 programmable output voltages Input voltage range between 2.7V to 5.5V Fixed-frequency operation - 1MHz Optional SYNC clock input Optional power-save under light-load conditions Shutdown current <1μA Soft-start to limit in-rush current 4mm x 4mm MLPQ package Applications Mobile phones Cordless phones MP3 players Digital cameras PDAs Single li-ion cell or (3) NiMH/NiCd cell devices Digital multimedia broadcast (DMB) devices Portable gaming systems Typical Application Circuit SC198 LXA VOUTA GNDA 1 18 15 10μF VINA .