Dual High Efficiency, Low Noise, Synchronous Step-Down Switching RegulatorsThe LTC1438 LTC1439 are dual, synchronous step-
down Switching Regulator controllers which drive external
N-channel Power MOSFETs in a phase-lockable fixed
frequency architecture. The Adaptive Power
output stage
selectively drives two N-Channel MOSFETs at frequencies
up to 400kHz while reducing switching losses to maintain
high efficiencies at low output currents. By Linear Technology Corporation
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