Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators

The 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