LTC3729L-6

LTC3729L-6 PolyPhase, Synchronous Step-Down Switching Regulator U FEATURES DESCRIPTIO s Reduces Required Input Capacitance and Power Supply Induced Noise s True Remote Sensing Differential Amplifier s 0.6V, ±1% Voltage Reference Accuracy s PolyPhase Controller Operates from Two to Twelve Phases s Current Mode Control Ensures Current Sharing s Phase-Lockable Fixed Frequency: 250kHz to 550kHz s OPTI-LOOP® Compensation Reduces COUT s Power Good Output Voltage Monitor s Wide VIN Range: 4V to 30V Operation s Very Low Dropout Operation: 99% Duty Cycle s Adjustable Soft-Start Current Ramping s Internal Current Foldback Plus Shutdown Timer s Overvoltage Soft-Latch Eliminates Nuisance Trips s Micropower Shutdown s 32-Lead 5mm × 5mm Plastic QFN Package U APPLICATIO S s Desktop Computers s Internet Servers s Large Memory Arrays s DC Power Distribution Systems , LTC and LT are registered trademarks of Linear Technology Corporation. OPTI-LOOP is a registered trademark of Linear Technology Corporation. PolyPhase is a trademark of Linear Technology Corporation. The LTC®3729L-6 is a PolyPhaseTM synchronous stepdown current mode switching regulator controller with a 0.6V reference that drives N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The PolyPhase controller drives its two output stages out of phase at frequencies up to 550kHz to minimize the RMS ripple currents in both input and output capacitors. The output clock signal allows expansion f...