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LTC3727A-1 - 2-Phase Synchronous Step-Down Switching Regulators

General Description

The LTC®3727A-1 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages.

A constant frequency current mode architecture allows phase-lockable frequency of up to 550kHz.

Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase.

Key Features

  • n Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 14V n Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n OPTI-LOOP® Compensation Minimizes COUT n ±1% Output Voltage Accuracy n Power Good Output Voltage Monitor n Phase-Lockable Fixed Frequency 250kHz to 550kHz n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4V to 36V Operation n Very Low Dropout Operation: 99% Duty Cycle n Adjustable Soft-Start Current Ramping n Foldback Output Current Limiting n Ou.