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LTC3850-2 Datasheet 2-phase Synchronous Step-down Switching Controller

Manufacturer: Linear Technology (now Analog Devices)

Overview: LTC3850-2 Dual, 2-Phase Synchronous StepDown Switching Controller.

General Description

The LTC®3850-2 is a high performance dual synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages.

A constant-frequency current mode architecture allows a phase-lockable frequency of up to 780kHz.

Power loss and supply noise are minimized by operating the two controller output stages out of phase.

Key Features

  • n Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n High Efficiency: Up to 95% n RSENSE or DCR Current Sensing n ±1% 0.8V Output Voltage Accuracy n Phase-Lockable Fixed Frequency 250kHz to 780kHz n Supports Pre-Biased Output n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4V to 30V Operation n Adjustable Soft-Start Current Ramping or Tracking n Foldback Output Current Limiting n Output Overvoltage Protection n Power Good Output Voltage M.

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