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LTC3869 - 2-Phase Synchronous Step-Down DC/DC Controllers

Description

The LTC®3869 is a high performance dual synchronous step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages.

A constant frequency current mode architecture allows a phaselockable frequency of up to 780kHz.

Features

  • n Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n Accurate Multiphase Current Matching n RSENSE or DCR Current Sensing n ±0.75% 0.6V Output Voltage Accuracy n Phase-Lockable Fixed Frequency 250kHz to 780kHz n High Efficiency: Up to 95% n Dual N-channel MOSFET Synchronous Drive n Wide VIN Range: 4V to 38V (40V Max) Operation n Wide VOUT Range: 0.6V to 12.5V Operation n Adjustable Soft-Start Current Ramping or Tracking n Foldback Output Current Limi.

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Full PDF Text Transcription

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Features n Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n Accurate Multiphase Current Matching n RSENSE or DCR Current Sensing n ±0.75% 0.6V Output Voltage Accuracy n Phase-Lockable Fixed Frequency 250kHz to 780kHz n High Efficiency: Up to 95% n Dual N-channel MOSFET Synchronous Drive n Wide VIN Range: 4V to 38V (40V Max) Operation n Wide VOUT Range: 0.6V to 12.
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