LTC3861

LTC3861 Features Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing Description n Operates with Power Blocks, DrMOS or External Gate Drivers and MOSFETs n Constant-Frequency Voltage Mode Control with Accurate Current Sharing n ±0.75% 0.6V Voltage Reference n Dual Differential Output Voltage Sense Amplifiers n Multiphase Capability—Up to 12-Phase Operation n Programmable Current Limit n Safely Powers a Prebiased Load n Programmable or PLL-Synchronizable Switching Frequency Up to 2.25MHz n Lossless Current Sensing Using Inductor DCR or Precision Current Sensing with Sense Resistor n VCC Range: 3V to 5.5V n VIN Range: 3V to 24V n Power Good Output Voltage Monitor n Output Voltage Tracking Capability n Programmable Soft-Start n Available in a 36-Pin 5mm × 6mm QFN Package Applications n High Current Distributed Power Systems n DSP, FPGA and ASIC Supplies n Datacom and Telecom Systems n Industrial Power Supplies L, LT, LTC, LTM, PolyPhase, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6144194, 5055767 The LTC®3861 is a dual PolyPhase® synchronous stepdown switching regulator controller for high current distributed power systems, digital signal processors, and other telecom and industrial DC/DC power supplies. It uses a constant-frequency voltage mode architecture combined...