LTC3856 - Linear Technology

LTC3856 2-Phase Synchronous Step-Down DC/DC Controller

The LTC®3856 is a single output, dual channel PolyPhase synchronous step-down DC/DC controller that drives all N-channel power MOSFET stages. This device includes a high speed differential amplifier for remote output voltage sense. Power loss and supply noise are minimized by operating the two controller output stages out-of-phase and up to 12-phase operatio.

Features

n PolyPhase® Controller Reduces Input and Output Capacitance and Power Supply Induced Noise n Wide VIN Range: 4.5V to 38V Operation n ±0.75%, 0.6V Reference Voltage Accuracy n High Efficiency: Up to 95% n Programmable Burst Mode® Operation or Stage Shedding™ for Highest Light Load Efficiency n Active Voltage Positioning (AVP) n RSENSE or DCR Current Sensing n Programmable DCR Temperature Compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz n True Remote Sense Differential Amplifier n Dual N-Channel MOSFET Synchronous Drive n VOUT Range: 0.6V to 5V without Differential Amplifier n VO.