LTC3865

LTC3865/LTC3865-1 FEATURES Dual, 2-Phase Synchronous DC/DC Controller with Pin Selectable Outputs DESCRIPTION n Dual, 180° Phased Controllers n 2-Pin VID Output Voltage Programming from 0.6V to 5V n High Efficiency: Up to 95% n RSENSE or DCR Current Sensing n Phase-Lockable Fixed Frequency 250kHz to 770kHz n Adjustable Current Limit n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4.5V to 38V Operation n Adjustable Soft-Start Current Ramping or Tracking n Output OV Protection With Reverse Current Limit n Power Good Output Voltage Monitor n 32-Pin 5mm × 5mm QFN and 38-Lead TSSOP Packages APPLICATIONS n DC Power Distribution Systems L, LT, LTC, LTM, Burst Mode, OPTI-LOOP, μModule, Linear Technology and the Linear logo are registered trademarks and No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6580258. The LTC®3865/LTC3865-1 are high performance dual synchronous step-down DC/DC switching regulator controllers that drive all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 770kHz. Power loss and noise are minimized by operating the two controller output stages out of phase. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. Independent track/soft-...