LTC3853

LTC3853 Triple Output, Multiphase Synchronous Step-Down Controller FEATURES DESCRIPTION n Triple, 120° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n Configurable as a 180° Dual Phase Controller Plus a Single Phase Controller n The Third Phase Can Regulate Up to a 13.5V Output n High Efficiency: Up to 92% n RSENSE or DCR Current Sensing n ±0.75% 0.8V Output Voltage Accuracy n Phase-Lockable Fixed Frequency 250kHz to 750kHz n Supports Pre-Biased Outputs n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4.5V to 24V Operation (28V Abs Max) n Adjustable Soft-Start Current Ramping or Tracking n Foldback Output Current Limiting n Output Overvoltage Protection n Dual Power Good Output Voltage Monitors n 40-Lead 6mm × 6mm QFN Package L, LT, LTC, LTM, Linear Technology, Burst Mode, Polyphase 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 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6580258. The LTC®3853 is a high performance triple output stepdown switching regulator controller that drives all Nchannel synchronous power MOSFET stages. Power loss and supply noise are minimized by operating the output stages out of phase. The part can be configured as a dual phase controller plus a single phase controller if needed. The part can also be configured to provide a single 3-phase output ...