LTC3633A-3

FEATURES n 3.6V to 20V Input Voltage Range n 3A Output Current per Channel n Up to 95% Efficiency n Low Duty Cycle Operation: 5% at 2.25MHz n Selectable 0°/180° Phase Shift Between Channels n Adjustable Switching Frequency: 500kHz to 4MHz n External Frequency Synchronization n Current Mode Operation for Excellent Line and Load Transient Response n 0.6V Reference Allows Low Output Voltages n User Selectable Burst Mode® Operation or Forced Continuous Operation n Output Voltage Tracking and Soft-Start Capability n Short-Circuit Protected n Overvoltage Input and Overtemperature Protection n Power Good Status Outputs n Available in (4mm × 5mm) QFN-28 and 28-Lead TSSOP Packages APPLICATIONS n Distributed Power Systems n Battery Powered Instruments n Point of Load Power Supplies L, LT, LTC, LTM, Burst Mode, 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 5481178, 5847554, 6580258, 6304066, 6476589, 6774611. LTC3633A-2/LTC3633A-3 Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator DESCRIPTION The LTC®3633A-2 is a high efficiency, dual-channel monolithic synchronous buck regulator using a controlled on-time, current mode architecture, with phase lockable switching frequency. The two channels can run 180° out of phase to relax the requirements for input and output capacitance. The operating supply voltage range is from 3.6V...