LTC3633AIUFD-2#PBF Datasheet PDF - Linear Technology

●The LTC3633AIUFD-2#PBF is a dual-channel high efficiency monolithic synchronous Buck Regulator uses 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 3.6 to 20V, making it suitable for lithium-ion battery stacks as well as point of load power supply applications from a 12 or 5V supply. The operating frequency is programmable from 500kHz to 4MHz with an external resistor and may be synchronized to an external clock signal. The unique constant frequency/controlled on time architecture is ideal for high step-down ratio applications that operate at high frequency while demanding fast transient response. An internal phase locked loop servos the on-time of the internal one-shot timer to match the frequency of the internal clock or an applied external clock.

● Up to 95% Efficiency

● External frequency synchronization

● Current mode operation for excellent line and load transient response

● User Selectable Burst Mode® operation or forced continuous operation

● Output voltage tracking and soft-start capability

● Short-circuit protected

● Overvoltage input and overtemperature protection

● Power good status outputs