LT3641 - Linear

LT3641 Dual Monolithic Buck Regulator

n High Voltage Buck Regulator: 4V to 42V Operating Range 1.3A Output Current n Input Transient Protection to 55V n Low Voltage Synchronous Buck Regulator: 2.5V to 5.5V Input Voltage Range 1.1A Output Current n Synchronizable, Adjustable 350kHz to 2.5MHz Switching Frequency n Programmable Power-On Reset Timer n Programmable Window Mode Watchdog Timer n Typic.

Features

DESCRIPTION n High Voltage Buck Regulator: 4V to 42V Operating Range 1.3A Output Current n Input Transient Protection to 55V n Low Voltage Synchronous Buck Regulator: 2.5V to 5.5V Input Voltage Range 1.1A Output Current n Synchronizable, Adjustable 350kHz to 2.5MHz Switching Frequency n Programmable Power-On Reset Timer n Programmable Window Mode Watchdog Timer n Typical Quiescent Current: 290μA n Short-Circuit Robust n Programmable Soft-Start n Low Shutdown Current: IQ < 1μA n Thermal Shutdown n Available in Thermally Enhanced 28-Lead (4mm × 5mm) QFN and 28-Lead TSSOP Packages APPLICATIONS .