Datasheet Linear Technology LT3641HFE#PBF — 数据表

LT3641
Dual Monolithic Buck
Regulator with Power-On
Reset and Watchdog Timer
DESCRIPTION FEATURES
n n High Voltage Buck Regulator:
4V to 42V Operating Range
1.3A Output Current
Input Transient Protection to 55V
Low Voltage Synchronous Buck Regulator:
2.5V to 5.5V Input Voltage Range
1.1A Output Current
Synchronizable, Adjustable 350kHz to 2.5MHz
Switching Frequency
Programmable Power-On Reset Timer
Programmable Window Mode Watchdog Timer
Typical Quiescent Current: 290μA
Short-Circuit Robust
Programmable Soft-Start
Low Shutdown Current: IQ < 1μA
Thermal Shutdown
Available in Thermally Enhanced 28-Lead
(4mm × 5mm) QFN and 28-Lead TSSOP Packages The LT®3641 is a dual channel, current mode monolithic buck …