The LTC2952CF#PBF is a Power Management Device that features three main functions of pushbutton on/off control of system power, ideal diode PowerPath™ controller and system monitoring. The LTC2952"s pushbutton input, which provides on/off control of system power, has independently adjustable ON and OFF debounce times. A simple microprocessor interface involving an interrupt signal allows for proper system housekeeping prior to power-down. The ideal diode PowerPath controllers provide automatic low loss switchover between two DC sources by regulating two external P-channel MOSFETs to have a small 20mV forward drop. High reliability systems may utilize the LTC2952"s monitoring features to ensure system integrity. These features includes power-fail, voltage monitoring and µP watchdog. The LTC2952 operates over a wide operating voltage range to accommodate a large variety of input power supplies.
Pushbutton ON/OFF control
Automatic low loss switchover between DC sources
Monitored voltage over-temperature
Adjustable pushbutton ON/OFF timers
Simple interface allows graceful µP shutdown
Extendable housekeeping wait time prior to shutdown
