LTC2952IF

Pushbutton PowerPath™ Controller with Supervisor

DESCRIPTION

The LTC®2952 is a power management device that features three main functions: pushbutton on/off control of system power, ideal diode PowerPath controllers 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.

FEATURES

Pushbutton On/Off Control

Automatic Low Loss Switchover Between DC Sources

Wide Operating Voltage Range: 2.7V to 28V

Low 25μA Shutdown Current

Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature

Adjustable Pushbutton On/Off Timers

Simple Interface Allows Graceful μP Shutdown

Extendable Housekeeping Wait Time Prior to Shutdown

200ms Reset Delay and 1.6s Watchdog Timeout

±8kV HBM ESD on PBInput

20-pin TSSOP and QFN 4mm ×4mm Packages

APPLICATIONS

Desktop and Notebook Computers

Portable Instrumentations

Cell Phones, PDA and Handheld Computers

Servers and Computer Peripherals

Battery Backup Systems