LTC2954CDDB-2#TRMPBF, Supervisory Circuits PB On/Off Cntr w/ P Interrupt

LTC2954 is a pushbutton on/off controller that manages system power via a pushbutton interface. An enable output toggles system power while an interrupt output provides debounced pushbutton status. The interrupt output can be used in menu driven applications to request a system power-down. A power kill input allows a microprocessor or system to reset the enable output, effectively powering down the system. Independently adjustable on and off timers allow dependable pushbutton control of the enable output and resistance to accidental toggling of system power. The LTC2954 operates over a wide 2.7V to 26.4V input voltage range to accommodate a wide variety of input power supplies. Very low quiescent current (6µA typical) makes the LTC2954 ideally suited for battery powered applications. • Adjustable power on/off timers• High voltage active low EN Output (LTC2954-2) allows circuit breaker control• Simple interface allows graceful µP shutdown• High input voltage active low PB pin with internal pull-up resistor• ESD HBM ±10kV on PB input• Accurate 0.6V threshold on active low KILL comparator input• 8-lead (3mm × 2mm) plastic DFN package• Temperature range from 0°C to 70°C