LTC2954 Datasheet | Linear Technology

LTC2954 Push Button On/Off Controller with μP Interrupt U SHORT PULSE LONG PULSE STAYS ON TURNS OFF INTERRUPT INTERRUPT 2954 TD01b 2954 TA01 Features Adjustable Power On/Off Timers - Low Supply Current: 6µA - Wide Operating Voltage Range: 2.7V to 26.4V - Low Leakage EN Output (LTC2954-1) Allows DC/DC Converter Control - High Voltage EN Output (LTC2954-2) Allows Circuit .. Breaker Control - Simple Interface Allows Graceful µP Shut Down - High Input Voltage PB Pin with Internal Pull Up Resistor - ±10k V ESD HBM on PB Input - Accurate 0.6V Threshold on KILL parator Input - 8-Pin 3mm × 2mm DFN and Thin SOTTM Packages - DESCRIPTIO The LTC®2954 is a push button On/Off controller that manages system power via a push button interface. An enable output toggles system power while an interrupt output provides debounced push button 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 push button 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 acmodate a wide variety of input power supplies. Very low quiescent current (6µA typical) makes the LTC2954 ideally suited for battery powered applications. Two versions of the part are available to acmodate either positive or negative enable polarities. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Thin SOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. U APPLICATIO S - - - - - Push Button Power Path Control Portable Instrumentation Meters Blade Servers Portable Customer Service PDA Desktop and Notebook puters + 9V 100k VIN LTC2954-2 PB GND ONT EN INT KILL PDT 1µ F t...