LTC2954

RECOMMENDED FOR NEW DESIGNS

Push Button On/Off Controller with µP Interrupt

Part Models: 16
1ku List Price: Starting From $2.15

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Overview

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 EN Output (LTC2954-2) Allows Circuit Breaker Control
Simple Interface Allows Graceful μP Shutdown
High Input Voltage PB Pin with Internal Pull-Up Resistor
±10kV ESD HBM on PB Input
Accurate 0.6V Threshold on KILL Comparator Input
8-Pin 3mm × 2mm DFN and ThinSOT^™ Packages

The 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. Two versions of the part are available to accommodate either positive or negative enable polarities.

Applications

Pushbutton PowerPath^™ Control
Portable Instrumentation Meters
Blade Servers
Portable Customer Service PDA
Desktop and Notebook Computers

Part Models: 16
1ku List Price: Starting From $2.15

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC2954CDDB-1#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954CDDB-1#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954CDDB-2#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954CDDB-2#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954CTS8-1#TRMPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954CTS8-1#TRPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954CTS8-2#TRMPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954CTS8-2#TRPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954IDDB-1#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954IDDB-1#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954IDDB-2#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954IDDB-2#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954ITS8-1#TRMPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954ITS8-1#TRPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954ITS8-2#TRMPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC2954ITS8-2#TRPBF	8-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Circuit Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
Oscillators 1
LTC6991	PRODUCTION	TimerBlox: Resettable, Low Frequency Oscillator

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC2954-1
LTC2954-2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.