LTC2954 - Push Button On/Off Controller with µP Interrupt

Features

  • Click Here for LTC2954 Evaluation Kit
  • 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 Shut Down
  • 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 ThinSOTTM Packages

Typical Application

LTC2954
LTC2954
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Description

The LTC2954 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 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.

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Packaging

SOT-23-8, DFN-8

LTC2954
LTC2954
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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2954CDDB-1 DFN 8 C $2.59   View
LTC2954CDDB-1#PBF DFN 8 C $2.59   View
LTC2954CDDB-1#TR DFN 8 C $2.59 $1.81 View
LTC2954CDDB-1#TRM DFN 8 C $2.59 $1.83 View
LTC2954CDDB-1#TRMPBF DFN 8 C $2.59 $1.83 View
LTC2954CDDB-1#TRPBF DFN 8 C $2.59 $1.81 View
LTC2954CDDB-2 DFN 8 C $2.59   View
LTC2954CDDB-2#PBF DFN 8 C $2.59   View
LTC2954CDDB-2#TR DFN 8 C $2.59 $1.81 View
LTC2954CDDB-2#TRM DFN 8 C $2.59 $1.83 View
LTC2954CDDB-2#TRMPBF DFN 8 C $2.59 $1.83 View
LTC2954CDDB-2#TRPBF DFN 8 C $2.59 $1.81 View
LTC2954CTS8-1 SOT 8 C $2.59   View
LTC2954CTS8-1#PBF SOT 8 C $2.59   View
LTC2954CTS8-1#TR SOT 8 C $2.59 $1.81 View
LTC2954CTS8-1#TRM SOT 8 C $2.59 $1.83 View
LTC2954CTS8-1#TRMPBF SOT 8 C $2.59 $1.83 View
LTC2954CTS8-1#TRPBF SOT 8 C $2.59 $1.81 View
LTC2954CTS8-2 SOT 8 C $2.59   View
LTC2954CTS8-2#PBF SOT 8 C $2.59   View
LTC2954CTS8-2#TR SOT 8 C $2.59 $1.81 View
LTC2954CTS8-2#TRM SOT 8 C $2.59 $1.83 View
LTC2954CTS8-2#TRMPBF SOT 8 C $2.59 $1.83 View
LTC2954CTS8-2#TRPBF SOT 8 C $2.59 $1.81 View
LTC2954IDDB-1 DFN 8 I $3.04   View
LTC2954IDDB-1#PBF DFN 8 I $3.04   View
LTC2954IDDB-1#TR DFN 8 I $3.04 $2.16 View
LTC2954IDDB-1#TRM DFN 8 I $3.04 $2.18 View
LTC2954IDDB-1#TRMPBF DFN 8 I $3.04 $2.18 View
LTC2954IDDB-1#TRPBF DFN 8 I $3.04 $2.16 View
LTC2954IDDB-2 DFN 8 I $3.04   View
LTC2954IDDB-2#PBF DFN 8 I $3.04   View
LTC2954IDDB-2#TR DFN 8 I $3.04 $2.16 View
LTC2954IDDB-2#TRM DFN 8 I $3.04 $2.18 View
LTC2954IDDB-2#TRMPBF DFN 8 I $3.04 $2.18 View
LTC2954IDDB-2#TRPBF DFN 8 I $3.04 $2.16 View
LTC2954ITS8-1 SOT 8 I $3.04   View
LTC2954ITS8-1#PBF SOT 8 I $3.04   View
LTC2954ITS8-1#TR SOT 8 I $3.04 $2.16 View
LTC2954ITS8-1#TRM SOT 8 I $3.04 $2.18 View
LTC2954ITS8-1#TRMPBF SOT 8 I $3.04 $2.18 View
LTC2954ITS8-1#TRPBF SOT 8 I $3.04 $2.16 View
LTC2954ITS8-2 SOT 8 I $3.04   View
LTC2954ITS8-2#PBF SOT 8 I $3.04   View
LTC2954ITS8-2#TR SOT 8 I $3.04 $2.16 View
LTC2954ITS8-2#TRM SOT 8 I $3.04 $2.18 View
LTC2954ITS8-2#TRMPBF SOT 8 I $3.04 $2.18 View
LTC2954ITS8-2#TRPBF SOT 8 I $3.04 $2.16 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Evaluation Kits

Part Number Description Price
DC1090A LTC2954 | Push Button On/Off Controller with uP Interrupt $100.00
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Applications

  • Push Button Power Path Control
  • Portable Instrumentation Meters
  • Blade Servers
  • Portable Customer Service PDA
  • Desktop and Notebook Computers
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