LTC2951 - Push Button On/Off Controller

Features

  • Adjustable Push Button Debounce and Delay Timers
  • Low Supply Current: 6µA
  • Wide Operating Voltage Range: 2.7V to 26V
  • EN Output (LTC2951-1) Allows DC/DC Converter Control
  • EN Output (LTC2951-2) 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

LTC2951
LTC2951
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Description

The LTC2951 is a micropower, wide input voltage range push button ON/OFF controller. The part contains a push button input which controls the toggling of an open drain enable output. The push button turn OFF debounce time is externally programmable, while the turn ON debounce time is fixed at 128ms. A simple microprocessor interface allows for proper system housekeeping prior to power down. Under system fault conditions, an adjustable KILL timeout delay ensures proper power down.

The LTC2951 operates over a 2.7V to 26V input voltage range to accommodate a variety of input power supplies. Very low quiescent current (6µA typical) makes the LTC2951 ideally suited for battery powered applications. Two versions of the part are available to accommodate either positive or negative enable polarities. The parts are available in 8-pin 3mm × 2mm DFN and ThinSOT packages.

 

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Packaging

DFN-8, SOT-23

LTC2951
LTC2951
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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2951CDDB-1 DFN 8 C $2.59   View
LTC2951CDDB-1#PBF DFN 8 C $2.59   View
LTC2951CDDB-1#TR DFN 8 C $2.59 $1.81 View
LTC2951CDDB-1#TRM DFN 8 C $2.59 $1.83 View
LTC2951CDDB-1#TRMPBF DFN 8 C $2.59 $1.83 View
LTC2951CDDB-1#TRPBF DFN 8 C $2.59 $1.81 View
LTC2951CDDB-2 DFN 8 C $2.59   View
LTC2951CDDB-2#PBF DFN 8 C $2.59   View
LTC2951CDDB-2#TR DFN 8 C $2.59 $1.81 View
LTC2951CDDB-2#TRM DFN 8 C $2.59 $1.83 View
LTC2951CDDB-2#TRMPBF DFN 8 C $2.59 $1.83 View
LTC2951CDDB-2#TRPBF DFN 8 C $2.59 $1.81 View
LTC2951CTS8-1 SOT 8 C $2.59   View
LTC2951CTS8-1#PBF SOT 8 C $2.59   View
LTC2951CTS8-1#TR SOT 8 C $2.59 $1.81 View
LTC2951CTS8-1#TRM SOT 8 C $2.59 $1.83 View
LTC2951CTS8-1#TRMPBF SOT 8 C $2.59 $1.83 View
LTC2951CTS8-1#TRPBF SOT 8 C $2.59 $1.81 View
LTC2951CTS8-2 SOT 8 C $2.59   View
LTC2951CTS8-2#PBF SOT 8 C $2.59   View
LTC2951CTS8-2#TR SOT 8 C $2.59 $1.81 View
LTC2951CTS8-2#TRM SOT 8 C $2.59 $1.83 View
LTC2951CTS8-2#TRMPBF SOT 8 C $2.59 $1.83 View
LTC2951CTS8-2#TRPBF SOT 8 C $2.59 $1.81 View
LTC2951IDDB-1 DFN 8 I $3.04   View
LTC2951IDDB-1#PBF DFN 8 I $3.04   View
LTC2951IDDB-1#TR DFN 8 I $3.04 $2.16 View
LTC2951IDDB-1#TRM DFN 8 I $3.04 $2.18 View
LTC2951IDDB-1#TRMPBF DFN 8 I $3.04 $2.18 View
LTC2951IDDB-1#TRPBF DFN 8 I $3.04 $2.16 View
LTC2951IDDB-2 DFN 8 I $3.04   View
LTC2951IDDB-2#PBF DFN 8 I $3.04   View
LTC2951IDDB-2#TR DFN 8 I $3.04 $2.16 View
LTC2951IDDB-2#TRM DFN 8 I $3.04 $2.18 View
LTC2951IDDB-2#TRMPBF DFN 8 I $3.04 $2.18 View
LTC2951IDDB-2#TRPBF DFN 8 I $3.04 $2.16 View
LTC2951ITS8-1 SOT 8 I $3.04   View
LTC2951ITS8-1#PBF SOT 8 I $3.04   View
LTC2951ITS8-1#TR SOT 8 I $3.04 $2.16 View
LTC2951ITS8-1#TRM SOT 8 I $3.04 $2.18 View
LTC2951ITS8-1#TRMPBF SOT 8 I $3.04 $2.18 View
LTC2951ITS8-1#TRPBF SOT 8 I $3.04 $2.16 View
LTC2951ITS8-2 SOT 8 I $3.04   View
LTC2951ITS8-2#PBF SOT 8 I $3.04   View
LTC2951ITS8-2#TR SOT 8 I $3.04 $2.16 View
LTC2951ITS8-2#TRM SOT 8 I $3.04 $2.18 View
LTC2951ITS8-2#TRMPBF SOT 8 I $3.04 $2.18 View
LTC2951ITS8-2#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.

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Applications

  • Portable Instrumentation Meters
  • Blade Servers
  • Portable Customer Service PDA
  • Desktop and Notebook Computers
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