LTC2951-1/LTC2951-2 - Push Button On/Off Controller _ BDTIC a Leading Distributor in China

LTC2951-1/LTC2951-2 - Push Button On/Off Controller

The LTC2951 is a micropower, wide input voltage range pushbutton ON/OFF controller. The part contains a pushbutton input which controls the toggling of an open-drain enable output. The pushbutton 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 powerdown. Under system fault conditions, an adjustable KILL timeout delay ensures proper power-down.

The LTC2951 operates over a 2.7V to 26.4V 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.

Features

Adjustable Pushbutton Debounce and Delay Timers
Low Supply Current: 6μA
Wide Operating Voltage Range: 2.7V to 26.4V
EN Output (LTC2951-1) Allows DC/DC Converter Control
EN Output (LTC2951-2) 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

Typical Application

Applications

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

Packaging

**Order Information**
Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC2951CDDB-1#PBF	3x2 DFN-8	C	$2.59
LTC2951CDDB-1#TRMPBF	3x2 DFN-8	C	$2.59	$1.86
LTC2951CDDB-1#TRPBF	3x2 DFN-8	C	$2.59	$1.81
LTC2951CDDB-2#PBF	3x2 DFN-8	C	$2.59
LTC2951CDDB-2#TRMPBF	3x2 DFN-8	C	$2.59	$1.86
LTC2951CDDB-2#TRPBF	3x2 DFN-8	C	$2.59	$1.81
LTC2951CTS8-1#PBF	SOT-23	C	$2.59
LTC2951CTS8-1#TRMPBF	SOT-23	C	$2.59	$1.86
LTC2951CTS8-1#TRPBF	SOT-23	C	$2.59	$1.81
LTC2951CTS8-2#PBF	SOT-23	C	$2.59
LTC2951CTS8-2#TRMPBF	SOT-23	C	$2.59	$1.86
LTC2951CTS8-2#TRPBF	SOT-23	C	$2.59	$1.81
LTC2951IDDB-1#PBF	3x2 DFN-8	I	$3.04
LTC2951IDDB-1#TRMPBF	3x2 DFN-8	I	$3.04	$2.21
LTC2951IDDB-1#TRPBF	3x2 DFN-8	I	$3.04	$2.16
LTC2951IDDB-2#PBF	3x2 DFN-8	I	$3.04
LTC2951IDDB-2#TRMPBF	3x2 DFN-8	I	$3.04	$2.21
LTC2951IDDB-2#TRPBF	3x2 DFN-8	I	$3.04	$2.16
LTC2951ITS8-1#PBF	SOT-23	I	$3.04
LTC2951ITS8-1#TRMPBF	SOT-23	I	$3.04	$2.21
LTC2951ITS8-1#TRPBF	SOT-23	I	$3.04	$2.16
LTC2951ITS8-2#PBF	SOT-23	I	$3.04
LTC2951ITS8-2#TRMPBF	SOT-23	I	$3.04	$2.21
LTC2951ITS8-2#TRPBF	SOT-23	I	$3.04	$2.16

Demo Boards


Part Number	Description	Price
DC826B-B	LTC2951CTS8-2 \| On/Off Controller, Vin (26.4V Max) = 2.7V - 26.4V	$25.00