LTC295ICDDB-2-TRPBF datasheet, PDF

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LTC295ICDDB-2-TRPBF: DescriptionPush Button On/Off Controller; File Size426KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC295ICDDB-2-TRPBF Overview

Push Button On/Off Controller

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LTC2950-1/LTC2950-2

Push Button On/Off

Controller

FEATURES

■

DESCRIPTION

The LTC

2950 is a micropower, wide input voltage range,

push button ON/OFF controller. The part contains a push

button input with independently programmable ON and OFF

debounce times that control the toggling of an open drain

enable output. The part also contains a simple micropro-

cessor interface to allow for proper system housekeeping

prior to power down. Under system fault conditions, an

internal

KILL

timer ensures proper power down.

The LTC2950 operates over a wide 2.7V to 26V input

voltage range to accommodate a wide variety of input

power supplies. Very low quiescent current (6μA typical)

makes the LTC2950 ideally suited for battery powered

applications. Two versions of the part are available to ac-

commodate either positive or negative enable polarities.

The parts are available in either 8-lead 3mm

2mm DFN

or ThinSOT packages.

LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ThinSOT is

a trademark of Linear Technology Corporation. All other trademarks are the property of their

respective owners.

■

Adjustable Push Button On/Off Timers

Low Supply Current: 6μA

Wide Operating Voltage Range: 2.7V to 26V

EN Output (LTC2950-1) Allows DC/DC Converter

Control

Output (LTC2950-2) Allows Circuit Breaker

Control

Simple Interface Allows Graceful μP Shut Down

High Input Voltage

Pin with Internal Pull Up

Resistor

±10kV ESD HBM on

Input

Accurate 0.6V Threshold on

KILL

Comparator Input

8-Pin 3mm

2mm DFN and ThinSOT

Packages

APPLICATIONS

■

Portable Instrumentation Meters

Blade Servers

Portable Customer Service PDA

Desktop and Notebook Computers

TYPICAL APPLICATION

3V – 26V

Turn On Debounce

OUT

DC/DC

BUCK

SHDN

10k

INT

μP/μC

KILL

2950 TA01

LTC2950-1

GND

ONT

0.033μF

INT

KILL

OFFT

0.033μF

2V/DIV

10ms/DIV

*OPTIONAL

2950 TA01b

295012fb

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