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LTC2951-2

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  Pushbutton On/Off Controller Simplifies System Design &mdash DN391
  PDF, 98 Kb, Archivo publicado: jun 1, 2006
  Extracto del documento

  advertisement Pushbutton On/Off Controller Simplifies System Design
  Design Note 391
  Victor Fleury
  Introduction
  Handheld designers often grapple with ways to de-bounce
  and control the on/off pushbutton of portable devices.
  Traditional de-bounce designs use discrete logic, flipflops, resistors and capacitors. Other designs include
  an onboard microprocessor and discrete comparators
  which continuously consume battery power. For high
  voltage multicell battery applications, a high voltage
  LDO is needed to drive the low voltage devices. All this
  extra circuitry not only increases required board space
  and design complexity, but also drains the battery when
  the handheld device is turned off. Linear Technology addresses this pushbutton interface challenge with a pair
  of tiny pushbutton controllers.
  The LTC®2950 integrates all the flexible timing circuits
  needed to de-bounce the on/off pushbutton of handheld
  devices. The part also provides a simple yet powerful
  interface that allows for controlled power up and power
  down of the handheld device. The LTC2951 offers an
  adjustable timer for applications that require more time
  during power down. These two micropower, high voltage
  (2.7V to 26V) parts are offered in space-saving 8-pin …

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• Monitor, Control and Protection > Pushbutton Controllers

Otros nombres:

LTC2951CTS8-1TRMPBF, LTC2951CTS8-1 TRMPBF, LTC2951CTS81#TRMPBF, LTC2951CTS8 1#TRMPBF