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  Efficient Buck-Boost Converter Ideal for Power Saving Modes and Wide Input Voltage Ranges &mdash LT Journal
  PDF, 635 Kb, Datei veröffentlicht: Nov 21, 2006
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  L DESIGN FEATURES Efficient Buck-Boost Converter Ideal
  for Power Saving Modes and Wide
  by Kevin Ohlson
  Input Voltage Ranges
  Introduction
  Portable handheld electronic tools,
  gadgets, and toys are approaching
  the multi-function equivalent of a
  Swiss army knife. Previously separate
  functions are now miniaturized and
  combined into single pocket sized
  package. Unless owned by a teenager
  or a Hollywood agent, most gadgets
  spend most of their time in a low power
  state, waiting to come to life to make
  a phone call, pulse a photoflash or
  spin music and video to a tiny hard
  disk drive. These devices are powered
  from a variety of power sources, which
  means at some point the input voltage is higher than or lower than the
  3.3V or 3.6V voltage needed to power
  the internal electronics. The DC/DC
  converters in the latest portables must …

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• Power Management > Switching Regulator > Buck-Boost Regulators > Internal Power Switch Buck-Boost

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LTC3532EDDPBF, LTC3532EDD PBF