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  Inverting Regulator Takes Inputs Up to 50V and Supports Outputs to 4A &mdash DN552
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  Inverting Regulator Takes Inputs Up to 50V and Supports
  Outputs to 4A
  Design Note 552
  Victor Khasiev
  Introduction
  Positive-to-negative DC/DC conversion (inverting
  output) is widely used in LCD devices, OLED displays,
  audio amplifiers, industrial equipment, measurement
  tools, test systems, LED drivers and battery chargers.
  In all of these cases, the inverting converter must be
  compact, support high power and accommodate an
  extended input voltage range. The LTC В®7149 satisfies
  all of these requirements. Its integrated 4A switches
  and wide 3.4V to 60V input voltage range exceed the
  requirements of the most demanding applications,
  including those in automotive environments.
  Circuit Description and Functionality
  FigureВ 1 shows a positive-to-negative converter based
  on the LTC7149. This solution delivers –10V at 2A
  from an input voltage of 12V—an automotive rail, for
  511О© ITH 10nF LTC7149EFE ISET
  MODE/SYNC RSET
  200k …

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• Power Management > Switching Regulator > Inverting Regulators

其他名称:

LTC7149IFEPBF, LTC7149IFE PBF