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LT1931 LT1931

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  Inverting Switching Regulator Delivers High Current/Low Noise Outputs in a SOT-23 &mdash LT Journal
  PDF, 315 Kb, File published: Sep 1, 2000
  Extract from the document

  DESIGN FEATURES Inverting Switching Regulator Delivers
  High Current/Low Noise Outputs
  in a SOT-23
  by Albert Wu
  Introduction
  The LT1931 is the industry’s highest
  power SOT-23 inverting switching
  regulator. The on-chip 1A switch
  allows high output currents to be
  generated. In a typical 5V to –5V
  application, the part can deliver
  350mA; a 5V to –12V application can
  provide 150mA. The LT1931 switches
  at a fixed frequency of 1.2MHz, allowing the use of tiny, low cost capacitors
  and inductors of 2mm or less in height.
  The constant switching frequency
  keeps the output voltage noise low
  and predictable, making designs with
  output voltage ripple less than 5mVP-P
  easily achievable. An integrated shutdown feature limits the supply current
  to less then 1ВµA when the part is
  disabled, extending battery life. The
  high power and low noise LT1931 …

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Manufacturer's Classification

• Power Management > Switching Regulator > Inverting Regulators | LCD/CCD/OLED Bias

Other Names:

LT1931AIS5PBF, LT1931AIS5 PBF