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  Two New Switching Regulators Deliver Both Power and Ultralow Noise &mdash LT Journal
  PDF, 219 Kb, 档案已发布: Sep 1, 2001
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  DESIGN FEATURES Two New Switching Regulators Deliver
  Both Power and Ultralow Noise
  by Rick Brewster
  Introduction
  T raditionally, when designers
  required a very low noise power supply, they would avoid DC/DC
  switchers because of their notorious
  reputation for generating high frequency harmonics. If they did use a
  switcher, careful attention would be
  required for board layout, shielding
  and the judicious use of filtering elements. The LT1683 and LT1738 are
  new switching regulator controllers
  that create a DC/DC switching supply with significantly lower conducted
  and radiated electromagnetic interference (EMI). These controllers
  reduce EMI at its source by controlling the current and voltage slew rates
  of the main switches. A robust DC/
  DC converter for use in noise-sensitive applications can be built with
  confidence.
  The LT1683 and LT1738 make use
  of a patented dual control loop method
  that allows for control of both the
  output switch voltage slew rate and 48V
  510Ω …

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• Power Management > Switching Regulator > Ultralow Noise Regulators

其他名称:

LT1738IGPBF, LT1738IG PBF