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  Tiny Monolithic Step-Down Regulators Operate with Wide Input Range &mdash DN390
  PDF, 158 Kb, Archivo publicado: abr 18, 2006
  Extracto del documento

  advertisement Tiny Monolithic Step-Down Regulators Operate with
  Wide Input Range – Design Note 390
  Kevin Huang
  Introduction
  Automotive batteries, industrial power supplies, distributed supplies and wall transformers are all sources of
  wide-ranging high voltage inputs. The easiest way to step
  down these sources is with a high voltage monolithic
  step-down regulator that can directly accept a wide input
  range and produce a well-regulated output. The LTВ® 3493
  accepts inputs from 3.6V to 36V and LT3481 accepts
  inputs from 3.6V to 34V. Both provide excellent line
  and load regulation and dynamic response. The LT3481
  offers a high efficiency solution over a wide load range and
  keeps the output ripple low during Burst ModeВ® operation
  while the LT3493 provides a tiny solution with minimal
  external components. The LT3493 operates at 750kHz
  and the LT3481 has adjustable frequency from 300kHz
  to 2.8MHz. High frequency operation enables the use of
  small, low cost inductors and ceramic capacitors.
  Low Ripple and High Efficiency Solution over Wide
  Load Range
  The LT3481 is available in a 10-pin MSOP or a 3mm Г—
  3mm DFN package with an integrated 3.8A power switch …

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• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck

Otros nombres:

LT3493IDCBTRPBF, LT3493IDCB TRPBF