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Экологический статус

Статьи

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  1.5MHz Monolithic Synchronous Step-Down Regulator Brings High Efficiency to WCDMA Cellular Telephone Applications &mdash LT Journal
  PDF, 283 Кб, Файл опубликован: 1 фев 2004
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  DESIGN IDEAS 1.5MHz Monolithic Synchronous
  Step-Down Regulator Brings High
  Efficiency to WCDMA Cellular
  Telephone Applications
  by Theo Phillips
  Introduction To extend talk time and save battery
  power, new 3rd generation WCDMA
  cellular telephones are expected to
  adjust their power levels to the requirements of each transmission. The
  highest power levels are reserved for
  data transmission far from the base
  station; the lowest for voice transmission near the station. Power amplifiers
  in these phones require a DC power
  supply which can slew quickly from
  one voltage to another. To perform this
  function, the LTC3403 and LTC3408
  provide DC/DC conversion from single
  lithium-ion cell voltages down to a
  dynamically adjustable 0.3V–3.5V,
  which can be easily modulated with
  an external DAC.
  These monolithic, synchronous
  step-down regulators are offered in a …

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Классификация производителя

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

Варианты написания:

LTC3403EDDTRPBF, LTC3403EDD TRPBF