Datasheet Linear Technology LTC1878 — Даташит

Datasheets

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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Design Notes

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  10ВµA Quiescent Current Step-Down Regulators Extend Standby Time in Handheld Products &mdash DN235
  PDF, 83 Кб, Файл опубликован: 6 июл 2001
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  advertisement 10ВµA Quiescent Current Step-Down Regulators Extend
  Standby Time in Handheld Products – Design Note 235
  Greg Dittmer
  Importance of Low Quiescent Current
  Many handheld products on the market today are used
  only occasionally but must be kept alive and ready all
  the time. When not being used, the circuitry is powered
  down to save battery energy, with a minimum amount
  of circuitry remaining on. Although the supply current
  is significantly reduced in this low power standby mode,
  the battery energy will still be slowly depleted to power
  the keep-alive circuitry and the regulator. If the device
  spends most of its time in this standby mode, the quiescent current of the regulator can have a significant
  effect on the life of the battery (see Figure 1).
  To maximize the life of the battery in these types of
  products, Linear Technology has extended its family
  of 10ОјA step-down regulators to provide three new
  products. The LTC В®1771 is a constant off-time controller that drives an external P-channel MOSFET for
  output loads up to 5A. The LTC1877 and LTC1878 are
  monolithic regulators that provide constant frequency
  (550kHz) plus synchronous operation for loads up
  to 600mA. Due to their micropower architecture, the
  LTC1771, LTC1877 and LTC1878 require only 10ОјA of …

Статьи

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  Monolithic Synchronous Step-Down Regulators Pack >500mA Output Current in an MS8 Package &mdash LT Journal
  PDF, 311 Кб, Файл опубликован: 1 май 2000
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  LINEAR TECHNOLOGY
  MAY 2000 IN THIS ISSUE…
  COVER ARTICLE
  Monolithic Synchronous Step-Down
  Regulators Pack 500mA Output
  Current in an MS8 Package
  .1
  Jaime Tseng and Gary Shockey Issue Highlights . 2
  LTCВ® in the News .2
  DESIGN FEATURES
  New Rail-to-Rail Output Op Amps
  Bring Precision Performance to
  Low Voltage Systems .6
  Alexander Strong and Gary Maulding DC Accurate, Rail-to-Rail Active RC
  Lowpass Filter Replaces Discrete
  Designs—One Resistor Value Sets
  the Cutoff Frequency
  . 11
  Doug La Porte SOT-23 Switching Regulator with
  Integrated 1 Amp Switch Delivers
  High Current Outputs . 17
  Albert Wu Dual Operational Amplifier
  Combines 16-Bit Precision with …

Модельный ряд

Классификация производителя

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