Datasheet Linear Technology LTM8001 — Даташит

Datasheets

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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Статьи

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  µModule Regulator Charges Supercapacitor Backup Supply, Supporting LDO Outputs When the Input Supply Fails &mdash LT Journal
  PDF, 2.6 Мб, Файл опубликован: 10 апр 2013
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  ВµModule Regulator Charges Supercapacitor Backup Supply,
  Supporting LDO Outputs When the Input Supply Fails
  Andy Radosevich The LTM8001 is a ВµModule regulator that combines a 5A switching regulator with an
  array of five 1.1A low noise LDOs. The switching regulator can be set for constant
  current, suitable to charge supercapacitors for power backup. The LTM8001
  operates from 6V to 36V inputs. The switching regulator is capable of constant
  output voltage or constant output current regulation at switching frequencies from
  200kHz to 1MHz. The output of the switching regulator can be adjusted from
  1.2V to 24V and the outputs of the LDOs are adjustable from 0V to 24V.
  The switching regulator is set to regulate
  output current at 5.6A (typical) to provide
  a current limit that is above the maximum
  output current of 5A. The regulated current level can be easily lowered. The inputs
  for three of the LDOs are hardwired to the
  output of the switching regulator, but the
  input to the remaining bank of two LDOs
  is undedicated, so it can be connected to
  the switching regulator or elsewhere. The
  bias inputs to the LDOs are undedicated
  but are separated into two inputs: one
  for the bank of three connected to the
  switching regulator and the other for the
  remaining bank of two LDOs. The outputs …

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  µModule Regulator Combines a Switcher with Five 1.1A LDOs: Use Them for Multiple Low Noise Rails, or Parallel Them to Spread Heat and Share Current to 5A &mdash LT Journal
  PDF, 357 Кб, Файл опубликован: 6 янв 2014
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  ВµModule Regulator Combines a Switcher with Five 1.1A
  LDOs: Use Them for Multiple Low Noise Rails, or Parallel
  Them to Spread Heat and Share Current to 5A
  Andy Radosevich LDOs are often used as ripple-rejecting post-regulators on the outputs of switching
  converters. LDO post-regulators can also improve regulation and transient response.
  One of the top limitations on the output current capability for a post-regulator is
  the LDO temperature rise, which, aside from thermal resistance, depends mainly
  on its input-to-output differential voltage. The LTMВ®8001 ВµModule regulator is a
  high efficiency step-down switching converter followed by an array of five low noise
  LDOs with individually rated output currents of 1.1A. To spread heat and increase
  available output current, the LDOs can be operated in parallel, giving designers
  several easy-to-implement options for varied input-output voltage combinations.
  SOME LTM8001 FEATURES
  Step-Down Converter 6V to 36V VIN range Constant voltage/constant current
  (CV/CC) output 5A maximum output current Adjustable 200kHz to 1MHz switching
  frequency Adjustable output voltage
  LDOs Adjustable output voltages Three LDOs hardwired to the switcher
  output Two undedicated LDOs
  SPREAD THE HEAT BY PARALLELING
  THE LDOs The LTM8001’s internal LDOs are typically
  set up to post-regulate the output of the
  built-in switching converter. An LDO’s
  temperature rise is relatively proportional …

Модельный ряд

Классификация производителя

• µModule Solutions > µModule Regulators > µModule Buck Regulators | Extended Temperature (H & MP) µModule Regulators
• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Buck Regulator Plus LDO