Datasheet Linear Technology LTC3839EUH#PBF — Даташит

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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Статьи

• Скачать
  2MHz Dual DC/DC Controller Halves Settling Time of Load Release Transients, Features 0.67% Differential VOUT Accuracy and Is Primed for High Step-Down Ratios &mdash LT Journal
  PDF, 2.7 Мб, Файл опубликован: 24 апр 2012
  Выписка из документа

  design features 2MHz Dual DC/DC Controller Halves Settling Time of
  Load Release Transients, Features 0.67% Differential VOUT
  Accuracy and IsВ Primed for High Step-Down Ratios
  Shuo Chen and Terry Groom Electrical conditions once considered extreme are now
  the norm. Modern electronic systems demand high
  currents and very low voltages that can appear to a
  DC/DC converter as an intermittent electrical short. It is
  not uncommon for sub-0.9V power supply rails to demand
  25A or more. In this environment, tight total differential
  regulation accuracy is critical to achieve the demanding
  voltage tolerances required to power core processors
  and large ASICs. In addition, PCB and component
  size constraints have driven up converter operating
  frequencies to enable the use of smaller components. VIN
  4.5V TO 38V + CIN1
  100ВµF CIN2
  10ВµF
  Г—3 LTspice IV circuits.linear.com/546
  VIN 0.1ВµF
  3.57k + COUT2
  330ВµF
  ×2 SENSE1– SENSE2– SENSE1+ SENSE2+ BOOST1 BOOST2 0.1µF TG1 MT1 3.57k TG2 MT2
  DB2 SW1 1ВµF 15k 0.1ВµF DB1 …

• Скачать
  Dual, Fast, Step-Down Controller's External Reference Input Enables Dynamic Voltage Scaling from 0.4V to 5.5V and 0.3% Total Combined Regulation Accuracy &mdash LT Journal
  PDF, 2.8 Мб, Файл опубликован: 10 апр 2013
  Выписка из документа

  design features Dual, Fast, Step-Down Controller’s External Reference Input
  Enables Dynamic Voltage Scaling from 0.4V to 5.5V and
  0.3% Total Combined Regulation Accuracy
  Shuo Chen and Terry Groom Low voltage, high current
  systems require accurate
  differential regulation. It is
  not uncommon for power
  supply rails at or below
  0.9V to demand 25A or
  more, with fast transients
  that look like intermittent
  electrical shorts to the
  power supply rail. Such
  systems typically require
  power supply regulation
  accuracy of less than 1%
  regulated DC and 3% in the
  face of input transients.
  Increasingly, core processors and other
  large scale digital ICs (such as ASICs and
  FPGAs) require dynamic voltage scaling—either multiple fixed levels, or a
  continuously adjusted reference voltage
  using a servo loop—to deliver power …

Модельный ряд

Классификация производителя

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

Варианты написания:

LTC3839EUHPBF, LTC3839EUH PBF