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Корпус / Упаковка / Маркировка

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Экологический статус

Design Notes

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  Active Voltage Positioning Reduces Output Capacitors &mdash Design Solutions 10
  PDF, 130 Кб, Файл опубликован: 1 ноя 1999
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  Design Solutions 10
  November 1999
  Active Voltage Positioning Reduces Output Capacitors
  by Robert Sheehan
  INTRODUCTION
  Power supply performance, especially transient response,
  is key to meeting today’s demands for low voltage, high
  current microprocessor power. In an effort to minimize
  the voltage deviation during a load step, a technique that
  has recently been coined “active voltage positioning” is
  generating substantial interest and gaining popularity in
  the portable computer market. The benefits include lower
  peak-to-peak output voltage deviation for a given load
  step, without having to increase the output filter capacitance. Alternatively, the output filter capacitance can be
  reduced while maintaining the same peak-to-peak transient response.
  BASIC PRINCIPLE
  The term “active voltage positioning” (AVP) refers to
  setting the power supply output voltage at a point that is
  dependent on the load current. At minimum load, the
  output voltage is set to a slightly higher than nominal level.
  At full load, the output voltage is set to a slightly lower than
  nominal level. Effectively, the DC load regulation is
  degraded, but the load transient voltage deviation will be …

Статьи

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  Beware: Worst-Case Specifications Can Be a Reality &mdash LT Journal
  PDF, 172 Кб, Файл опубликован: 1 фев 2000
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  DESIGN FEATURES Beware: Worst-Case Specifications
  Can Be a Reality
  by Steve Hobrecht
  Introduction
  The design of portable electronic
  devices always involves trade-offs
  among cost, weight, size, speed, runtime, features and reliability. It is
  necessary to design the power supply
  for worst-case conditions because the
  software, which may or may not have
  been written yet, may, in some situations, exercise the hardware to its
  fullest potential. If typical operating
  conditions are used to define the power
  supply design requirements, hardware reliability may depend upon the
  particular software being used, either
  in normal operation or when the software is “acting up.”
  In the case of a typical notebook
  computer, the nominal 120mA I/O
  current can rise to 2.5A for an indeterminate amount of time. The
  software being executed is the determining factor. If a linear regulator is
  5V
  SYSTEM
  SUPPLY …

Модельный ряд

Классификация производителя

• Power Management > Switching Regulator > Digitally Programmable Regulators

Варианты написания:

LTC1708EG-PGPBF, LTC1708EG-PG PBF, LTC1708EGPG#PBF, LTC1708EG PG#PBF