Datasheet Linear Technology LTC1702AIGN#TRPBF — Даташит

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Экологический статус

Design Notes

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  2-Phase DC/DC Controller Reduces Capacitanceand Increases Battery Life in Portable Applications &mdash Design Solutions 9
  PDF, 106 Кб, Файл опубликован: 1 июн 1999
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  Design Solutions 9
  June 1999
  2-Phase DC/DC Controller Reduces Capacitance
  and Increases Battery Life in Portable Applications
  The LTCВ®1628 dual high efficiency DC/DC controller brings
  the considerable benefits of 2-phase operation to portable
  applications for the first time. Notebook computers, PDAs,
  handheld terminals and automotive electronics will all
  benefit from the lower input filtering requirement, reduced
  electromagnetic interference (EMI) and increased efficiency associated with 2-phase operation. coming from the switches, greatly reducing the overlap
  time where they add together (see Figure 1). The result is
  a significant reduction in total RMS input current, which,
  in turn, allows less expensive input capacitors to be used,
  reduces shielding requirements for EMI and improves real
  world operating efficiency.
  Figure 2 compares the input waveforms for a representative 1-phase dual switching regulator to the new LTC1628
  2-phase dual switching regulator. An actual measurement
  of the RMS input current under these conditions shows
  that 2-phase operation lowers the input current from
  2.53ARMS to 1.55ARMS. Why the need for 2-phase operation? Before the LTC1628,
  constant-frequency dual switching regulators operated
  both channels in phase (i.e., 1-phase operation). This
  means that both switches turned on at the same time, …

Статьи

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  30V, Dual Output Regulator Controller is Efficient, Rich in Features, and Saves Space &mdash LT Journal
  PDF, 1.0 Мб, Файл опубликован: 25 мар 2005
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  DESIGN FEATURES 30V, Dual Output Regulator Controller
  is Efficient, Rich in Features,
  and Saves Space by Teo Yang Long and Theo Phillips
  Introduction
  The LTC3802 is designed to excel in
  generating low output voltages from
  high input voltages, a common problem for the power supplies of fast CPUs.
  It is the latest in Linear Technology’s
  family of high speed, voltage feedback,
  synchronous step-down regulator
  controllers. It retains the constant
  frequency architecture and Burst
  ModeВ® operation of the LTC1702A,
  while improving on its performance
  and adding features (see Table 1).
  The input supply operating range
  is extended from a nominal 5V to the
  entire 3V–30V range. The internal
  reference voltage has decreased, allowing the output to go as low as
  0.6V. An advanced modulation scheme
  facilitates these low duty cycles and
  fast switching frequencies. The two
  channels are still run 180В° out of …

Модельный ряд

Классификация производителя

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

Варианты написания:

LTC1702AIGNTRPBF, LTC1702AIGN TRPBF