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Корпус / Упаковка / Маркировка

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Экологический статус

Design Notes

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  Dual Output Monolithic Synchronous Buck Regulator Operates from 3.6V to 15V Inputs and Delivers 3A Per Channel &mdash DN1020
  PDF, 542 Кб, Файл опубликован: 10 ноя 2010
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  advertisement Dual Output Monolithic Synchronous Buck Regulator Operates
  from 3.6V to 15V Inputs and Delivers 3A Per Channel – Design Note 1020
  Tom Gross
  Introduction
  The LTC3633 is a high efficiency, dual output monolithic
  synchronous step-down switching regulator, capable of
  delivering 3A of output current per channel from input
  voltages between 3.6V and 15V. Its compact 4mm Г— 5mm
  QFN package has very low thermal impedance eliminating
  the need for an external heat sink. Its high input voltage
  capability makes the LTC3633 ideal for 12V distributed
  power systems.
  1.8V and 3.3V 2MHz Buck Regulator
  Figure 1 shows a LTC3633 12VIN to 1.8VOUT and 3.3VOUT,
  3A, buck regulator. With the frequency setting pin, RT,
  connected to the internal 3.3V regulator rail (INTVCC), this
  circuit runs at 2MHz —the LTC3633 switching frequency
  is programmable from 500kHz to as high as 4MHz, and
  can also be synchronized to an external clock—reducing
  the value and size of the output capacitors and inductor.
  Even with this high switching frequency, the efficiency of
  this circuit is good: 87% at full load for the 3.3V regulator and 82% at full load for the 1.8V regulator, at 12VIN
  (see Figure 2). …

Модельный ряд

Классификация производителя

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

Варианты написания:

LTC3633IFEPBF, LTC3633IFE PBF