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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Design Notes

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  One IC Generates Three Sub-2V Power Rails from a Li-Ion Cell &mdash DN419
  PDF, 101 Кб, Файл опубликован: 26 июн 2007
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  One IC Generates Three Sub-2V Power Rails from a Li-Ion Cell
  Design Note 419
  Frank Lee
  Introduction
  Shrinking geometries in IC technology have pushed the
  operating voltages of today’s electronics well below 2V,
  presenting a number of design challenges. One common
  problem is the need for multiple supply voltages: for
  example, one voltage for a CPU core, another for I/O and
  still others for peripherals. Sensitive RF, audio and analog
  circuitry may require additional dedicated quiet supplies,
  separate from less noise-sensitive digital circuits. As the
  number of supplies increases, it becomes impractical
  to use a separate power supply IC for each voltage and
  special-requirements subsystem. Board area would be
  quickly consumed by power supplies. One solution to
  the space crunch is power supply integration, provided
  by a triple regulator like the LTC®3446—three voltages
  from a single IC.
  Triple Supply in a Tiny Package
  The LTC3446 combines a 1A synchronous buck regulator with two 300mA very low dropout (VLDO TM) linear
  regulators to provide up to three stepped-down output voltages from a single input voltage, all in a tiny
  3mm Г— 4mm DFN. The 2.7V to 5.5V input voltage range …

Модельный ряд

Классификация производителя

• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | Buck Regulator Plus LDO
• Power Management > PMIC & Multifunction > Multitopology DC/DC

Варианты написания:

LTC3446EDEPBF, LTC3446EDE PBF