Datasheet Linear Technology LTC3605 — Даташит

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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Design Notes

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  15VIN, 4MHz Monolithic Synchronous Buck Regulator Delivers 5A in 4mm Г— 4mm QFN &mdash DN467
  PDF, 101 Кб, Файл опубликован: 29 май 2009
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  15VIN, 4MHz Monolithic Synchronous Buck Regulator Delivers
  5A in 4mm × 4mm QFN – Design Note 467
  Tom Gross
  Introduction
  The LTC®3605 is a high efficiency, monolithic synchronous
  step-down switching regulator that is capable of delivering
  5A of continuous output current from input voltages of
  4V to 15V. Its compact 4mm Г— 4mm QFN package has
  very low thermal impedance from the IC junction to the
  PCB, such that the regulator can deliver maximum power
  without the need of a heat sink. A single LTC3605 circuit
  can power a 1.2V microprocessor directly from a 12V
  rail—no need for an intermediate voltage rail.
  The LTC3605 employs a unique controlled on-time/constant frequency current mode architecture, making it ideal
  for low duty cycle applications and high frequency operation. There are two phase-lock loops inside the LTC3605:
  one servos the regulator on-time to track the internal
  oscillator frequency, which is determined by an external
  timing resistor, and the other servos the internal oscillator
  to an external clock signal if the part is synchronized. Due
  to the controlled on-time design, the LTC3605 can achieve
  very fast load transient response while minimizing the
  number and value of external output capacitors.
  The LTC3605’s switching frequency is programmable from …

Статьи

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  15VIN, 4MHz Monolithic Synchronous Buck Regulator Delivers 5A in 4mm × 4mm QFN &mdash LT Journal
  PDF, 307 Кб, Файл опубликован: 1 июн 2009
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  DESIGN IDEAS L 15VIN, 4MHz Monolithic
  Synchronous Buck Regulator
  Delivers 5A in 4mm Г— 4mm QFN
  Introduction
  The LTC3605 is a high efficiency,
  monolithic synchronous step-down
  switching regulator that is capable
  of delivering 5A of continuous output
  current from input voltages of 4V to
  15V. Its compact 4mm Г— 4mm QFN
  package has very low thermal impedance from the IC junction to the PCB,
  such that the regulator can deliver
  maximum power without the need of
  a heat sink. A single LTC3605 circuit
  can power a 1.2V microprocessor
  directly from a 12V rail—no need for
  an intermediate voltage rail.
  The LTC3605 employs a unique controlled on-time/constant frequency
  current mode architecture, making
  it ideal for low duty cycle applications
  and high frequency operation. There
  are two phase-lock loops inside the
  LTC3605: one servos the regulator …

Модельный ряд

Классификация производителя

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