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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Статьи

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  Efficient, Flexible Boost Converter Fits into Charge-Pump Footprint &mdash LT Journal
  PDF, 180 Кб, Файл опубликован: 1 фев 2004
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  DESIGN IDEAS Efficient, Flexible Boost Converter Fits
  into Charge-Pump Footprint by Eddy Wells
  Introduction Handheld devices often use low
  power step-up DC/DC converters to
  power displays, LEDs and I/O circuitry, or to charge alternate power
  sources. Capacitive charge-pumps
  or inductor-based boost converters
  are the two most common solutions
  to step-up conversion, and each has
  certain advantages and trade-offs. A
  charge-pump converter offers a simple,
  compact solution, but it has a limited
  range of VIN to VOUT ratios, such as 3.3V
  to 5V. A traditional boost converter
  offers more efficient operation and a
  greater range of step-up ratios, but
  boost solutions typically take more
  space, and systems issues such as
  inrush current and short circuit protection are often solved with added
  external circuitry.
  The LTC3459 is a small, synchronous boost converter that addresses
  many issues found in a traditional
  boost converter. The LTC3459 offers Burst Mode operation for high …

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  Power Supply Tracking for Linear Regulators &mdash LT Journal
  PDF, 267 Кб, Файл опубликован: 25 мар 2005
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  DESIGN FEATURES Power Supply Tracking for
  Linear Regulators
  Introduction (see “Versatile Power Supply Tracking
  without MOSFETs” from Linear Technology Magazine, February, 2004 ) but
  it is easily adapted to linear regulators,
  including popular low-dropout (LDO)
  types. Summarized here are several
  techniques for controlling linear regulators with the LTC2923. The LTC2923 provides simple and
  versatile control over the power-up
  and power-down behavior of switching
  power supplies. It allows several supplies to track the voltage of a master
  supply, so that their relative voltages
  meet the stringent specifications for
  the power up of modern digital
  semiconductors, such as DSPs, microprocessors, FPGAs and ASICs. The
  LTC2923 is specifically designed to
  work with switching power supplies Monolithic Regulators
  Table 1 lists three popular monolithic
  linear regulators that have been tested
  with the LTC2923. Using these three Table 1. New monolithic linear regulators Regulator IOUT(MAX) (V) VIN(MIN) (V) VIN(MAX) (V) VDROPOUT (V) LT3020 100mA 0.9 10 0.15 LTC1844 150mA 1.6 6.5 0.11 LTC3025 300mA 0.9 5.5 0.045 3.3V IN
  2.2ВµF 3.3V CGATE
  0.1ВµF 0.1ВµF
  VCC GATE OFF ON ON SHDN …

Модельный ряд

Классификация производителя

• Power Management > LDO Linear Regulators > Positive Linear Regulators (LDO)

Варианты написания:

LTC1844ES5-2.8PBF, LTC1844ES5-2.8 PBF, LTC1844ES52.8#PBF, LTC1844ES5 2.8#PBF