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Корпус / Упаковка / Маркировка

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Экологический статус

Design Notes

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  Efficient Dual Polarity Output Converter Fits into Tight Spaces &mdash DN318
  PDF, 82 Кб, Файл опубликован: 2 авг 2003
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  advertisement Efficient Dual Polarity Output Converter Fits into Tight Spaces
  Design Note 318
  Keith Szolusha
  Introduction
  This Design Note describes a compact and efficient ±5V
  output dual polarity converter that uses a single buck
  regulator. The topology shown features 3mm maximum
  circuit height, high efficiency and low output voltage
  ripple on a 5V output—important considerations for
  many battery-powered, handheld and noise-sensitive
  devices. This combination of features is not easily
  achievable with other commonly used dual polarity
  topologies. For instance, one alternative topology, a
  flyback converter using a boost regulator, is relatively
  inefficient, requires a bulky (5mm or taller) transformer
  and generates high output voltage ripple. Another alternative, using two buck regulators, incurs both the
  cost of the additional regulator and the cost of the PCB
  real estate it occupies.
  The single buck regulator topology shown here requires
  few components. To reduce the maximum circuit height,
  it uses two power inductors instead of a transformer.
  In the absence of the transformer core, the coupling
  capacitor allows energy to pass between the positive …

Статьи

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  60V/3A Step-Down DC/DC Converter Maintains High Efficiency over a Wide Range of Input Voltages &mdash LT Journal
  PDF, 179 Кб, Файл опубликован: 9 авг 2004
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  DESIGN FEATURES 60V/3A Step-Down DC/DC Converter
  Maintains High Efficiency over a Wide
  by Mark W. Marosek
  Range of Input Voltages
  Introduction
  sients as high as 60V). It is designed
  to maintain excellent efficiencies at
  both high and low input-to-output
  voltage differentials over a wide input
  voltage range. Its current mode architecture adds flexible frequency
  compensation with no restriction on
  the use of a ceramic output capacitor—resulting in small solutions with
  extremely low output ripple voltage.
  The LT3430 is pin compatible with
  the LT1766 (60V, 1.5A, 200kHz) and
  LT1956 (60V transient, 1.5A, 500kHz)
  step down DC/DC converters.1 The LT3430 is a monolithic step-down
  DC/DC converter that features a 3A
  peak switch current limit and the
  ability to operate with up to 60V input. The LT3430 runs at a fixed
  frequency of 200kHz and is packaged
  in a small thermally enhanced 16-pin
  TSSOP package to save space and …

Модельный ряд

Классификация производителя

• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck | High Input Voltage Buck

Варианты написания:

LT1956IFETRPBF, LT1956IFE TRPBF