Datasheet Linear Technology LTM8025MPY — Даташит

Datasheets

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Экологический статус

Design Notes

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  How to Produce Negative Output Voltages from Positive Inputs Using a uModule Step-Down Regulator &mdash DN1021
  PDF, 120 Кб, Файл опубликован: 24 май 2011
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  How to Produce Negative Output Voltages from Positive Inputs
  Using a ВµModule Step-Down Regulator
  Design Note 1021
  Jaino Parasseril
  Introduction
  Linear Technology’s DC/DC step-down μModule ®
  regulators are complete switchmode power supplies in a
  surface-mount package. They include the DC/DC controller, inductor, power switches and supporting circuitry.
  These highly integrated regulators also provide an easy
  solution for applications that require negative output
  voltages. In other words, these products can operate as
  inverting buck-boost regulators. As a result, the lowest
  potential in the circuit is not the standard 0V, but –VOUT,
  which must be tied to the μModule regulator’s GND. All
  signals are now referred to –VOUT.
  For this discussion, the LTMВ®8025 (36V, 3A) is used to
  demonstrate how a buck ОјModule regulator can be altered
  to produce a negative output voltage with level-shifting
  circuitry for synchronization. This approach can be applied to other ОјModule regulators, such as the LTM8022
  (36V, 1A), LTM8023 (36V, 2A) and LTM8027 (60V, 4A).
  Design Guide
  A conventional buck (step-down) ОјModule regulator
  can be easily conп¬Ѓgured to generate negative output …

Статьи

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  Self-Contained 3A uModule Buck Regulator Produces 0.8V-24V Output from 3.6V-36V Input &mdash LT Journal
  PDF, 191 Кб, Файл опубликован: 1 сен 2009
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  L DESIGN IDEAS Self-Contained 3A µModule Buck
  Regulator Produces 0.8V–24V Output
  by David Ng
  from 3.6V–36V Input
  Introduction AUX
  GND Ask any group of engineers, “What
  would you do with a 3A DC/DC converter?” and you will probably get a
  wide range of answers—from powering
  a DSP rail at 1.8V to running a bank
  of 24V switching I/O. Typically, these
  two particular applications would
  require completely different DC/DC
  controller ICs and topologies. However, the LTM8025 ВµModule DC/DC
  converter can satisfy the requirements
  of these and just about any other 3A
  applications.
  The LTM8025 3A ВµModule DC/DC
  buck converter operates from 3.6V to
  36V inputs to produce output voltages
  as low as 0.8V and as high as 24V.
  Furthermore, the LTM8025 features
  single cycle Burst ModeВ® operation,
  so it is able to handle a wide range …

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• µModule Solutions > µModule Regulators > µModule Buck Regulators | Extended Temperature (H & MP) µModule Regulators