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LTC3576-1

Artículos

• Descargar
  Power Management IC Combines USB On-The-Go and USB Charging in Compact Easy-to-Use Solution &mdash LT Journal
  PDF, 270 Kb, Archivo publicado: jun 1, 2009
  Extracto del documento

  L DESIGN FEATURES Power Management IC Combines
  USB On-The-Go and USB Charging in
  Compact Easy-to-Use Solution
  The USB interface was originally
  designed so that the device providing
  power (an “A” device) would act as the
  host and the device receiving power (a
  “B” device) was the peripheral. The A
  plug of the USB cable would always
  connect to the host device and the B
  plug would connect to the peripheral.
  The USB On-The-Go (OTG) standard,
  however, removes that restriction, so
  that the B device can now become a
  host and the A device can act as a
  peripheral.
  In the USB specification, standard
  hosts and hubs are limited to providing
  500mA to each downstream device,
  but if a device is designated as a USB
  charger, it can supply up to 1.5A. USB
  chargers come in two flavors. A “dedicated charger” is a charger that is not
  capable of data communication with …

• Descargar
  1.2A Monolithic Buck Regulator Shrinks Supply Size and Cost with Programmable Output Current Limit &mdash LT Journal
  PDF, 240 Kb, Archivo publicado: marzo 1, 2009
  Extracto del documento

  L DESIGN FEATURES 1.2A Monolithic Buck Regulator
  Shrinks Supply Size and Cost with
  Programmable Output Current Limit
  by Tom Sheehan Introduction
  Power supplies are often overqualified
  for their job. This is because power
  ICs often specify a current limit that
  is more than twice the rated output
  current of the device. The power supply
  components are sized to handle the
  maximum current that the IC can deliver, even if loads are unlikely to draw
  that current during normal operation.
  The components are bigger and more
  expensive than they need to be.
  There is, however, an alternative:
  set an accurate maximum output current on the supply once the real world
  load is known. Accurately setting the
  maximum output current reduces the
  required current rating of the regulator’s power path components, thus
  replacing big, expensive components
  with smaller, less expensive ones.
  A limit on the regulator’s maximum output limits the maximum power
  dissipation of both the supply and …

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Clasificación del fabricante

• Power Management > PMIC & Multifunction > PMIC (DC/DC, PowerPath and Battery Charger)

Otros nombres:

LTC3576EUFETRPBF, LTC3576EUFE TRPBF