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  3-in-1 Device Replaces Battery Charger, Overvoltage Protection and PowerPath Manager for USB/Battery Powered Devices &mdash LT Journal
  PDF, 275 Kb, 档案已发布: Jun 14, 2007
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  DESIGN IDEAS L 3-in-1 Device Replaces Battery
  Charger, Overvoltage Protection
  and PowerPath Manager for
  USB/Battery Powered Devices
  by Andy Bishop Introduction
  An efficient Li-Ion battery powered
  system requires at least three distinct
  circuits to control the power path
  between the load, the battery and the
  power source (see FigureВ 1). The minimal circuit requirements include:
  q a battery charger,
  q a power switch to select powering
  the load from either the battery or
  the wall adapter (when present),
  q and a current regulator for the
  wall adapter/USB input.
  This, of course, assumes that the
  load draws power from a communal
  power bus, as opposed to attaching
  directly and exclusively to the battery.
  A direct-to-battery topology might be
  simpler, precluding the need for the
  power path controller and regulator, …

模型线

制造商分类

• Power Management > PMIC & Multifunction > USB Power Manager (PowerPath, Battery Charger)

其他名称:

LTC4067EDETRPBF, LTC4067EDE TRPBF