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  New Dual Input USB/AC Linear Li-Ion Battery Chargers &mdash LT Journal
  PDF, 147 Kb, Datei veröffentlicht: Nov 21, 2006
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  DESIGN IDEAS L New Dual Input USB/AC Linear
  by Alfonso Centuori
  Li-Ion Battery Chargers
  Introduction Digital Cameras, PDAs, mobile phones
  and MP3 players all use batteries that
  are commonly charged via either a
  wall adapter or through the USB. The
  LTC4076 and LTC4077 lithium-ion
  battery chargers are specifically designed to detect power at the inputs
  and automatically select the appropriate source for charging. Using a
  constant current/constant voltage
  algorithm, the chargers can be programmed to deliver up to 950mA of
  charge current with a final float voltage accuracy of ±0.6%. The LTC4076
  and LTC4077 include an internal Pchannel power MOSFET and thermal
  regulation circuitry with no blocking
  diode or external sense resistor required. Thus, the basic dual-source
  charger requires only three external
  components.
  The LTC4076 offers a programmable current based termination
  scheme. The CHRG open-drain status
  pin can be programmed to indicate
  the battery charge state according to
  the needs of the application. The PWR …

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• Power Management > Battery Management > Battery Charger IC > Linear Battery Chargers

Andere Namen:

LTC4077EDDTRPBF, LTC4077EDD TRPBF