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  Fast, High Efficiency, Standalone NiMH/NiCd Battery Charging &mdash DN380
  PDF, 92 Kb, Datei veröffentlicht: Nov 28, 2005
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  advertisement Fast, High Efficiency, Standalone NiMH/NiCd Battery Charging
  Design Note 380
  Fran Hoffart
  Introduction
  Although recent popular attention is focused on Lithium
  Ion batteries, one must not forget that other battery
  chemistries, such as Nickel Cadmium (NiCd) and Nickel
  Metal Hydride (NiMH) have advantages in rechargeable
  power systems. Nickel-based batteries are robust, capable
  of high discharge rates, have good cycle life, do not
  require special protection circuitry and are less expensive
  than Li-Ion. Among the two, NiMH batteries are rapidly
  replacing NiCd because of their higher capacity (40% to
  50% more) and the environmental concerns of the toxic
  cadmium contained in NiCd batteries. NiCd/NiMH Battery Charging Basics
  Batteries come in many sizes and capacity ratings.
  When specifying charge current, it is commonly related
  to a battery’s capacity, or simply “C”. The letter “C” is a
  term used to indicate the manufacturers’ stated battery
  discharge capacity which is measured in milliamp-hours
  (mAh). This capacity rating becomes important when
  fast charging because it determines the required charge
  current for proper charge termination. …

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

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