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MCP73826 li-ion battery charger circuit schematic

MCP73826 500mA Lithium-Ion Battery Charger

Here is presented a simple 500mA 4.1V or 4.2V Li-ion battery charger that is constructed with the MCP73826 linear charge management controller. There are two versions of this controller MCP73826-4.1 that is preset to a regulation voltage of 4.1V and MCP73826-4.2 with a preset of 4.2V.

The IC operates with input voltage between 4.5V to 5.5V. Typical applications are:

  • single cell Lithium-Ion battery chargers
  • personal data assistants
  • cellular telephones
  • hand held instruments
  • cradle chargers
  • digital cameras

Typical Circuit Schematic

MCP73826 li-ion battery charger circuit schematic

2 Comments

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  • Samu

    I’ve been loonkig for a post like this forever (and a day)

  • mustapha_kazaure

    hi this project is awesome is really helpful, but pls sir am working on a project that i can build to charge a cellphone like 25-30 at a time, and i want do it in such a way that it has to source of power i.e from solar panel and other one from normal a.c power of 220v, what i mean is to have a 25-30 diffrnce mouth of charger coming from the circuit so dat i can charge them simultaneously at a time, but what i am thinking is to use like ic LM317 to be varying the output, in which let say if i connect maybe 1-10 cellphone at a time so there if range of voltage i can select to charge them, and also if it like from 11-20 also there is certain voltage which am going to select. pls sir i dont knw if there is any way to help me out to modify your schematic. thank you sir.

Loooking for the latest from TI?