MCP73826 500mA Lithium-Ion Battery Charger

Thursday, 20 June 2013

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 




DATA SHEET OF MCP73826





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