MCP73812 : Charge Controller

You are currently viewing MCP73812 : Charge Controller
  • Post author:
  • Reading time:1 mins read

The MCP73811/2 devices are linear charge management controllers that are designed for use in space limited and cost sensitive applications. The MCP73811/2 provide specific charge algorithms for single cell Li-Ion or Li-Polymer battery to achieve optimal capacity in the shortest charging time possible. Along with its small physical size, the low number of external components required make the MCP73811/2 ideally suited for portable applications. For applications charging from a USB port, the MCP73811 adheres to all the specifications governing the USB power bus.

Pin out :

Features :

Complete Linear Charge Management Controller

  • Integrated Pass Transistor
  • Integrated Current Sense
  • Integrated Reverse Discharge Protection
    • Constant Current / Constant Voltage Operation
    with Thermal Regulation
    • High Accuracy Preset Voltage Regulation: + 1%
    • Voltage Regulation: 4.20V
    • Selectable Charge Current:
  • MCP73811: 85 mA / 450 mA
    • Programmable Charge Current:
  • MCP73812: 50 mA – 500 mA
    • Minimum External Components Required:
  • MCP73811: 2 Ceramic Capacitors
  • MCP73812: 2 Ceramic Capacitors and
    1 Resistor
    • No Preconditioning
    • External End-of-Charge Control
    • Automatic Power-Down when Input Power
    • Active High Charge Enable
    • Temperature Range:
  • -40°C to +85°C
    • Packaging:
  • 5-Lead SOT-23

Applications :

Low-Cost Lithium-Ion/Lithium-Polymer Battery
• Rechargeable Toys
• Electronic Cigarettes
• Bluetooth Headsets
• USB Chargers

Application Circuit :

Farees Ahmed

The aim of this blog is to serve as a quick reference guide for the Curious. Appreciate your feedback and comments !