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
Removed
• Active High Charge Enable
• Temperature Range: - -40°C to +85°C
• Packaging: - 5-Lead SOT-23
Applications :
Low-Cost Lithium-Ion/Lithium-Polymer Battery
Chargers
• Rechargeable Toys
• Electronic Cigarettes
• Bluetooth Headsets
• USB Chargers
Application Circuit :


