Description
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.

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
• No End-of-Charge Control
• No Undervoltage Lockout (UVLO)
• 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