Microchip | MCP73843-420I/MS

The MCP73843 combines high accuracy constant-voltage (0.5% max), constant-current regulation, cell preconditioning, advanced safety timers, automatic charge termination, and charge status indication in a space saving MSOP-8 package.

The device provides a complete, fully functional, stand-alone charge management solution for applications utilizing single cell Lithium-Ion or Lithium-Polymer battery packs. Two preset voltage regulation options are available, 4.1 V and 4.2 V, for use with either coke or graphite anodes. The MCP73843 operates with an input voltage range of 4.5 V to 12 V and is fully specified over the ambient temperature range of -40°C to +85°C. 

Features:

• Safety Charge Timers
• Automatic Charge Termination
• Automatic Recharge
• Charge Status Indicator
• High Accuracy Voltage Regulation: 0.5% (Max)
• Automatic Preconditioning of Deeply Depleted Cells
• Shutdown Current: 0.25 µA (Typical)
• No Inductor Required
• Programmable Charge Current
• Automatic Power-Down When Input Power Removed
• –40°C to +85°C Ambient Operating Temperature range

Applications:

• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Hand-Held Instruments
• Cradle Chargers
• Digital Cameras
• MP3 Players