Microchip Technology, Inc. Advanced Single/Dual Lithium-Ion/Li-Polymer Charge Management Controller en010555

The MCP73844 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 dual series cell Lithium-Ion or Lithium-Polymer battery packs. Two preset voltage regulation options are available, 8.2V and 8.4V, for use with either coke or graphite anodes. The MCP73844 operates with an input voltage range of 8.7V to 12V and is fully specified over the ambient temperature range of -40°C to +85°C. Additional 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: 0.25µA (Typical) No Inductor Required Programmable Charge Current Automatic Power-Down When Input Power Removed –40°C to +85°C Ambient Operating Temperature Range