MCP73861T-I/MLG

Overview

The MCP73861T-I/MLG is a single-cell lithium-ion and lithium-polymer battery charge management controller manufactured by Microchip Technology. It operates within an input supply voltage range of 4.5 V to 12 V and delivers a maximum output charging current of 1.2 A. The device regulates the cell voltage to 4.221 V during the constant voltage phase. Designed for surface-mount installation, it utilizes a QFN-16 package. The component supports an industrial operating temperature range from -40°C to +85°C and consumes 4 mA of quiescent current during operation.

Feature Summary

• Highly integrated linear solution for system load distribution and lithium battery charging management
• Supports both lithium-ion and lithium-polymer battery chemistries
• Includes thermal regulation to manage heat dissipation during high-current charging

Applications

• Portable electronic devices with space constraints
• Single-cell lithium-ion battery charging systems
• Lithium-polymer battery management in compact hardware

Procurement Notes

Verify the specific suffix MLG against official Microchip documentation to confirm package and tape-and-reel specifications. Confirm end-of-life status and availability through authorized distributors. Ensure compliance with RoHS requirements as specified in the manufacturer's datasheet before procurement.

Selection Notes

Select this component for applications requiring a single-chip solution for load switch and battery charging functions. Verify that the input voltage source falls within the 4.5 V to 12 V operational range. Ensure the PCB layout accommodates the QFN-16 package and thermal requirements for the intended ambient temperature conditions.

Part Context

This part belongs to the MCP73xx series of charge management controllers from Microchip Technology. These controllers are designed for space-limited applications, combining battery charging and system load path management into a single integrated circuit. The series targets portable consumer electronics requiring efficient power management.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.