MCP73861T-I/SL

Overview

The MCP73861T-I/SL is a highly integrated linear lithium-ion/polymer battery charge management controller manufactured by Microchip Technology. It supports single-cell charging with constant current and constant voltage regulation. The device operates within an input voltage range of up to 12V and provides a regulated output voltage of 4.1V for the battery cell. It features a low supply current of 4mA and supports surface mount installation in a 16-SOIC package. The component is designed for applications requiring space-limited solutions and includes built-in thermal regulation capabilities.

Feature Summary

• Highly integrated linear solution for single-cell lithium-ion or polymer battery charging
• Supports system load sharing during charging operations
• Includes thermal regulation to manage heat dissipation automatically

Applications

• Portable electronic devices with space constraints
• Single-cell lithium-ion battery management systems
• Consumer electronics requiring integrated charge management

Procurement Notes

Verify the specific suffix 'I/SL' against the official Microchip datasheet to confirm the industrial temperature range and SOIC-16 package configuration. Ensure compatibility with existing PCB footprints and check for end-of-life status, as some variants may be discontinued. Confirm that the required charging profile matches the 4.1V output specification before procurement.

Selection Notes

Select this component when a compact, single-chip solution for single-cell Li-ion charging is required. It is suitable for designs where board space is limited and external MOSFETs are undesirable. Verify that the application does not require dual-cell support or higher voltage outputs, as this part is optimized for standard single-cell architectures.

Part Context

This part belongs to the MCP738xx family of charge management controllers from Microchip Technology. These controllers are designed to simplify battery charging circuitry by integrating necessary protection and regulation functions into a single IC. The family targets portable applications needing reliable and efficient power management for lithium-based batteries.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Microchip technical support or authorized distributors for verified cross-references.