MCP73861-I/SL

Overview

The MCP73861-I/SL is a highly integrated single-cell lithium-ion or lithium-polymer battery charge management controller manufactured by Microchip Technology. It supports input voltages up to 12V and delivers a programmable charging current of up to 1200mA. The device features an internal power path manager for system load distribution, allowing operation from sources such as USB ports or wall adapters. It operates within an industrial temperature range of -40°C to +85°C and is housed in a 16-pin SOIC package.

Feature Summary

• Fully integrated linear charger with built-in power path management for seamless source switching
• Supports standard Li-Ion and Li-Polymer cell chemistries with configurable termination voltage
• Includes thermal regulation and safety timer functions to ensure safe charging operations

Applications

• Portable consumer electronics requiring compact battery solutions
• USB-powered devices needing integrated power path management
• Industrial control systems operating in extended temperature environments

Procurement Notes

Verify the specific suffix (e.g., SL vs MLG) against the required package type, as variations exist between SOIC and QFN formats. Confirm availability status, as some variants may be discontinued or subject to limited supply constraints. Ensure the selected component matches the intended operating temperature range and input voltage requirements for the target application design.

Selection Notes

Select this component when a single-chip solution for single-cell lithium batteries is required. It is suitable for applications where space is limited and external MOSFETs are undesirable. Consider the 1200mA output capability and 12V maximum input rating to ensure compatibility with the available power source and battery capacity needs.

Part Context

This part belongs to the MCP7386x family of charge management controllers designed for space-constrained applications. The family includes variants supporting different packages and pin configurations, such as the MCP73862 and MCP73863. These controllers share common architectural features focused on high integration and simplified design implementation for portable devices.

Replacement Considerations

Direct substitutes include other members of the MCP7386x family, such as the MCP73862 or MCP73863, provided pin compatibility and package types match. Verify that alternative components support the same 1200mA current rating and 12V input limit.