MCP73863T-I/ML

Overview

The MCP73863T-I/ML is a single-cell lithium-ion or lithium-polymer battery charge management controller manufactured by Microchip Technology. It operates within an input voltage range of up to 12 V and supports a maximum programmable charging current of 1.2 A. The device provides precise regulation with a fixed output voltage of 4.1 V or 4.2 V, selectable via external resistors. It functions reliably across an industrial temperature range from -40°C to +85°C. The component is housed in a compact 16-lead QFN (4x4 mm) surface-mount package, designed for efficient thermal performance and space-constrained applications.

Feature Summary

• Integrates full charge cycle management including constant-current and constant-voltage phases with automatic termination
• Features a built-in timer for safety monitoring to prevent overcharging conditions
• Includes thermal regulation circuitry to reduce charging current when die temperature exceeds safe limits
• Provides status indication outputs for charge completion and fault detection

Applications

• Portable electronic devices requiring single-cell Li-ion or Li-Polymer power sources
• Medical equipment utilizing rechargeable battery systems
• Industrial handheld instruments and sensors
• Consumer electronics such as tablets and smartphones

Procurement Notes

Verify the specific suffix ML indicates the 16-QFN package configuration. Confirm the I suffix denotes the industrial temperature grade (-40°C to +85°C). Ensure compatibility with the target PCB footprint for the 4x4 mm QFN package. Cross-reference the exact part number against official Microchip documentation to confirm pinout and electrical specifications before integration.

Selection Notes

Select this component for applications requiring a compact solution for single-cell lithium-based batteries. It is suitable where space constraints favor a QFN package over larger SOIC options. Consider the 1.2 A current capability relative to the battery capacity. Verify that the system design can accommodate the required external programming resistors for voltage and current settings.

Part Context

This device belongs to the MCP7386x family of charge management controllers. It shares functional similarities with other models in the series but differs in package type and specific electrical characteristics. The ML suffix specifically identifies the leadless quad flat no-lead package variant, distinguishing it from SOIC or MSOP versions within the same product line.

Replacement Considerations

Direct pin-to-pin replacements may include other MCP7386x variants with compatible packages. Verify equivalent current ratings and voltage accuracy. Check for identical thermal management requirements and package dimensions to ensure mechanical fit without redesigning the PCB layout.