MCP73861-I/ML

Overview

The MCP73861-I/ML is a single-cell lithium-ion or lithium-polymer battery charge management controller manufactured by Microchip Technology. It integrates linear charge regulation, current sensing, and thermal monitoring within a compact 16-lead QFN package. The device supports standard charging profiles including preconditioning, constant-current, and constant-voltage phases with automatic termination.

Feature Summary

• Integrated linear pass transistor for space-constrained designs
• Automatic end-of-charge control and safety timers
• Thermal regulation to manage heat dissipation
• Reverse blocking protection against source reversal

Applications

• Portable consumer electronics
• Medical devices
• Industrial handheld tools
• IoT sensor nodes

Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm RoHS compliance and lead-free packaging specifications prior to integration. Review datasheet revisions for any parameter updates affecting design continuity.

Selection Notes

Select this controller for applications requiring high accuracy and minimal external components. Ensure input voltage range matches the system power supply. Validate thermal performance under maximum load conditions given the integrated pass element.

Part Context

This component belongs to the MCP738xx family of charge management controllers designed for cost-sensitive and space-limited environments. It provides a complete solution for single-cell battery charging without requiring external MOSFETs or sense resistors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative models from the same manufacturer family based on pin compatibility and electrical specifications.