MCP73871-1CCI/ML

Overview

The MCP73871-1CCI/ML is a fully integrated linear battery charger and power path management controller designed for single-cell lithium-ion or lithium-polymer batteries. It supports simultaneous charging and system load sharing from USB or AC-DC adapter inputs. The device features an internal transmission transistor, programmable charge current up to 1.1A, and selectable termination voltages of 4.10V, 4.20V, 4.35V, or 4.40V. It operates within a supply voltage range of 3.75V to 6V and includes thermal regulation to limit current during high temperatures.

Feature Summary

• Integrated power path management enables seamless transition between input power and battery supply without system interruption.
• Supports intelligent load balancing allowing simultaneous charging and operation from USB or AC-DC sources.
• Includes built-in thermal regulation that automatically reduces charge current based on die temperature.
• Features multiple status indicators for low battery, power ready, and charge state via LED outputs.

Applications

• Portable IoT sensor nodes requiring extended standby times
• Space-constrained handheld devices with complex functionality
• Wireless communication modules using Bluetooth Low Energy or Zigbee
• Battery-powered consumer electronics with USB recharging capabilities

Procurement Notes

Verify the specific suffix '1CCI' corresponds to the required 4.35V termination voltage option before ordering. Confirm the 20-QFN package dimensions match the PCB footprint design. Ensure compatibility with the intended input voltage source, as the device requires a regulated supply between 3.75V and 6V. Check for RoHS compliance documentation if required by regional regulations.

Selection Notes

Select this component when space optimization is critical due to its compact QFN packaging. Choose this model over simpler chargers if automatic power path switching and load sharing are required to maintain system uptime. Consider the available termination voltage options (4.10V to 4.40V) to match the specific battery chemistry requirements. Evaluate the need for external thermistor monitoring if precise thermal protection beyond internal die sensing is necessary.

Part Context

This part belongs to the MCP73xx series of charge management controllers from Microchip Technology. These controllers are designed for highly integrated battery charging solutions in portable applications. The series typically offers various pin counts and feature sets to accommodate different system complexity levels while maintaining small form factors.

Replacement Considerations

MCP73871-1AAI/ML: Different termination voltage setting. MCP73871-1CAI/ML: Different termination voltage setting. MCP73871-1CCI/ML: Same termination voltage but verify package availability.