MCP73871-4CCI/ML

Overview

The MCP73871-4CCI/ML is a fully integrated linear charge management controller for single-cell lithium-ion and lithium-polymer batteries. It features system load sharing, allowing simultaneous power delivery to the system and battery charging from AC-DC adapters or USB ports. The device includes an integrated pass transistor and reverse discharge protection. This specific variant offers a fixed 4.40V charge voltage termination option with ±0.5% regulation tolerance. It supports up to 1.8A total input current control and operates within a -40°C to +85°C temperature range in a 20-QFN package.

Feature Summary

• Integrated system load sharing enables simultaneous operation of the host system and battery charging without interruption during source transitions.
• Voltage proportional current control prioritizes system load requirements over battery charging current to maintain stable operation under varying conditions.
• Fixed 4.40V charge voltage termination provides precise regulation for specific high-voltage lithium-ion cell requirements.

Applications

• Portable consumer electronics requiring seamless power path management
• IoT sensor nodes and edge computing devices
• Wireless communication modules and gateways

Procurement Notes

Verify the suffix '4CCI' confirms the 4.40V fixed voltage setting against your battery specifications. Ensure the 20-QFN package dimensions match your PCB footprint. Confirm thermal design adequacy for the expected load and ambient temperatures. Check RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this part when a fixed 4.40V termination voltage is required for the target battery chemistry. The integrated load sharing simplifies design compared to discrete solutions. Consider the 1.8A total current limit when sizing external components and traces. Verify that the USB port current limits align with your application's power budget.

Part Context

The MCP73871 series serves as a comprehensive power management solution for portable devices. It consolidates charging, load switching, and protection functions into a single compact component. The family offers various voltage options to accommodate different lithium-ion cell types while maintaining consistent interface and feature sets across variants.

Replacement Considerations

MCP73871-4CAI/ML

FAQ

What is the specific charge voltage termination for the MCP73871-4CCI/ML?

This variant has a fixed charge voltage termination of 4.40V with ±0.5% regulation tolerance.

How does the MCP73871 handle power source transitions?

It automatically selects between the input source (AC-DC or USB) and the battery, ensuring continuous power to the system load during transitions.