MCP73871T-2CCI/ML

Overview

The MCP73871T-2CCI/ML is a standalone system load sharing and Li-Ion/Li-Polymer battery charge management controller manufactured by Microchip Technology. It integrates linear power path management with ideal diode operation to simultaneously power the system load and charge the battery. The device supports input power sources including AC-DC wall adapters and USB ports, adhering to USB current limits. It features voltage proportional current control (VPCC) to prioritize system load over charging. Key electrical parameters include a maximum total input current of 1.8A, a maximum charge current of 1.1A, and a preset charge voltage of 4.20V with ±0.5% regulation tolerance. It operates within a supply voltage range of 3.75V to 6V and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrated system load sharing and battery charge management with voltage proportional current control
• Low-loss power-path management with ideal diode operation for autonomous source selection
• Complete linear charge management controller with integrated pass transistors and reverse discharge protection
• Supports selectable input power sources from USB ports or AC-DC wall adapters

Applications

• Portable electronic devices requiring simultaneous system operation and battery charging
• USB-powered applications needing compliant current limiting
• AC-DC adapter powered systems with backup battery support
• Li-Ion and Li-Polymer single-cell battery management in compact form factors

Procurement Notes

Verify the specific suffix '2CCI' corresponds to the 4.20V preset voltage option when ordering. Confirm the 'ML' package designation matches the required 20-QFN footprint for your PCB layout. Ensure compatibility with your input source type, as the device manages both USB and AC-DC inputs. Check moisture sensitivity level requirements for your assembly process. Validate that the thermal performance meets your application's ambient conditions.

Selection Notes

Select this component when system load priority is critical during charging phases. The VPCC feature ensures stable system operation even under high load conditions. Choose this part for designs requiring a single-chip solution for both power path management and charge control. Consider the 20-QFN package size constraints and thermal dissipation capabilities. Verify that the 1.1A charge current limit aligns with your battery specifications.

Part Context

The MCP73871 series belongs to Microchip's portfolio of standalone battery charge management controllers designed for portable applications. This specific variant, MCP73871T-2CCI/ML, is part of the tape-and-reel product line, indicated by the 'T' suffix, suitable for automated surface-mount assembly. It shares core functionality with other MCP73871 variants but differs in preset voltage options and packaging.

Replacement Considerations

MCP73871-2CCI/ML is a parameter-equivalent alternative available in tube packaging instead of tape-and-reel.