MP2676 Li-Ion Charger Protection IC With Integrated P-MOSFET QFN8

MP2676 Li-Ion Charger Protection IC With Integrated P-MOSFET QFN8

The MP2676 is a highly integrated circuit designed to provide complete Li-ion battery charger protection against input over voltage, input over current and battery over voltage.

Key Specifications

Features

• No External Blocking Diode Requiring
• Input Over Voltage Protection in 1µs
• Input Over Current Protection
• Battery Over Voltage Protection
• Integrated Charging MOSFET
• Temperature Monitoring and Protection
• High Immunity of False Triggering under Startup, Transients

Typical Application Circuit

Applications

• Cell Phones
• MP3 Players
• Smart Phones
• Digital Cameras
• Desktop Chargers "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc.

Design Notes

• Cell measurement accuracy is specified over temperature — calibrate the sense path if the gauge reports state of charge rather than raw voltage.
• Balance current is limited by the bleed resistor and the pack wiring; check the resulting balance time for the capacity mismatch you expect.
• Protection thresholds should sit inside the cell maker's absolute limits with margin for measurement error.
• Keep the sense lines separate from the power path to avoid IR drop corrupting readings.

Common Questions