MM3220M04NRH

Overview

The MM3220M04NRH is a battery protection integrated circuit designed for two-cell lithium-ion or lithium-polymer battery packs. Manufactured by Mitsumi Electric, it operates within an ambient temperature range of -40°C to 85°C and utilizes a surface-mount SOT-26A package. The device provides comprehensive protection against overcharge, over-discharge, overcurrent, and short-circuit conditions, ensuring safe operation in portable electronic applications requiring reliable power management.

Feature Summary

• Provides dual-cell battery protection for lithium-ion and lithium-polymer chemistries
• Integrates overcharge, over-discharge, overcurrent, and short-circuit safeguards
• Operates reliably across extended industrial temperature ranges

Applications

• Two-cell lithium-ion battery pack protection
• Lithium-polymer battery management systems
• Portable consumer electronics power safety circuits

Procurement Notes

Verify the specific part marking and package configuration upon receipt to ensure alignment with the SOT-26A specification. Confirm that the received components match the manufacturer's batch documentation. Inspect leads for integrity before soldering. Ensure storage conditions remain within specified limits to prevent moisture absorption or physical damage prior to assembly into final products.

Selection Notes

Select this component when designing circuits requiring protection for two-series connected lithium cells. It is suitable for applications needing integrated fault detection without external sensing resistors. Consider the thermal performance and package size constraints during PCB layout. Ensure the input voltage ratings align with the maximum cell voltage expectations of the target battery system design.

Part Context

This IC belongs to the MM3220 series from Mitsumi Electric, which focuses on battery protection solutions. The series includes variants tailored for different cell counts and protection thresholds. This specific model addresses the needs of compact, high-density battery assemblies common in modern mobile devices and IoT sensors.

Replacement Considerations

Direct substitutes include other MM3220 series variants such as MM3220AA1NRH for single-cell applications, though pinouts and protection thresholds may differ. Verify compatibility with existing PCB footprints and control logic before swapping.