MM3474G02VBE

Overview

The MM3474G02VBE is a monolithic integrated circuit designed for battery protection in systems utilizing 3 to 5 series-connected lithium-ion or lithium-polymer rechargeable cells. It provides comprehensive protection against overcharge, overdischarge, and discharge overcurrent conditions, including short-circuit detection. The device operates within an industrial temperature range of -40°C to +85°C and is housed in a 20-terminal TSSOP package with a 0.635 mm pitch. Its maximum supply current is specified at 0.02 mA.

Feature Summary

• Monolithic integration of overcharge, overdischarge, and overcurrent protection functions for multi-cell battery packs
• Capable of detecting short circuits and abnormal current conditions in lithium-ion and lithium-polymer secondary batteries
• Designed for surface-mount assembly in compact electronic devices requiring reliable power management

Applications

• Protection circuits for 3 to 5 cell lithium-ion battery packs
• Protection circuits for 3 to 5 cell lithium-polymer battery packs
• Portable electronic devices requiring multi-cell battery safety management

Procurement Notes

Verify the component authenticity by checking the manufacturer marking on the TSSOP-20 package against official Mitsumi Electric Company Ltd documentation. Confirm the specific suffix 'G02VBE' matches the required pinout and electrical specifications for your design. Ensure the operating environment stays within the -40°C to +85°C industrial temperature rating. Cross-reference the ECCN code EAR99 for export compliance requirements relevant to your region.

Selection Notes

Select this IC when designing protection for battery stacks consisting of three to five series-connected cells. It is suitable for applications requiring low standby current consumption of 0.02 mA. The TSSOP-20 package is appropriate for space-constrained PCB layouts. Ensure the system voltage levels align with the protection thresholds defined in the official datasheet for lithium-based chemistries.

Part Context

This component belongs to the MM3474 series of battery protection ICs manufactured by Mitsumi Electronics Corp. The series includes variants such as MM3474E02VBE and MM3474K02VBE, all targeting similar multi-cell lithium battery protection applications. These devices are part of the broader Power Management (PMIC) portfolio focused on ensuring safety and longevity for portable energy storage systems.

Replacement Considerations

Publicly confirmed substitute part numbers for the MM3474G02VBE were not found in the provided source material. Engineers should consult official distributor databases or contact Mitsumi Electric directly for verified cross-references.