MM3508B09RRE

Overview

The MM3508B09RRE is a secondary protection integrated circuit designed for battery management systems. It supports lithium-ion and lithium-polymer chemistries with configurations for two to four cells in series. The device provides fault protection against overvoltage conditions and short circuits. It is housed in a compact 6-WFDFN exposed pad package, suitable for space-constrained portable electronics.

Feature Summary

• Provides secondary protection for multi-cell lithium-based battery packs
• Detects and mitigates overvoltage and short circuit faults
• Compatible with lithium-ion and lithium-polymer battery chemistries

Applications

• Portable electronic devices requiring multi-cell battery protection
• Lithium-ion polymer battery pack management systems
• Consumer electronics with secondary safety circuitry requirements

Procurement Notes

Verify the specific suffix RRE corresponds to the required tape and reel packaging configuration. Confirm RoHS3 compliance status if environmental regulations apply to your assembly process. Ensure the 6-WFDFN package footprint matches your PCB design constraints before finalizing procurement orders.

Selection Notes

Select this component when secondary protection is required for 2 to 4 series cell configurations. It is appropriate for applications needing dedicated overvoltage and short circuit monitoring distinct from primary control functions. Consider the exposed pad thermal performance and package dimensions relative to available board space.

Part Context

This part belongs to Mitsumi's battery protection IC family, specifically engineered for multi-cell lithium battery safety. It serves as a secondary protection layer, complementing primary management circuits by isolating the battery during critical fault events such as excessive voltage or current surges.

Replacement Considerations

The MM3508B07RRE is a related variant within the same product line. Verify pin compatibility and specific threshold settings before substitution, as differences may exist between variants regarding exact protection parameters or package options.