MM3474L03VBE

Overview

The MM3474L03VBE is a monolithic integrated circuit designed for battery protection, specifically supporting 3 to 5 cells of lithium-ion or lithium-polymer rechargeable secondary batteries. Manufactured by Mitsumi Electric Co Ltd, this component functions as a power supply support circuit within the MM3474 series. It is housed in a TSSOP-20 package with a shrink pitch and dual gull-wing terminals. The device operates within an industrial temperature range from -40 °C to +85 °C and utilizes plastic/epoxy packaging material.

Feature Summary

• Provides comprehensive protection against overcharge conditions for individual cells within multi-cell battery packs.
• Detects and mitigates risks associated with overdischarge states to preserve battery integrity.
• Monitors and interrupts discharge overcurrent paths to prevent short circuit damage.

Applications

• Protection circuits for 3 to 5 cell lithium-ion battery packs
• Safety management systems for lithium-polymer rechargeable secondary batteries
• Power supply support applications requiring cell-level monitoring

Procurement Notes

Verify the specific suffix 'L03' against official Mitsumi documentation to confirm pinout compatibility and functional distinctions within the MM3474 family. Ensure the procurement source provides valid datasheets confirming the TSSOP20 package and industrial temperature rating. Cross-reference the manufacturer part number to avoid confusion with similar variants in the series.

Selection Notes

Select this component when designing protection circuits for multi-cell lithium-based battery systems requiring integrated detection capabilities. Consider the TSSOP-20 surface mount package constraints and the specified industrial operating temperature range. Evaluate the need for simultaneous overcharge, overdischarge, and overcurrent protection features inherent to this monolithic IC design.

Part Context

The MM3474L03VBE belongs to the MM3474 series of battery protection ICs produced by Mitsumi Electronics. This series focuses on safeguarding lithium-ion and lithium-polymer batteries through integrated detection logic. The component serves as a critical safety element in portable electronics and battery-powered devices where cell balance and fault prevention are mandatory.

Replacement Considerations

Consult official Mitsumi documentation for confirmed substitute part numbers within the MM3474 series. Verify functional equivalence regarding cell count support and protection thresholds before substituting.