MM3474D01VBE

Overview

The MM3474D01VBE is a power supply support circuit manufactured by Mitsumi Electric Co Ltd. It is designed for protection of 3 to 5 cells in lithium-ion and lithium-polymer rechargeable secondary batteries. The device detects overcharge, overdischarge, discharge overcurrent, and short circuits. It operates within an industrial temperature range of -40 °C to +85 °C. The component utilizes a TSSOP-20 package with a plastic/epoxy body and gull-wing terminals at a 0.635 mm pitch. Maximum supply current is 0.02 mA.

Feature Summary

• Monolithic integrated circuit providing comprehensive protection for multi-cell lithium-based battery packs
• Detects overcharge, overdischarge, discharge overcurrent, and short circuit conditions across individual cells
• Industrial temperature rating suitable for demanding operational environments

Applications

• Protection circuits for 3 to 5 cell lithium-ion battery packs
• Protection circuits for 3 to 5 cell lithium-polymer battery packs
• Rechargeable secondary battery management systems

Procurement Notes

Verify the specific suffix D01 against official Mitsumi documentation to confirm pinout and electrical characteristics match the target design requirements. Ensure the TSSOP20 package dimensions align with PCB footprint specifications. Confirm that the industrial temperature range meets the application's thermal constraints. Cross-reference the part number with authorized distributors to ensure authenticity and traceability of the semiconductor components.

Selection Notes

Select this component when designing protection logic for 3 to 5 series-connected lithium-ion or lithium-polymer cells. The MM3474 series integrates detection functions for voltage and current limits directly into a single IC. Consider the TSSOP-20 package size for space-constrained designs. Verify that the low supply current requirement fits the standby power budget of the battery system architecture.

Part Context

The MM3474 series belongs to Mitsumi's portfolio of battery protection integrated circuits. It complements other models like the MM3645 for single-cell applications and the MM3684 for similar multi-cell configurations. These devices address safety requirements in portable electronics and power tools by preventing hazardous battery states through precise monitoring and control mechanisms.

Replacement Considerations

Official substitutes include other variants within the MM3474 series, such as MM3474G01VBE, provided the package and functional specifications remain identical. Verify compatibility before substitution.