MM3474E01VBE

Overview

The MM3474E01VBE is a power supply support circuit manufactured by Mitsumi Electric. It is designed for battery protection applications, specifically serving as an overcharge, overdischarge, and overcurrent protection IC for 3 to 5-cell lithium-ion or lithium-polymer rechargeable secondary batteries. The device detects conditions such as cell overcharge, over-discharge, discharge overcurrent, and short circuits. It is housed in a TSSOP-20 package with a shrink pitch of 0.635 mm. The component operates within an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• Provides comprehensive protection against overcharge, overdischarge, and overcurrent conditions for multi-cell lithium-based battery packs.
• Detects short circuit events to ensure safety during fault conditions.
• Designed for integration into systems requiring reliable power supply support for lithium-ion or lithium-polymer cells.

Applications

• Protection circuits for 3 to 5-cell lithium-ion battery packs
• Protection circuits for 3 to 5-cell lithium-polymer battery packs
• Power supply support in portable electronic devices

Procurement Notes

Verify the exact suffix and marking on the component to confirm it matches the MM3474E01VBE designation. Ensure the supplier provides documentation confirming the TSSOP-20 package and industrial temperature rating. Cross-reference the manufacturer's official datasheet for the MM3474 series to validate pinout and electrical characteristics before finalizing procurement.

Selection Notes

Select this component when designing protection circuits for battery packs consisting of 3 to 5 cells. It is suitable for applications requiring detection of overcharge, overdischarge, and overcurrent states. Consider the TSSOP-20 package constraints and the -40 °C to +85 °C operating temperature range during PCB layout and system thermal design.

Part Context

The MM3474E01VBE belongs to the MM3474 series of monolithic integrated circuits produced by Mitsumi Electric. This series is specialized for protecting lithium-ion and lithium-polymer rechargeable secondary batteries. The family includes variants designed to handle multiple cells, offering a compact solution for battery management systems in consumer electronics and industrial applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing designs by comparing pinouts, voltage ratings, and protection thresholds with alternative battery protection ICs from other manufacturers if substitution is required.