MM3474F08VBE

Overview

The MM3474F08VBE is a monolithic integrated circuit designed for battery protection in lithium-ion and lithium-polymer rechargeable secondary batteries. It provides comprehensive protection against overcharge, overdischarge, and discharge overcurrent conditions. The device detects short circuits and monitors individual cell voltages within a 3 to 5-cell configuration. 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 and features a maximum supply current of 0.02 mA.

Feature Summary

• Monolithic integration of overcharge, overdischarge, and overcurrent protection functions
• Supports 3 to 5 cell lithium-ion and lithium-polymer battery configurations
• Detects short circuit events within the battery pack
• Industrial temperature rating for robust operation

Applications

• Protection circuits for 3 to 5-cell lithium-ion battery packs
• Safety management in lithium-polymer rechargeable secondary batteries
• Portable electronic devices requiring multi-cell battery supervision

Procurement Notes

Verify the specific suffix F08 against official Mitsumi documentation to confirm pinout and electrical characteristics. Ensure the TSSOP20 package matches the design footprint. Confirm the operating temperature range meets the target application requirements. Cross-reference the ECCN code EAR99 for export compliance needs. Validate that the 0.02 mA supply current fits the system power budget.

Selection Notes

Select this component when designing protection for multi-cell lithium-based battery systems. It integrates multiple protection functions into a single IC, reducing board space. The low supply current minimizes standby power drain. Verify compatibility with the specific cell count (3 to 5 cells) required by the application. Ensure the TSSOP package size fits the available PCB area.

Part Context

The MM3474 series includes variants like MM3474E02VBE, which share similar protection functionalities for lithium-ion/polymer batteries. These ICs are part of Mitsumi's portfolio for power supply support and battery management. The series focuses on safety-critical monitoring for portable energy storage solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer guidelines for direct replacements.