MM3474F04VBE

Overview

The MM3474F04VBE 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 manages cell voltage levels within a 3 to 5-cell configuration. It is housed in a TSSOP20 package with a shrink pitch of 0.635 mm. The component operates within an industrial temperature range from -40 °C to 85 °C. Maximum supply current is specified at 0.02 mA.

Feature Summary

• Monolithic integration for multi-cell lithium-ion and lithium-polymer battery protection
• Detection capabilities for overcharge, overdischarge, overcurrent, and short circuit events
• Hardware-based protection logic ensuring reliable operation in industrial environments

Applications

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

Procurement Notes

Verify the specific suffix F04 against official Mitsumi documentation to confirm pinout and electrical characteristics match the target design requirements. Ensure the TSSOP20 package dimensions align with PCB layout constraints. Confirm that the industrial temperature rating meets the operational environment specifications. 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 schemes for multi-cell lithium-based battery architectures. The IC integrates multiple protection functions into a single package, reducing board space compared to discrete solutions. Consider the maximum supply current and operating temperature range during thermal analysis. Ensure the external sensing resistors are selected to match the overcurrent thresholds defined in the datasheet for accurate fault detection.

Part Context

The MM3474 series belongs to Mitsumi's portfolio of power supply support circuits focused on battery safety. This specific model addresses the needs of multi-cell configurations, distinguishing it from single-cell protection ICs like the MM3645. The series supports various cell counts, offering scalable protection solutions for different energy storage applications within portable electronics and industrial equipment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by comparing pin assignments and protection thresholds with alternative multi-cell battery protection ICs from other manufacturers if sourcing becomes constrained.