MM3474J01VBE

Overview

The MM3474J01VBE is a monolithic integrated circuit designed as a protection IC for lithium-ion and lithium-polymer rechargeable secondary batteries. It provides comprehensive safety monitoring for battery packs consisting of three to five cells. The device detects overcharge conditions on each individual cell, prevents overdischarge of the entire pack, and safeguards against discharge overcurrent and short circuits. Manufactured by Mitsumi Electric Company Ltd, it operates within an industrial temperature range of -40 °C to +85 °C. The component utilizes a TSSOP20 surface-mount package with a 0.635 mm pitch and draws a maximum supply current of 0.02 mA.

Feature Summary

• Monolithic integration of overcharge, overdischarge, and overcurrent protection functions for multi-cell battery packs
• Per-cell voltage monitoring capability to detect overcharge conditions in lithium-ion or lithium-polymer configurations
• Detection of discharge overcurrent and short circuit events to ensure battery safety

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 protection

Procurement Notes

Verify the specific suffix J01VBE against official Mitsumi documentation to confirm pinout and electrical characteristics. 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 series components like MM3472 or MM3478 which serve different power management functions.

Selection Notes

Select this component when designing protection circuits for battery packs containing three to five cells. It is suitable for applications requiring simultaneous detection of per-cell overcharge and pack-level overdischarge. Consider the TSSOP20 package constraints and the -40 °C to +85 °C operating temperature range during board layout and thermal design.

Part Context

The MM3474 series belongs to Mitsumi's portfolio of battery protection integrated circuits. It complements other series such as the MM3645 for single-cell applications and the MM3684 for similar multi-cell configurations. This family addresses the safety requirements for portable electronics using lithium-based chemistries, offering a compact solution for managing multiple cells within a single chip.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.