MM3474K04VBE

Overview

The MM3474K04VBE is a power supply support circuit manufactured by Mitsumi Electric Company Ltd, designed for battery protection applications. It belongs to the MM3474 series, which functions as an overcharge, overdischarge, and overcurrent protection integrated circuit for lithium-ion and lithium-polymer rechargeable secondary batteries. The device detects conditions such as cell overcharge, over-discharge, discharge overcurrent, and short circuits within multi-cell battery packs. It is housed in a TSSOP20 package with a shrink pitch, suitable for surface mount installation.

Feature Summary

• Provides comprehensive protection against overcharge, overdischarge, and overcurrent conditions for lithium-based battery systems.
• Capable of detecting short circuits within the protected battery pack configuration.
• Monolithic IC design intended for use with 3 to 5 cell lithium-ion or lithium-polymer secondary batteries.

Applications

• Protection circuits for 3 to 5 cell lithium-ion battery packs
• Safety management for lithium-polymer rechargeable secondary batteries
• Overcurrent and short circuit detection in portable electronic devices

Procurement Notes

Verify the exact suffix K04VBE against official Mitsumi documentation to confirm pinout and electrical specifications. Ensure compatibility with the target battery cell count and voltage range. Check for RoHS compliance status and industrial temperature rating requirements. Confirm package details match the TSSOP20 form factor. Validate that the component meets specific safety standards for the intended application environment.

Selection Notes

Select this component when designing protection circuits for multi-cell lithium-ion or lithium-polymer battery systems requiring integrated monitoring. Consider the TSSOP20 package size for space-constrained layouts. Evaluate the operating temperature range of -40 °C to 85 °C against environmental conditions. Ensure the maximum supply current and interface requirements align with the system design. Verify that the protection thresholds meet the specific battery chemistry requirements.

Part Context

The MM3474K04VBE is part of the MM3474 series from Mitsumi Electric Company Ltd, specialized in battery management. This series includes variants like MM3474G01VBE, sharing similar protective functionalities for lithium-based cells. The component fits within the broader category of power supply support circuits, specifically targeting safety-critical applications where reliable detection of abnormal battery states is essential for preventing damage or hazards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for cross-reference data. Ensure any alternative component matches the TSSOP20 package and supports 3 to 5 cell lithium battery protection. Verify functional equivalence regarding overcharge, overdischarge, and overcurrent detection capabilities before substitution.