MM3474D03VBE

Overview

The MM3474D03VBE is a monolithic integrated circuit designed for battery protection, belonging to the MM3474 series manufactured by Mitsumi Electric. It functions as an overcharge, overdischarge, and overcurrent protection IC specifically engineered for lithium-ion and lithium-polymer rechargeable secondary batteries. The device detects conditions such as overcharge of each cell, overdischarge, discharge overcurrent, and short circuits within a 3 to 5-cell configuration. It is housed in a TSSOP20 package with a 0.635 mm pitch, operating within an industrial temperature range of -40 °C to 85 °C.

Feature Summary

• Monolithic integration of overcharge, overdischarge, and overcurrent protection functions for multi-cell battery packs
• Detection capability for individual cell overcharge, overall overdischarge, discharge overcurrent, and short circuit events
• Designed specifically for lithium-ion and lithium-polymer rechargeable secondary battery systems

Applications

• Protection circuits for 3 to 5-cell lithium-ion battery packs
• Protection circuits for 3 to 5-cell lithium-polymer battery packs
• Portable electronic devices requiring multi-cell battery management

Procurement Notes

Verify the specific suffix 'D03' against official Mitsumi documentation to confirm pinout, voltage thresholds, or functional variations compared to other MM3474 variants. Ensure the component matches the required TSSOP20 package specifications and industrial temperature rating (-40°C to 85°C) for your application environment. Cross-reference the manufacturer part number directly with the datasheet to avoid confusion with similar models in the MM3474 series.

Selection Notes

Select this component when designing protection for 3 to 5-cell lithium-ion or lithium-polymer batteries requiring integrated detection for overcharge, overdischarge, and overcurrent. Consider the TSSOP20 surface-mount package and industrial temperature range suitability. Evaluate if the specific electrical parameters associated with the 'D03' suffix align with the system's voltage and current requirements compared to other MM3474 series options.

Part Context

The MM3474D03VBE belongs to the MM3474 series from Mitsumi Electric, which provides protection solutions for multi-cell lithium-based batteries. This series complements other Mitsumi products like the MM3645 (1-cell) and MM3684 (3-5 cells), offering specialized ICs for detecting critical fault conditions in rechargeable battery systems used in consumer electronics and portable devices.

Replacement Considerations

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