MM3474P03VBE

Overview

The MM3474P03VBE is a power supply support circuit from the Mitsumi Electric MM3474 series, designed for lithium-ion and lithium-polymer battery protection. It operates within an industrial temperature range of -40 °C to +85 °C. The device is housed in a TSSOP20 package with a 0.635 mm pitch. It features a maximum supply current of 0.02 mA and supports surface mount installation.

Feature Summary

• Provides overcharge, overdischarge, and overcurrent protection for 3 to 5 cell lithium-ion or lithium-polymer rechargeable secondary batteries.
• Detects short circuits and individual cell voltage anomalies within the battery pack configuration.

Applications

• Protection circuits for multi-cell lithium-ion battery packs
• Safety monitoring for lithium-polymer rechargeable battery systems
• Power supply support in portable electronic devices

Procurement Notes

Verify the specific suffix P03 against official Mitsumi documentation to confirm pinout and functional variations compared to other MM3474 variants. Ensure the component meets the required industrial temperature specifications and package tolerance standards for your design.

Selection Notes

Select this IC when designing protection logic for 3 to 5 series cells. Consider the TSSOP20 footprint and low standby current requirements. Confirm compatibility with the target battery chemistry and voltage thresholds defined in the datasheet.

Part Context

Part of the MM3474 monolithic IC series by Mitsumi Electric. This family focuses on integrated safety solutions for multi-cell Li-ion and Li-Po batteries, combining detection capabilities into a single compact component to simplify PCB layout and reduce external component count.

Replacement Considerations

Consult official substitution lists for verified equivalents. Generic replacements may differ in threshold accuracy or package dimensions. Verify electrical characteristics match before integration.