MM3474E04VBE

Overview

The MM3474E04VBE is a power supply support circuit manufactured by Mitsumi Electric Co Ltd, designed for industrial applications. It is housed in a TSSOP20 package with a plastic/epoxy body and gull-wing terminals at a 0.635 mm pitch. The device operates within an ambient temperature range of -40 °C to 85 °C. It features a maximum supply current of 0.02 mA and supports surface mount installation. The component is classified as a power supply support circuit under JESD-30 code R-PDSO-G20.

Feature Summary

• Provides overcharge, overdischarge, and overcurrent protection for lithium-ion and lithium-polymer rechargeable secondary batteries.
• Detects cell-level overcharge conditions, deep discharge states, and short circuits within the battery pack.
• Monitors up to five cells in series configurations for comprehensive battery management.

Applications

• Protection circuits for 3 to 5-cell lithium-ion battery packs
• Safety monitoring for lithium-polymer rechargeable secondary batteries
• Industrial power supply support systems requiring cell-level fault detection

Procurement Notes

Verify the specific suffix E04VBE against official Mitsumi documentation to confirm pinout compatibility and tape-and-reel specifications. Ensure the procurement source provides valid traceability records for the industrial temperature grade components. Confirm that the TSSOP20 package dimensions match the target PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when designing protection circuits for multi-cell lithium-based battery systems requiring integrated fault detection. The wide operating temperature range suits industrial environments. Consider the low supply current for efficiency-critical designs. Verify that the 20-pin TSSOP package fits the available board space and manufacturing capabilities.

Part Context

The MM3474 series from Mitsumi Electronics focuses on monolithic IC solutions for battery safety. This specific part addresses the need for compact, reliable protection in portable and industrial energy storage devices. It integrates sensing logic directly into the package to minimize external component count and improve system reliability compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users must consult official Mitsumi channels for direct replacements or verify cross-compatibility with other battery protection ICs based on specific electrical and mechanical constraints.