MM3474C05VBE

Overview

The MM3474C05VBE is a power supply support circuit manufactured by Mitsumi Electric Co Ltd, designed for battery protection applications. It is housed in a TSSOP20 package with a dual gull-wing terminal configuration and a 0.635 mm pitch. The device operates within an industrial temperature range of -40 °C to 85 °C and consumes a maximum supply current of 0.02 mA. It functions as a monolithic IC providing overcharge, overdischarge, and overcurrent protection for 3 to 5-cell lithium-ion or lithium-polymer rechargeable secondary batteries.

Feature Summary

• Provides integrated protection against overcharge, overdischarge, and discharge overcurrent conditions for multi-cell lithium-based battery packs.
• Detects short circuits within the protected battery system to ensure safety during fault events.
• Utilizes a compact thin-profile shrink pitch surface mount package suitable for space-constrained portable electronics.

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 'C05' against official Mitsumi documentation to confirm exact electrical tolerances and marking codes, as generic series data may not reflect variant-specific parameters. Ensure the TSSOP20 footprint matches the design layout. Confirm RoHS compliance status if required by the target market regulations, as qualification status is listed as unknown in general databases.

Selection Notes

Select this component when designing protection for 3 to 5-series lithium cells requiring a single-chip solution. The low supply current of 0.02 mA makes it suitable for battery-powered systems where standby consumption must be minimized. Verify that the operating voltage range covers the total pack voltage of the intended cell configuration.

Part Context

The MM3474 series belongs to Mitsumi's portfolio of monolithic ICs dedicated to lithium-ion and lithium-polymer battery safety. These components are engineered to detect critical fault conditions such as excessive voltage per cell, deep discharge states, and abnormal current flow. The series supports various cell counts, with the MM3474 specifically addressing configurations involving three to five cells in series.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official manufacturer cross-reference lists for verified alternatives.