MM3474F03VBE

Overview

The MM3474F03VBE 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 0.635 mm terminal pitch and dual gull-wing terminals. The device operates within an industrial temperature range of -40 °C to +85 °C. It functions as a monolithic IC providing overcharge, overdischarge, and overcurrent protection for lithium-ion and lithium-polymer rechargeable secondary batteries containing 3 to 5 cells.

Feature Summary

• Monolithic integrated circuit architecture for compact design
• Integrated detection for overcharge conditions per cell
• Integrated detection for overdischarge conditions
• Integrated detection for discharge overcurrent and short circuits

Applications

• Protection circuits for 3-cell lithium-ion battery packs
• Protection circuits for 4-cell lithium-ion battery packs
• Protection circuits for 5-cell lithium-ion battery packs
• Protection circuits for 3 to 5-cell lithium-polymer battery packs

Procurement Notes

Verify the specific suffix F03 against official Mitsumi documentation to confirm pinout and electrical characteristics match the target application requirements. Ensure the component meets the required industrial temperature grade specifications. Confirm that the TSSOP20 package dimensions align with the PCB footprint constraints. Validate that the manufacturer source is authorized to prevent counterfeit components.

Selection Notes

Select this component when designing protection systems for multi-cell lithium-based battery architectures requiring integrated fault detection. Consider the TSSOP20 package size for space-constrained portable electronics. Evaluate the need for simultaneous overcharge, overdischarge, and overcurrent monitoring capabilities. Verify compatibility with the specific voltage levels of the intended 3 to 5 cell configuration.

Part Context

The MM3474 series serves as a specialized power supply support circuit within Mitsumi's portfolio, focusing on safety management for rechargeable energy storage. It complements other power management devices like LDOs and DC-DC converters by handling critical fault protection scenarios. The series addresses the specific needs of portable devices utilizing lithium-ion or lithium-polymer chemistries where cell balance and safety are paramount.

Replacement Considerations

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