78253/35MVC

Overview

The Murata Power Solutions Inc. 78253/35MVC is a specialized power transformer designed for the MAX253 chipset to provide isolated power supplies. It features a primary voltage rating of 3.3 V and a secondary voltage rating of 5 V. The unit supports a maximum secondary current of 100 mA with a power rating of 500 mW. Key electrical specifications include a turns ratio of 1:2.14, isolation voltage of 4000 Vdc, and an inductance of 120 uH. The component utilizes surface mount technology (SMD) and belongs to the 78253 series.

Feature Summary

• Designed specifically for use with the MAX253 chipset to facilitate isolated power supply applications
• Provides high-voltage isolation capability between primary and secondary windings
• Utilizes surface mount construction for automated PCB assembly integration

Applications

• Isolated power supply design using MAX253 chipset
• Industrial control systems requiring galvanic isolation
• Medical equipment power stages

Procurement Notes

Verify the specific suffix 'MVC' against official Murata documentation to confirm the exact inductance value and pin configuration. Ensure compatibility with the MAX253 controller IC. Check for any recent product change notices or lifecycle status updates from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when designing isolated power circuits based on the MAX253 architecture. Confirm that the required input voltage is 3.3 V and the output requirement is 5 V at up to 100 mA. Verify that the 4000 Vdc isolation rating meets the safety standards of the target application environment.

Part Context

This transformer is part of the 78253 series, which consists of specialty converters tailored for the MAX253 family of switching controllers. These components are engineered to work in tandem with the chipset to ensure efficient energy transfer and reliable isolation in compact power modules.

Replacement Considerations

Consult Murata's official suggested alternates list for direct replacements. Verify that any substitute maintains the same 1:2.14 turns ratio, 4000 Vdc isolation, and SMD footprint to ensure functional equivalence with the MAX253 system.