78253/35MC

Overview

The Murata Power Solutions Inc. 78253/35MC is a specialty pulse transformer designed for surface mount applications, compatible with the Maxim MAX253 controller. It features a toroidal construction and supports primary voltages of 3.3V and secondary voltages of 5V. The component provides an isolation voltage of 1.5kVDC and operates within a frequency range up to 500kHz. It has a power rating of 500mW and utilizes an industry-standard pinout configuration.

Feature Summary

• Toroidal construction for compact design
• Compatible with Maxim MAX253 controller
• Industry-standard pinout configuration

Applications

• Switch-mode power supply circuits
• Isolated gate drive applications
• MAX253-based converter designs

Procurement Notes

Verify RoHS compliance status and specific isolation ratings against current datasheets before integration. Confirm that the 1.5kVDC isolation meets system safety requirements. Ensure the 500mW power rating aligns with thermal management capabilities in the target application environment.

Selection Notes

Select this component when designing around the Maxim MAX253 controller requiring surface mount compatibility. Consider the 500kHz frequency limit and 1.5kVDC isolation barrier. Verify that the 3.3V primary and 5V secondary voltage levels match the control logic requirements.

Part Context

This part belongs to the 78253 series of specialty transformers from Murata Power Solutions. It is specifically engineered for high-frequency switching applications. The series includes various variants tailored for different voltage configurations and mounting styles while maintaining compatibility with popular controller ICs.

Replacement Considerations

Direct substitutes include other MAX253-compatible transformers with matching pinouts and electrical specifications. Verify equivalent isolation voltage and frequency response characteristics.