STR-X6750B

AC DC Converters, Offline Switchers Overview

The STR-X6750B is a power IC for quasi-resonant type switching power supplies, incorporating a power MOSFET and controller. It features a TO-3PF-7 package with through-hole mounting. Key electrical parameters include a breakdown voltage of 650V, a startup voltage of 18.2V, and a VCC range of 9.7V to 35V. The switching frequency operates between 19kHz and 25kHz. It supports flyback topology with isolated output and includes current limiting, overload, and overvoltage protection. Operating temperature ranges from -20°C to 125°C.

AC DC Converters, Offline Switchers Feature Summary

• Multi-mode control achieving high efficiency and low noise across full load ranges via intermittent oscillation, auto burst-oscillation, bottom-skip quasi-resonant operation, and standard quasi-resonant operation.
• Integrated power MOSFET and controller IC in a single component for compact design.
• Built-in fault protection mechanisms including current limiting, overload, and overvoltage protection.

AC DC Converters, Offline Switchers Applications

• Quasi-resonant type switching power supplies
• High efficiency power supply systems
• Low noise power supply applications

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific product number as functions may differ within the series. Confirm availability status as the part may be obsolete. Ensure compatibility with TO-3PF-7 fullpack formed leads mounting requirements. Check RoHS compliance and lead-free status against current manufacturing standards before procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring integrated MOSFET and controller solutions in quasi-resonant topologies. Consider the 650V breakdown voltage and TO-3PF-7 package constraints. Evaluate thermal management needs given the -20°C to 125°C operating range. Verify if multi-mode control benefits align with specific load condition requirements.

AC DC Converters, Offline Switchers Part Context

Part of the STR-X6700 series designed for high efficiency and low noise. Related variants include the STR-W6700 series which uses a TO-220F package. The series utilizes bottom-skip quasi-resonant operation to optimize performance under varying load conditions.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the STR-X6700 series. Verify pinout and package compatibility with TO-3PF-7. Ensure electrical parameters such as 650V breakdown and switching frequency ranges match application requirements.

AC DC Converters, Offline Switchers FAQ

What are the different operation modes of the STR-X6750B?

It supports intermittent oscillation in standby, auto burst-oscillation, bottom-skip quasi-resonant operation under low to middle loads, and standard quasi-resonant operation under middle to heavy loads.

Is the STR-X6750B available in a surface mount package?

No, it is available in a TO-3PF-7 fullpack with formed leads for through-hole installation. The related STR-W6700 series uses a TO-220F package.