STR-W6753R

AC DC Converters, Offline Switchers Overview

The STR-W6753R is a quasi-resonant switching regulator designed for off-line flyback power supplies. It integrates a rugged 650 V avalanche-rated power MOSFET with primary control and drive circuitry. The device features a maximum rDS(on) of 1.7 Ω and supports automatic switching between quasi-resonant mode for normal operation and burst mode for light loads or standby. Key electrical characteristics include an input power consumption of less than 0.1 W at no load and a typical operating current of 6 mA.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a rugged 650 V avalanche-rated power MOSFET to simplify surge absorption without requiring VDSS derating.
• Supports two operational modes via automatic switching: quasi-resonant mode for standard efficiency and burst mode for low-power standby applications.
• Incorporates multiple protection mechanisms including pulse-by-pulse overcurrent, overload auto-recovery, latching overvoltage, and undervoltage lockout with hysteresis.

AC DC Converters, Offline Switchers Applications

• Universal-input off-line switch-mode power supplies
• Quasi-resonant flyback converter designs
• High-efficiency AC-DC adapter implementations

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'R' against the manufacturer's official datasheet to confirm reel packaging specifications and tape dimensions. Ensure compatibility with the required thermal management solutions for the TO-3P flange mount package. Cross-reference the part number with authorized distributors to confirm current availability and lead times prior to finalizing procurement plans.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring high integration and reliability in switch-mode power supplies. The built-in avalanche rating eliminates the need for external snubber circuits, reducing bill of materials complexity. Consider the low standby power consumption and soft-switching capabilities when designing for systems with strict energy efficiency standards.

AC DC Converters, Offline Switchers Part Context

This part belongs to Sanken Electric's STR series of quasi-resonant regulators. These components are engineered to meet the demands for increased integration and reliability in modern power supply architectures. The series typically combines primary side control with high-voltage power switches to streamline design processes.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical parameter compatibility before considering alternative manufacturers.