MC33363ADWR2

AC DC Converters, Offline Switchers Overview

The MC33363ADWR2 is a monolithic high-voltage switching regulator designed for rectified 240 Vac line source operation. It integrates a 700 V / 1.5 A SENSEFET power switch and a 500 V active off-line startup FET. The device supports flyback and forward topologies with a switching frequency range of 67.5 kHz to 285 kHz. It operates within a supply voltage range of 9.5 V to 40 V, features a 15.2 V start-up voltage, and utilizes a 16-SOIC package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V / 1.5 A SENSEFET power switch for enhanced power capability
• Includes a 500 V active off-line startup FET for direct line connection
• Features latching pulse width modulation for double pulse suppression
• Provides comprehensive protection including cycle-by-cycle current limiting and thermal shutdown

AC DC Converters, Offline Switchers Applications

• Offline AC-DC converters operating from rectified 240 Vac sources
• Flyback power supply designs
• Forward converter applications

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'R2' against official onsemi documentation to confirm tape-and-reel packaging status. Confirm RoHS compliance and REACH status through current manufacturer declarations. Check for Product Change Notifications (PCN) or End-of-Life (EOL) notices, as this component family has faced discontinuation events in recent years. Ensure the 16-SOIC package dimensions match your PCB footprint requirements.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing offline power supplies requiring integrated high-voltage switching capabilities. It is suitable for applications needing operation directly from rectified mains voltage without external startup circuitry. Consider the 700 V breakdown voltage and 1.5 A current rating for appropriate power levels. Verify that the 16-SOIC package is compatible with your assembly process and thermal management strategy.

AC DC Converters, Offline Switchers Part Context

The MC33363A series belongs to onsemi's legacy high-voltage switching regulator lineup, originally developed by Motorola. This family offers an integrated solution for offline power conversion, combining the power switch, oscillator, and control logic into a single IC. The ADWR2 variant specifically denotes the surface-mount version with reel packaging, distinct from the through-hole DW variants.

AC DC Converters, Offline Switchers Replacement Considerations

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