UCC3809DTR-1G4

AC DC Converters, Offline Switchers Overview

The UCC3809DTR-1G4 is an economy primary side controller from Texas Instruments, packaged in an 8-SOIC. It supports Boost, Buck, Flyback, and Forward topologies with a switching frequency of 1 MHz. The device features a maximum duty cycle of 70% and delivers up to 800 mA output current at 10 V. Operating temperatures range from 0°C to +70°C.

AC DC Converters, Offline Switchers Feature Summary

• Economy primary side control for isolated power supplies
• Supports multiple converter topologies including flyback and forward
• Integrated high-current driver stage

AC DC Converters, Offline Switchers Applications

• Flyback converters
• Forward converters
• Buck converters
• Boost converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'G4' against official documentation to confirm RoHS compliance status and exact electrical specifications. Ensure the ordering part number matches the datasheet exactly, as suffixes can indicate variations in packaging or environmental compliance that affect integration.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-sensitive applications requiring primary side regulation. Consider the 1 MHz switching frequency for size reduction. Verify thermal requirements within the 0°C to +70°C operating range and ensure the SOIC-8 package fits the PCB layout constraints.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC3809 series of primary side controllers. It shares core functionality with variants like UCC3809D-2 but differs in output voltage specifications and packaging options. The series targets low-cost offline power supply designs.

AC DC Converters, Offline Switchers Replacement Considerations

UCC3809DTR-2 is a documented alternative within the same family.