UCC2809PWTR-1G4

AC DC Converters, Offline Switchers Overview

The UCC2809PWTR-1G4 is an economy primary side controller manufactured by Texas Instruments, designed for isolated power supply applications. It supports Boost, Flyback, and Forward topologies within a single-channel output configuration. The device operates with a switching frequency of 1 MHz and delivers a maximum duty cycle of 70%. It features an output current capability of 800 mA and functions reliably across a temperature range from -40°C to +85°C. Housed in an 8-pin TSSOP package, it utilizes surface mount technology.

AC DC Converters, Offline Switchers Feature Summary

• Supports multiple isolated converter topologies including Boost, Flyback, and Forward configurations.
• Operates at a high switching frequency of 1 MHz to enable compact magnetic component design.
• Provides robust drive capability with an output current rating of 800 mA.

AC DC Converters, Offline Switchers Applications

• Flyback converters
• Forward converters
• Boost converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance and lead-free status as per manufacturer documentation. Confirm the PWTR designation corresponds to the Tape and Reel packaging format. Ensure the -1 variant matches the required electrical specifications for the target application design.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-sensitive designs requiring primary side regulation. Evaluate thermal performance within the specified operating temperature range. Consider the 1 MHz switching frequency impact on transformer size versus control loop stability requirements.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC2809 family of primary side controllers. It serves as an alternative to standard PWM controllers by integrating regulation logic directly on the primary side, reducing component count and cost in isolated power supplies.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.