UCC28085PW

AC DC Converters, Offline Switchers Overview

The UCC28085PW is an obsolete current-mode push-pull switching controller from Texas Instruments, designed for offline converters. It supports half-bridge and push-pull topologies with a switching frequency range of 50 kHz to 1 MHz. The device features a maximum duty cycle of 49% and provides two outputs with a drive current of 1 A. It operates within a supply voltage range of 8.5 V to 14 V and functions at temperatures between -40°C and +85°C. The component is housed in an 8-pin TSSOP package.

AC DC Converters, Offline Switchers Feature Summary

• Current-mode control architecture for push-pull and half-bridge applications
• Programmable switching frequency up to 1 MHz
• Integrated slope compensation for stability

AC DC Converters, Offline Switchers Applications

• Offline power supplies
• Push-pull converter designs
• Half-bridge converter circuits

AC DC Converters, Offline Switchers Procurement Notes

This specific part number is officially marked as obsolete by the manufacturer and is no longer in active production. Procurement should focus on verified distributors holding remaining stock or authorized substitute components. Verify lot dates and authenticity carefully due to the discontinued status. Ensure replacement parts meet all original electrical specifications before integration.

AC DC Converters, Offline Switchers Selection Notes

Select this component only if legacy compatibility is required or for non-critical prototyping where obsolescence does not impact long-term availability. For new designs, evaluate modern equivalents that offer improved efficiency or extended temperature ranges. Confirm that the 8-pin TSSOP footprint matches the target PCB layout constraints and thermal requirements.

AC DC Converters, Offline Switchers Part Context

The UCC28085 belongs to the UCC2808x family of current-mode controllers. It shares functional similarities with the UCC28089 but differs in package type and specific feature sets. This series targets high-frequency offline power conversion needs, providing robust control loops for isolated DC-DC applications requiring precise duty cycle management.

AC DC Converters, Offline Switchers Replacement Considerations

• UCC28089D
• UCC28089DR

AC DC Converters, Offline Switchers FAQ

Is the UCC28085PW currently in production?

No, the UCC28085PW is listed as obsolete and is no longer manufactured by Texas Instruments.

What is the maximum switching frequency supported?

The device supports a switching frequency range up to 1 MHz.