UCC287508DBVR

AC DC Converters, Offline Switchers Overview

The UCC287508DBVR is a current-mode flyback controller featuring secondary-side regulation (SSR) for offline applications. It operates at fixed frequencies of 65 kHz or 100 kHz and supports stable continuous conduction mode (CCM) with internal slope compensation. The device utilizes an SOT-23-6 package, designed for high-efficiency power supply implementations requiring precise output control without primary-side feedback components.

AC DC Converters, Offline Switchers Feature Summary

• Enables stable continuous conduction mode operation through integrated slope compensation mechanisms
• Provides constant-voltage and constant-current regulation via secondary-side sensing architecture
• Supports fixed-frequency switching operations at standard industrial intervals

AC DC Converters, Offline Switchers Applications

• Offline flyback power supplies requiring secondary-side regulation
• Constant-voltage and constant-current charger designs
• High-efficiency isolated DC-DC converter implementations

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific frequency variant (65 kHz or 100 kHz) required for your design, as this parameter affects magnetic component selection. Confirm that the SOT-23-6 package footprint matches your PCB layout constraints. Ensure the bill of materials accounts for the necessary secondary-side sensing components to utilize the SSR functionality effectively.

AC DC Converters, Offline Switchers Selection Notes

Select this controller when secondary-side regulation is preferred over primary-side regulation to improve cross-regulation accuracy in multi-output designs. Consider the fixed operating frequency options against transformer design requirements. Evaluate thermal performance within the SOT-23-6 package relative to the expected power dissipation levels in the target application environment.

AC DC Converters, Offline Switchers Part Context

This component belongs to Texas Instruments' family of current-mode flyback controllers designed for offline applications. It represents a shift toward secondary-side regulation architectures, distinguishing it from traditional primary-side controlled counterparts by eliminating the need for optocouplers and error amplifiers on the primary side.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes include other UCC28750 series variants such as the UCC287501DBVR, though frequency specifications may differ. Verify pin compatibility and regulatory features before swapping between different sub-models within the same product family.