UCC28051DRG4

Overview

The UCC28051DRG4 is a transition-mode power factor correction controller manufactured by Texas Instruments. It operates within a switching frequency range of 65 kHz to 200 kHz and supports a supply voltage from 12 V to 18 V. The device features a startup current of 75 µA and functions across an operating temperature range of -40°C to 105°C. Packaged in an 8-SOIC surface-mount format, it integrates a high-precision multiplier for accurate line and load regulation.

Feature Summary

• Transition-mode operation enables zero-current switching at light loads to improve efficiency
• Integrated high-precision analog multiplier ensures accurate power factor correction
• Low startup current minimizes standby power consumption during off-line periods

Applications

• Universal AC input power supplies
• Power factor correction stages in adapter designs
• High-efficiency offline converter topologies

Procurement Notes

Verify the specific suffix DRG4 indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the component meets automotive or industrial qualification requirements if applicable to the target system environment.

Selection Notes

Select this component for applications requiring high power factor with minimal component count. The transition-mode architecture suits medium-power designs where efficiency at partial loads is critical. Compare against fixed-frequency controllers if EMI filtering constraints differ significantly from the variable frequency behavior of this device.

Part Context

This part belongs to the UCC2805x family of power factor correction controllers. It serves as the active version of the legacy UC3854, offering improved performance in modern surface-mount assemblies. The family is designed for universal AC-DC conversion systems requiring strict harmonic distortion limits.

Replacement Considerations

The UCC28051D is the tube-packaged equivalent of this reel-part. For direct functional substitution, verify pin compatibility with existing layouts.