UCC28503DWTRG4

Overview

The UCC28503DWTRG4 is a BICMOS PFC/PWM combination controller manufactured by Texas Instruments. It integrates average current mode power factor correction and PWM control in a single package. The device operates with a switching frequency range of 80 kHz to 120 kHz. It is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package. The component supports surface-mount installation and is designed for high-efficiency power conversion applications requiring combined PFC and DC-DC regulation.

Feature Summary

• Integrates average current mode PFC and PWM controllers in a single BICMOS device
• Supports flexible switching frequency operation within the specified range
• Provides combined power factor correction and voltage regulation capabilities

Applications

• Power factor correction stages in AC-DC converters
• Combined PFC and flyback converter designs
• High-efficiency power supply systems

Procurement Notes

Verify the exact part number suffix against official Texas Instruments documentation to confirm package type, temperature range, and tape-and-reel specifications. Ensure compatibility with your PCB footprint and thermal requirements. Confirm end-of-life status and availability through authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when a single IC solution for both PFC and PWM control is required. Consider the 20-SOIC package constraints and operating temperature range. Evaluate the 80 kHz to 120 kHz frequency range against your electromagnetic interference and efficiency targets. Verify input voltage ranges and control loop stability requirements against the datasheet specifications.

Part Context

This component belongs to the UCC28503 series from Texas Instruments, which focuses on integrated power management solutions. The series combines power factor correction and pulse-width modulation functions to simplify design complexity. It targets applications needing compact, efficient power conversion architectures with reduced component count.

Replacement Considerations

Check for direct pin-compatible substitutes or functional equivalents within the TI portfolio. Verify that alternative components meet the same electrical specifications and package dimensions. Consult official replacement guides for discontinued parts.