UCC3819APW

Overview

The UCC3819APW is a Power Factor Correction (PFC) controller IC from Texas Instruments, designed for average current mode control. It operates within a supply voltage range of 10.8V to 17V and supports switching frequencies up to 250kHz. The device is housed in a 16-pin TSSOP package with a width of 4.4mm, suitable for surface mount installation. It functions within an operating temperature range of 0°C to 70°C and requires a startup current of 150 µA.

Feature Summary

• Implements average current mode control for high-performance power factor correction
• Integrated soft-start circuitry to limit inrush current during startup
• Includes built-in multiplier and error amplifier for precise line regulation

Applications

• Offline AC-DC power supplies
• Power factor correction stages in consumer electronics
• Industrial power conversion systems

Procurement Notes

Verify the suffix 'PW' confirms the TSSOP-16 package variant rather than the SOIC version. Confirm RoHS compliance status as specifications may vary by production lot. Check for obsolescence notices or lifecycle changes directly from Texas Instruments documentation before finalizing procurement plans.

Selection Notes

Select this component when average current mode PFC is required for improved transient response compared to peak current mode. Ensure the design accommodates the 16-pin TSSOP footprint and thermal requirements. Verify that the input voltage range aligns with the 10.8V to 17V supply constraint for proper operation.

Part Context

This part belongs to the UCC3819 family of PFC controllers. It shares core functionality with the UCC3819ADR but differs in packaging. The family is designed for universal input applications requiring efficient power conversion and compliance with harmonic distortion standards.

Replacement Considerations

The UCC3819ADR is a direct pin-compatible alternative using a 16-SOIC package. Verify package dimensions and thermal dissipation characteristics match the PCB layout constraints.