UCC2819AN

Overview

The UCC2819AN is a high-performance, current-mode PWM controller designed for power factor correction (PFC) applications. It integrates a precision analog multiplier and a high-gain error amplifier to achieve low harmonic distortion. The device operates from a wide supply voltage range and includes comprehensive protection features such as cycle-by-cycle current limiting, undervoltage lockout, and thermal shutdown. Its compact SOIC-8 package facilitates efficient board layout for industrial and consumer power supplies requiring compliance with electromagnetic interference standards.

Feature Summary

• Integrates a precision analog multiplier for accurate line current shaping
• Includes built-in cycle-by-cycle current limit for robust operation
• Features undervoltage lockout and thermal shutdown for system protection

Applications

• Power factor correction in AC-DC adapters
• Industrial power supply front ends
• Consumer electronics power stages

Procurement Notes

Verify the suffix 'N' indicates a plastic small outline package. Confirm the manufacturer marking matches Texas Instruments specifications. Check for date codes and lot traceability on the component surface. Ensure storage conditions comply with moisture sensitivity level requirements before reflow soldering.

Selection Notes

Select this component when designing single-stage PFC converters requiring high efficiency and low total harmonic distortion. Consider the operating frequency range and input voltage specifications relative to the target application. Evaluate thermal performance based on the expected power dissipation in the chosen package type.

Part Context

This part belongs to the UCC281x family of PFC controllers. It serves as a cost-effective solution for continuous conduction mode boost PFC designs. The device complements other Texas Instruments power management ICs by providing dedicated control logic for power factor correction stages.

Replacement Considerations

Direct pin-compatible alternatives may include the UCC2818 or UCC2817 series. Verify electrical parameters and package dimensions before substitution. Consult official cross-reference guides for functional equivalence confirmation.