UCC2819D

Overview

The UCC2819D is a BiCMOS power factor preregulator designed for continuous conduction mode (CCM) operation. It integrates average current mode control with an enable pin and overvoltage protection. The device operates within a supply voltage range up to 17 V, featuring UVLO thresholds at 10.2 V (on) and 9.7 V (off). It supports switching frequencies up to 250 kHz and draws a startup current of 150 uA. The gate driver provides peak source and sink currents of -1.2 A and 1.2 A respectively. It is housed in a 16-pin SOIC package and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrates average current mode control for high-performance power factor correction
• Includes dedicated enable functionality for system power management
• Features built-in overvoltage protection mechanisms
• Provides robust gate drive capability with 1.2 A peak source and sink currents

Applications

• Single-phase power factor correction preregulators
• AC-DC power supplies requiring CCM operation
• Industrial power conversion systems

Procurement Notes

Verify the specific suffix 'D' against the manufacturer's official documentation to confirm package type and temperature rating. Confirm availability status as distribution channels may list this component as obsolete or limited stock. Ensure compatibility with existing PCB footprints for the 16-pin SOIC package before procurement.

Selection Notes

Select this component for applications requiring integrated PFC control with enable features. Compare operating temperature ranges and package options against design requirements. Verify that the 250 kHz maximum frequency aligns with magnetic component specifications. Check for alternative suffixes if different thermal or packaging needs arise.

Part Context

This part belongs to the UCC2819A series of BiCMOS power factor preregulators from Texas Instruments. It shares core functional characteristics with other members of the family but differs in specific package configurations and operational ratings defined by its suffix designation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data.