UCC3819AD

Overview

The UCC3819AD is a power factor correction controller manufactured by Texas Instruments, designed for average current mode control applications. It operates within a supply voltage range of 10.8V to 17V and supports a switching frequency of 250kHz. The device is housed in a 16-SOIC package with a wide operating temperature range from 0°C to +70°C. It features a low start-up current of 150 µA, facilitating efficient power management in pre-regulator circuits.

Feature Summary

• Implements average current mode control for enhanced power factor correction performance
• Supports high-frequency operation up to 250kHz for compact magnetic component design
• Features low start-up current consumption to improve system efficiency

Applications

• Power factor pre-regulator circuits
• Average current mode PFC controllers
• Switching power supply designs requiring high power factor

Procurement Notes

Verify the specific suffix 'AD' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the 16-SOIC package dimensions match your PCB footprint requirements. Confirm that the 0°C to +70°C operating temperature range meets your application's environmental constraints before finalizing procurement.

Selection Notes

Select this component when average current mode control is required for power factor correction. Consider the 250kHz switching frequency for balancing efficiency and EMI. Verify that the 10.8V to 17V supply voltage range aligns with your system's available rails. The 16-SOIC package is suitable for surface-mount assembly processes.

Part Context

The UCC3819 belongs to Texas Instruments' family of power factor correction controllers. It is part of the broader UCC381x series, which includes variants like the UCC3818 and UCC3819A. These devices are engineered for biCMOS technology to deliver precise current mode control in power supply applications.

Replacement Considerations

Publicly confirmed substitute part numbers for the UCC3819AD are not available in the provided documentation. Consult the manufacturer's official replacement guide or contact technical support for verified alternatives.