UCC28019AD

Overview

The UCC28019AD is a high-performance, fixed-frequency current-mode controller designed for continuous conduction mode (CCM) power factor correction. Manufactured by Texas Instruments, it operates within a supply voltage range of 10 V to 21 V and supports a switching frequency of 71 kHz. The device is housed in an 8-pin SOIC package and functions reliably across an extended temperature range from -40°C to +125°C, with a maximum power dissipation of 250 mW.

Feature Summary

• Integrates essential protection mechanisms including under-voltage lockout, soft-start, and over-current protection.
• Enables design flexibility through external component adjustments for operational parameters.
• Supports programmable frequency modulation to optimize performance across various power levels.

Applications

• Industrial power supplies
• Telecommunications equipment
• Consumer electronics
• Data communication power systems

Procurement Notes

Verify the specific suffix 'AD' corresponds to the tube packaging configuration rather than the tape-and-reel variant. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments representatives prior to finalizing procurement orders.

Selection Notes

Select this component for applications requiring strict adherence to harmonic distortion standards such as IEC 61000-3-2. It is suitable for designs prioritizing grid utilization efficiency and reduced line losses. Ensure the operating environment falls within the specified thermal limits and that the required power output aligns with the controller's capabilities.

Part Context

This integrated circuit belongs to the UCC28019A series of power management ICs. It serves as a core component for AC-DC converters aiming to improve power quality. The device addresses common issues associated with low power factors, such as increased wire losses and voltage fluctuations, by synchronizing current and voltage waveforms.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

FAQ

What control topology does the UCC28019AD utilize?

It utilizes a fixed-frequency current-mode control strategy specifically optimized for continuous conduction mode operation.

How does the device handle input voltage variations?

The controller includes built-in under-voltage lockout functionality to ensure stable operation when the supply voltage drops below the minimum threshold of 10 V.