UCC2819AD

Overview

The UCC2819AD is a BiCMOS power factor preregulator designed for single-phase continuous conduction mode (CCM) applications. It operates with an average current mode control scheme and supports switching frequencies up to 250 kHz. The device features a maximum operating supply voltage of 17 V, with UVLO thresholds set at 10.2 V for turn-on and 9.7 V for turn-off. It provides peak gate drive currents of 1.2 A for both sourcing and sinking. The component functions within an operating temperature range of -40°C to +85°C and is housed in a 16-pin SOIC package.

Feature Summary

• Implements average current mode control for precise power factor correction
• Includes integrated overvoltage protection and enable functionality
• Provides high peak gate drive capability for efficient MOSFET switching

Applications

• Single-phase power factor correction circuits
• BiCMOS power factor preregulators
• Continuous conduction mode power supplies

Procurement Notes

Verify the specific suffix 'D' indicates the SOIC-16 package variant. Confirm the operational temperature grade matches the -40°C to +85°C requirement. Check for moisture sensitivity labeling if storage conditions are critical. Ensure the component meets RoHS compliance standards for your region. Validate that the discontinued status does not impact long-term availability needs.

Selection Notes

Select this component when designing single-phase CCM PFC systems requiring BiCMOS technology. It is suitable for applications needing average current mode control with integrated OVP. Consider the 16-pin SOIC footprint for board layout constraints. Verify that the 17 V maximum supply voltage aligns with the system design. Evaluate the 250 kHz frequency limit against EMI requirements.

Part Context

This part belongs to the UCC2819A series of power factor controllers from Texas Instruments. It is categorized under PMIC and specifically designed for power factor correction. The device utilizes BiCMOS technology to achieve high performance in single-phase applications. It serves as a preregulator solution for improving power efficiency in electronic systems.

Replacement Considerations

The UCC3819A is a comparable alternative within the same family. Note that the UCC3819A has a restricted commercial temperature range of 0°C to 70°C, unlike the industrial range of the UCC2819AD. Both devices share identical electrical characteristics and pinouts.