The UCC28C44P is a high-performance, biCMOS current-mode PWM controller from Texas Instruments. It is designed to offer a variety of features that enhance performance in power supply designs. This integrated circuit is particularly suitable for off-line and DC-to-DC converter applications, providing the necessary control functions to deliver stable and efficient power management.

Key Features

• BiCMOS Technology: The UCC28C44P utilizes BiCMOS technology, which combines the advantages of both Bipolar and CMOS transistors, offering high-speed operation and low power consumption.
• Current-Mode Control: This feature provides improved transient response, simplified loop compensation, and inherent protection against overcurrent conditions.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is trimmed to ensure precise duty cycle clamping, which is critical for reliable operation and protection of the power supply components.
• Automatic Feed Forward Compensation: This enhances the performance by compensating for varying input voltages without the need for additional external components.
• 100% Duty Cycle Capability: The controller can operate with up to a 100% duty cycle for maximum power output, which is useful in battery-operated applications.
• Low Startup and Operating Current: The UCC28C44P features low startup current (typically 0.5 µA) and low operating current (typically 2.5 mA), making it an energy-efficient choice.

Applications

The UCC28C44P is ideal for a wide range of applications, including:

• Switching power supplies
• DC-DC converters
• Off-line converters
• Power inverters
• Battery chargers
• LED drivers

Package and Availability

The UCC28C44P is available in an 8-pin PDIP (Plastic Dual-In-line Package), making it compatible with standard breadboards and sockets for easy prototyping and testing. The device is also available in a variety of temperature ranges to suit different application requirements.

For detailed technical specifications, application notes, and support documentation, please refer to the official Texas Instruments website or contact their support team for assistance.