UCC28C44DR – TEXAS INSTRUMENTS

The UCC28C44DR is a high-efficiency, current-mode, synchronous buck converter controller from Texas Instruments, optimized for applications requiring precise voltage regulation and fast transient response. Packaged in a space-saving 8-pin SOIC, it operates from an input voltage range of 4.5V to 18V, enabling its use in a wide variety of power supply designs. Key features include a programmable switching frequency (up to 1MHz), adjustable soft-start, and cycle-by-cycle current limiting for robust protection. The device incorporates internal compensation circuitry, simplifying design and reducing component count. Its synchronous rectification architecture minimizes conduction losses, leading to improved efficiency, especially at lighter loads. Typical applications include intermediate bus converters in distributed power architectures, point-of-load converters for FPGAs and ASICs, and battery-powered systems demanding high efficiency. The UCC28C44DR’s ability to handle high switching frequencies while maintaining excellent transient response makes it ideal for applications sensitive to output voltage ripple and noise. Its ease of use and robust protection features streamline the design process, reducing development time and improving overall system reliability.