The TPS54531DDAR is a synchronous buck converter IC from Texas Instruments, designed for efficient voltage regulation in various applications. It features a wide input voltage range of 3.5V to 28V, adjustable output voltage down to 0.8V, and supports up to 5A continuous output current. The device has high efficiency at light loads due to its pulse skipping Eco-mode and fixed 570kHz switching frequency. The TPS54531DDAR is suitable for powering microprocessors, FPGAs, and other digital loads in applications such as industrial automation, telecommunications, and automotive electronics. It offers a range of protection features, including cycle-by-cycle current-limit, frequency fold back, thermal shutdown, and overvoltage transient protection. The device is available in an easy-to-use thermally enhanced 8-pin SO PowerPAD package. Features The TPS54531DDAR features include: 3.5V to 28V input voltage range Adjustable output voltage down to 0.8V Integrated 80-mΩ high-side MOSFET, supporting up to 5A continuous output current High efficiency at light loads with pulse skipping Eco-mode Fixed 570kHz switching frequency Typical 1µA shutdown quiescent current Adjustable slow start limits inrush currents Programmable UVLO threshold Overvoltage transient protection Cycle-by-cycle current-limit, frequency fold back, and thermal shutdown protection These features make it suitable for powering microprocessors, FPGAs, and other digital loads where high efficiency and compact size are essential.