ST1S03PUR ST DC DC Switching Regulators

The ST1S03PUR from STMicroelectronics is a compact, high-frequency step-down DC-DC converter delivering up to 1.5A output current. For selection, its key features are a wide 3V to 16V input range with an adjustable output from 0.8V to near input voltage, covering common 5V, 9V, and 12V rails. The 1.5MHz switching frequency reduces the size of external LC filters, saving PCB space. A low 1.5A internal switch, cycle-by-cycle current limit, and thermal shutdown with automatic restart simplify design and ensure reliability. Applications span consumer electronics, computing peripherals, industrial PLCs, point-of-load regulation, and low-power telecom infrastructure. Its high frequency and integrated protections are particularly suited for set-top boxes, hard disk drives, and space-constrained embedded systems where efficient conversion and stable operation across a 0°C to +125°C range are critical. In stock at HL Electronics – request a quote for fast delivery.