ST1S40IDR ST DC-DC Converters

The ST1S40IDR is a 3A step-down DC-DC converter with 850kHz fixed switching frequency from STMicroelectronics in HSOP-8 (SO-8 with exposed pad) surface-mount package, featuring synchronous rectification for high efficiency. For selection, verify input from 4V to 18V, adjustable output from 0.8V to VIN, 3A continuous output current, internal power MOSFETs with low RDS(on), and operating temperature from -40°C to +125°C. Features include internal compensation for simplified design, soft-start to limit inrush current, current limiting with pulse-by-pulse and frequency foldback protection, thermal shutdown, power good indicator, and inhibit pin for power sequencing. Ideal for distributed power systems in industrial automation, battery-powered equipment, consumer electronics, set-top boxes, and any step-down DC-DC conversion requiring up to 3A output with high efficiency in compact HSOP-8 package. In stock at HL Electronics – request a quote for fast delivery.