STMicroelectronics Automotive Buck 4 V 3 A Step-Down DC-DC Converter IC AST1S31HF

Up to 4 V, 3 A step-down 2.3 MHz switching regulator for automotive applications Product overview: AST1S31HF from STMicroelectronics is a Step-Down DC-DC Converter IC for stable power rails, DC-DC conversion, battery-powered electronics, automotive modules, and embedded power management. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include Automotive, Buck, 4 V, 3 A, 2.3 MHz. Search-friendly keywords include voltage regulator, LDO, buck converter, boost converter, power rail, Automotive, Buck, 4 V, 3 A, Step-Down DC-DC Converter IC. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 739-AST1S31HF can be used for catalog matching and distributor lookup.