The SK6018D4-18 with DFN1x1-4L ROHS Linear Voltage Regulator (LDO) is a 4-pin voltage regulator from Suntek. This device uses advanced CMOS technology to provide low-dropout voltage regulation. It features low noise operation, low quiescent current, and low power dissipation. The device has an output voltage range of 0.8V to 6V, an adjustable output current range of 0.125A to 0.250A, and an adjustable output power range of 1W to 2W. The device is a high-side regulator, meaning the five pins on the back are for the voltage input, ground connection, output voltage, and enable. This voltage regulator is compliant with the European Restriction of Hazardous Substances (RoHS) directive.