The Holtek HT7144-1 is a low dropout regulator (LDO) positive fixed device with a dropout voltage of 55mV at 1mA, 30V of input voltage, 4.4V of output voltage and a maximum output current of 30mA. It comes in a SOT-89-3 package, and is RoHS compliant. It has a typical quiescent current of 18uA when its output is grounded, making it suitable for battery-powered applications. The HT7144-1 is designed with features like temperature compensation, current limit protection, thermal shutdown features, and short circuit protection, making it a highly reliable and robust device. It is suitable for use in power supply systems of consumer applications, such as mobile devices, PCs, and digital equipment.