The Holtek HT7544-2 is a low dropout regulator in a SOT23-5 RoHS package. It is an electronic component designed to regulate voltages and current, and can help maintain a stable output in spite of input voltage or other environmental changes. The HT7544-2 has an extremely low quiescent current, a temperature stability of 0.3%, and a dropout voltage of 500mV. It provides excellent protection from short circuits, thermal shutdown, over-current protection, and reversed polarity input. It is suitable for a wide range of applications including automotive, telecom, and portable devices. The HT7544-2 is RoHS compliant, making it an ideal choice for green designs.