The HT7133-2 is a low dropout regulator IC from Holtek. It is packaged in a SOT23-5 (small outline transistor) surface mount package, which is RoHS compliant, meaning it is free from certain hazardous substances. This IC is a three-terminal adjustable voltage regulator with an output current capability of up to 1 A and a minimum output voltage accuracy of ±2%. It features an ultra-low dropout voltage of 200 mV, making it suitable for battery-powered or low-voltage applications. It is designed to provide a low noise, low ripple output voltage that is adjustable from 1.5 V to 17 V (fixed option available) with a low quiescent current. This makes it an ideal choice for a multitude of applications including post-regulators for switching power supplies, low-noise regulators, battery-powered systems, telecom systems, motor control, remote control, and more.