The Holtek HT7121-3 is a low dropout (LDO) regulated single-channel voltage regulator which is packaged in an SOT-89 RoHS package. It is a high precision, high stability, low power consumption, and high quality device. This regulator is designed for use in a variety of applications including power management, medical, consumer, and automotive applications. The low dropout voltage of the HT7121-3 allows it to be used with a low input voltage. It can also be used in applications that require ultra-low noise, low ripple, and fast transient response. With its high voltage rating and wide temperature range, the HT7121-3 is ideal for use in a variety of environments. It features high resolution, low quiescent current, and fast transient response and latch protection to help prevent short circuiting. In addition, it is RoHS compliant.