The LR2010B-T30 with dropout regulators (LDO) SOT23-3 RoHS is a three-terminal positive voltage regulator manufactured by LR. It is designed to provide a constant voltage supply for integrated circuits, and can be used for a wide range of applications including computer, audio, automotive, and home appliances. The regulator operates within a wide input voltage range of 1.7V to 28V and provides an output voltage of 3V. It also features a wide operating temperature range from -40°C to +125°C. In addition, it offers a low dropout voltage, high efficiency, and fast response time to transient events. The LR2010B-T30 also has RoHS (Restriction of Hazardous Substances) certification which ensures it is compliant with environmental regulations.