The BL9161G-18BPRT is a three-pin SOT-23-3 Linear Voltage Regulator (LDO) manufactured by Belling. This voltage regulator is RoHS (Restriction of Hazardous Substances) compliant and is designed to provide a constant regulated output voltage. It offers an output voltage of 2.8V, is a low-dropout regulator (LDO) with a maximum dropout voltage of 5mV, and features excellent load and line regulation with low ground current. It has a maximum output current of 200mA, a maximum operating ambient temperature of 125°C, and a maximum quiescent current of 700mA. Additionally, it offers a RMS noise of 5mV and has an operating voltage range of 2.5V to 18V.