The TPS73133DBVR is a low dropout voltage regulator (LDO) manufactured by Texas Instruments. It is a 150-mA, Cap-Free NMOS regulator with low quiescent current and is designed for portable applications. This device offers many features, including a wide operating input voltage range of 1.8 to 5.5V, an output voltage range of 1.2 to 4.3V, a low dropout voltage of 200 mV at 150 mA, and an adjustable output voltage. The device also has auto-discharge and low quiescent current features, allowing it to detect and discharge any additional voltage found on the output pin. Additionally, the TPS73133DBVR has thermal shutdown protection, an adjustable output voltage range from 1.215 V to 4.075 V, and a fixed output voltage of 3.3V. The device also features an N-channel topology, an output current of 150 mA, and an operating temperature range of -40°C to +85°C, making it suitable for a wide variety of applications.