The LM337SP with Linear Voltage Regulators 1.2-37V Adj Negative is an adjustable 3-terminal negative voltage regulator manufactured by STMicroelectronics. This device is designed to provide a regulated negative output voltage adjustable from 1.2V to 37V. The regulators offer a wide range of features, including excellent line and load regulation, thermal stability, and input voltage up to 40V. It also has an internal current limit, thermal protection, and binding post connectors for adjustable output. It is available in various packages for easy mounting on PCBs and has low operating current, making it suitable for battery-powered applications.