The L7987 is an integrated circuit voltage regulator manufactured by STMicroelectronics, part of the L79x7 family of Switching Regulators. It is a monolithic integrated switch mode voltage regulator suitable for a wide variety of applications and is designed with high-frequency, low-voltage, full-controlled bridge rectifier circuit suitable for buck or boost operations. It features an internal oscillator, soft start, enable, external synchronization, adjustable standby feature, and an over-voltage protection circuit. The L7987 is both lightweight and compact, making it an ideal choice for applications that require low-voltage and high-frequency operation.