LSF01-K5BxxSS series is regulated single-wire converters with an ultra-low DC input of 8(15)-380VDCThe products feature high reliability. lt can be widely used in areas of single-wire smart home withextremely demanding on power consumption requirements, non-isolated power supply products, andreplace low-efficiency resistance-capacitance step-down power supply circuits (such as white goods.smart meters, automation instrument power), and standby power for appliances with low powerconsumption requirements (such as ultra-low power standby power for green and energy-savingappliances), etc. The converters provide stable operating voltage for the load. For extremely harsh EMCenvironment, we recommend using the application circuit show in Design Reference of this datasheet.