Datasheet XL4015 (XLSemi) - 8

Datasheet 5A 180KHz 36V Buck DC to DC Converter XL4015 Typical System Application (TTL shutdown function)
Logic level signals shutdown function can be used in typical system application with external components. When the TTL high voltage above 3.3V(referenced to ground, lower than VIN), the converter will shutdown, input current less than 5mA; when the TTL Low voltage below 0.8V(referenced to ground), the converter will turn on. Figure9. XL4015 Typical Application Circuit Rev 1.5 www.xlsemi.com 8