DC-DC Step Down XL7015 input voltage to 80 volt

From the shop's description

XL7015 DC - DC buck type module is A highly efficient, high pressure step-down DC - DC converter, provides the highest 0.8 A output current capability, low ripple, excellent linear regulation and load regulation, up to 80 v input voltage, more than 2596 modules, . VIN Input voltage (5v - 80v) . . VOUT output voltage (5v - 20v) adjustable . . Max current 0.8 A . . power 7 watt .