DC-DC Step/down module based on XL4015, option to set CC (constant current) or CV (constant voltage) mode.

Specifications:

Input voltage range: 4 - 30V DC
Output voltage range: 1.25 - 28V DC,
adjustable Output current: 0 - 5A
Operating temperature: -20 to +85°C
Operating frequency: 180KHz
Efficiency: 85 to 96%
Dimensions: 51 x 26 x 13 mm

Output voltage adjustment tip: trimmers are sometimes factory set completely outside the area where the output voltage is regulated. If the output voltage regulation does not work, try turning the trimmer 25 times to one side, then 50 times to the other.

The package includes one Step/down module.