Hello Andres,

Constant current only work under the case of 2v output.

And please kindly notice, constant current adjustment is different from voltage adjustment.
For most of converters, output current can’t be adjusted directly, which is decided by load mainly. The current adjustment here is for limited output current.
For example, if you set 3A output, but  load only need to  draw 2A, the actual output is just 2A.
When load want to draws over 4A, converter will limit output current to  3A. in that case, it is in constant current mode.

For any more questions, please kindly let us know.

Best regards.