Hello drojf, I am thinking of using this IC in a project, once I have not found a similar project on the Internet I would like to ask you if your design worked fine and if you have any recommendation. Thank you!

Sorry for the late reply, but maybe someone else will find this useful.

There didn't seem to be any obvious gotchas with the AL3065. I do remember having problems getting it working at the start, but that was just because my power supply was current limiting. Make sure you have a decent power supply that can actually supply the current you expect.

In terms of the LEDs you connect to, if I were to do this all again, I would use these: https://www.digikey.com.au/product-detail/en/BXEB-L0560Z-50E2000-C-B3/976-1735-ND/7907664 or similar aluminum led light strips, since they are very cheap and efficient. The can take a higher current as they are wired in parallel (and I assume the LEDs matched such that you don't get thermal runaway). There are various different types available on Digikey, under LED COBs (search by highest lumens/Watt).

On my PCB I don't think I allocated a jumper/header for measuring current - this would have been useful. Allocating multiple spaces for the current sense resistor instead of one big hole is a better idea. Now that professionally manufactured PCB costs have come down, might as well make your initial board quite large so it's easier to play around with.