Small update here: people from LTC told me that LT8613 is not a good candidate because:
with the LT8613 you can run in thermal problems at 25W-30W output power, the Rja=40C/W.
I would suggest to use the LT3741 it is available in TSSOP package and also works in CC and CV mode.
The
LT3741 has current control inputs (actually two of them
CTRL1 and
CTRL2) but lacks current monitor output
. Therefore I'll need to deploy an external current monitor and has to back into quest for a solution that works with low output voltage (down to 1V).
I also asked TI people if they have something similar to LT8613. There I got
LM(2)5117 where situation is opposite: it has current monitor output (
CM pin) but without possibility to limit output current. It's advertised with "Programmable Current Limit" but it's actually fixed with
Rsense. On top of that if max. current is reached for more then 256 cycles it will enters so-called hiccup mode.