Yes, I mimed the design of a similar 317 circuit, but using LR8K4 chip, I know that i need a lot of BJT for 250 mA but it was an idea to design o low side CC control and using the performances of LR8K4 chip.
I tested the circuit, and it works well.
Now I would like to test an ibrid using mosfet as finals...
Adapting the power stage with mosfets..., also changing the control of 1625 with a mosfet...