Hello Mr Jones & Taichi
I am also facing the same problem.
I am using LM1084adj
In my design Vin=12V,R1=220R, R2=1K, I need Vout= 7V and Iout=3.5Amp.
Without load Vout=7.3V.
With Load Vout=5V and it is also varying but Iout =0.2Amp.
Can you please suggest us suitable solution for getting 3.5Amp output.
Thanks and Regards
Amaresh