I am using an LT3083 as a 2-terminal current source, per the last figure in the data sheet. The LT Spice simulation works as expected, but the actual circuit has a residual voltage of over 2V when the set pin is grounded. I realize that there is a minimum 1mA current, but this represents 10mA of current. I see nothing in the data sheet that explains this.
I am able to make the circuit work in my application by using a resistor divider for the load, then shorting across the bottom load resistor with a MOSFET at the time I pull the set pin low with another MOSFET.
It would be easy to ignore this and move on, but I don't like the potential for latent failures due to something I don't understand.
I can send or attach the spice file if that helps.