I have problems adjusting the potentiometer to obtain an stable 18.0 v output. the potentiometer is extremely sensible, and the most minimal movement causes a ±0.5v variation at the output, so it’s really hard to get the desired value and because of this, the output voltage would be likely unastable, taking into account that the regulator will be instaled in a robot.
this only happens when the output voltage is being setting above 14v aproxemily. The input is connected to an 3S 11.1v Lipo battery, with a 47uF capacitor. The load is an 1k resistor.
What could I do to solve the problem? I can replace the potentiometer with smd resistances, what values should I use to get 18.0v at the output?