hi.. m attaching my circuit ... output is supposed to be V=Vref(1+R2/R3)... but m not getting this value... infact i cant increase my output beyond 13.45V...
hav a luk at it n pls trace out the error or watever it is !!...
The V[z] pin if not used should be left unconnected, but if your simulator doesn't want to accept it that way try to shorten this pin with V[out] .. see attached picture ..
Connecting Vz to ground makes the zener diode limit the output voltage. I thought, it would be obvious.
In a real design, you possibly damage the chip with your circuit.