Thanks Crust. You are right, the current ratio is (R2)1000 Ohms : (R1)220 Ohms. As suggested by another friend, I will change the POT value to 5000 Ohms. This should solve the problem.crust said:Post your circuit -- but you might not have the right values for your resistor and potentiometer.
The equation is V=1.25(1 + R2/R1)
R2 goes from the adjust pin to ground and R1 goes from adjust to the output. R2 should be about 200R1 or thereabouts.