I built a very basic circuit to get around 5.5V from a +15V source
I have a 220 Ohm between Adj and Vout and one 470 Ohm, one 220 Ohm and two 100 Ohm in parallel between Gnd and Adj summing up to about 740 Ohm that should give me about 5.45V between Vout and Gnd.
With a 1.5k Ohm Load between Vout and Gnd I get 5.5V. However with a 470 Ohm Load I only get about 3.7V.
Putting in 100nF capacitors between Vin and Gnd and Vout Gnd did not help
Any Ideas what I'm doing wrong?