I've built a simple linear regulator power supply using the LM1084ADJ. The input is 16 volts, the output is 13.4 volts, and the load is about 1 ampere. It works just fine with an unbypassed ADJ pin, but if I put any capacitor even close to what is recommended on the data sheet (10-200 uF), the regulator takes many seconds (10+) to come up to the regulated output voltage. Sometimes it never reaches the correct output voltage. I've tried both tantalum and aluminum electrolytics in that position with no discernible difference. Even a 4.7 uF on the adjust pin causes a very slow ramp up of output voltage. I have 47 uF tantalum capacitors on the input and output (the values were in stock). Just wondering what to do at this point. My default is to just leave the ADJ bypass off, or try going to something in the less than 1 uF range until the voltage comes up as expected. Thanks.
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