hi Rich,
ohh, that's very unfortunate
Hmmm, the datasheet says, the Vcore Range is (working) up to 1.1 volt and maximum limit 1.2 Volt
Can you reproduce the vcore value you get, at the moment your pot fails?
andY
Not 100% certain I have a failure but looks like it. Trouble is that the pad I have soldered to came away and I had to find an equivalent point to solder to which was easier said than done because of the low impedance of the Inductor making it difficult to trace what went where.
Anyway the voltage adjusts fine so I think I have that correct, but although it will hash it's obviously not right as rate is very low and lots of HW errors even at 100Mhz, what is surprising is that it works at all?
To answer your question, at the moment I do not want to go OC again to make a measurement. However without the Pot in circuit there is no feedback from Vout to Pin 1 and I assume that the Buck will wind the volts right up, which could get close to 5V?
Rich