Hi all!
I have implemented both the TPS7A4901 and 3001 regulators as described in the data sheets. The 3001 is completely stable with good noise figures (as expected). However the 4901 is exhibiting instability, with the output varying by +- 2mV at extremely low frequency. The input voltage is 18v, output for both is +-12V. Both have exactly the same layout. The 4901 exhibits this behavior at both no load and loaded conditions. What am I doing wrong?
Cheers,
Geoff Jones