Tool/software:
I 'm trying to understand the PSRR graphs present on page 8 of the TPS7A8101 DataSheet.
The graphs Figure 16 and Figure 18 show significantly different curves but I do not see which parameters change between the two graphs: the currents are the same as well as the values of the capacitors and the dropout value.
Can you enlighten me on this problem?
Thanks in advance.
Hello,
Thank you for your question.
It seems like one thing that is different between some of the graphs is the headroom. For example, Vi - Vo=0.5, means that there is 500mV of headroom above the output, which changes the PSRR curves. Some of these graphs are also accompanied by a change in current across the different headrooms:
Figures 17 and 18 have a typo in the conditions. Cout for Figures 17 and 18 should be 100uF.
Figures 15 and 16 correctly state a Cout of 10uF.
Hope this helps to clarify this issue!
Best,
Hannah
