ADP125 and ESR values

Document created by analog-archivist Employee on Feb 23, 2016
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Four parallel capacitor 1210-X7R-6.3V-47 uF have ESR 0.0005Ω.
But the datasheet specifies that Capacitor ESR should be more
0.001Ω. Can you advise.


Theoretically the ESR of the multiple ceramic capacitors can get very low, even
sub milli-ohm.  However, in practise, the resistance of the interconnects will
always be at least a few milli-ohms so the minimum ESR of the total capacitor
array and interconnects will be at least 1 or 2 milli-ohms.