I am interested in using a LDO linear regulator, e.g. the On Semi NCP5501DT50RKG, to step down a voltage from 6-9 V to 5 V. It specifies that it is stable with output capacitors between 1 and 10 μF with an ESR of less than 4 Ω:
However, I'm intending on using it to power an IC which suggests the use of a >47 μF bypass capacitor.
With a low-ESR ceramic capacitor (perhaps 2.2 μF) at the output of the regulator, would the addition of a high-ESR electrolytic bypass capacitor cause any instabilities? Is this answer true in general for all LDO regulators which are stable with low-ESR output capacitors?