10.1.2 Input/Output Capacitors

When using a low-value ceramic input filter capacitor, locate it as close as possible to the V_IN pin of the IC. This eliminates as much trace inductance effects as possible and gives the internal IC rail a cleaner voltage supply. Some designs require the use of a feed-forward capacitor connected from the output to the feedback pin as well, usually for stability reasons. In this case, it should also be positioned as close as possible to the IC.