OK, my four ADP667s arrived today from a Polish eBayer... took a while, but they were cheap. I've been poring over the datasheet - I want the simplest configuration it seems - a steady 5v output from its OUT (pin 2)... I'll be using a power supply of 12v into IN (pin 8) and I'm not doing anything complicated so GND (pin 4), SHDN (pin 5) and SET (pin 6) can all be connected to ground. OUT (pin 2) can go to a capacitor.
**broken link removed**
Now, what I'm perplexed by is whether my IN (pin 8) also needs to connect to ground, via a capacitor? That diagram seems to infer it does... but I'm not sure what rating of capacitor, or whether it's even true that it is needed. Some of the other diagrams, i.e. figure 3 on the same page of the datasheet, don't show that on the IN pin - they just show a source voltage coming in, nothing more.
I wonder if anyone knows whether I can get away using this ADP667, to provide 5v, with just the
one 10µF capacitor on the OUT pin (pin 2)? Also, does the IN pin (pin 8)
need to be provided with 12v from the source and then go straight to 0v too?
Any guidance appreciated before I break these.