QWhat is the maximum current injection which the REFIN can accept?
AThe 60uA is what typically flows on that pin, but it rarely if ever reaches
even 1mA. The voltage rating is the critical item here, if that is exceeded by
0.7V, then a protection diode will turn on, with the possibility of a large
current flow occurring which could damage the circuitry, but the pin can handle
quite a bit of current before long term damage results. For example, the
latch-up tests are specified upto at least 100mA.