nPM1300 - max. vbus prolonged periods

[Achim Kraus]

The spec. gives a 22V max for a limited amount of time. And max. 5.5V as recommended operating conditions.

But I wonder, what will be "inbetween", e.g. 7V for hours?

From other similar devices I would guess, that this depends on the voltage and current, because of the heating of some regulators. Is that the case? So, if only a few 10mA current are in use, 7V may not harm? Or must the 5.5V be obeyed, if it is considered for hours?

[Turbo J]

Once VBUS raises above VBUS_OVP (5.5V typical) the device will be put into overvoltage protection and won't do anything else useful.

With the device mostly shut down, the only remaining issue would be some kind of chip internal break down - which is only relevant close to the top end of the voltage range.

But be careful: This assumes that there is no alternate (or leakage) path for VBUS to go to more sensitive parts in the circuit.

[Achim Kraus]

Thanks a lot.