Hi,

> +VUSB passes through BD6, a PZ1608D221TF [4], which the data sheet
> rates at 800 mA (Adam, [6] shows a rating of 1 A ?).
>

The part is used on AVT2. Yes, the Max. Rated Current is 1A. It's easy for
sourcing.
The main 3V3 downstream consumption is limited by EUP3406.


> Unfortunately, there is no proper current limiter in the path. But
> nothing bad happened on those occasions when I accidently shorted
> 8:10 card power.
>

A short protection by EUP3406 itself.
-adam
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