Hi there, is it possible to get 5V to Power a FPV Camera from my RX?

Basically, I have a SP Racing F3 Flight Controller. I am using the IO_1 port PPM to power my receiver (FrySky iA6B RX) AFHDS 2A and communicate all the channels.

I know that the Receiver will output 5V from one of the other ports, but will there be enough power supplied from the flight controller on IO_1 to power the receiver and the camera. I am worried that it will brown out mid flight and I will lose control.

FC Manual
RX Manual

Image attached to explain.

Thanks
Ardalan G.

The PDB can output at least 2A, the RX can also output 2A. I'm just worried about how much the FC can output through the IO_1 port, so if someone could tell me that, that would be great.