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If you want to be extra sure, put a fast blow 500ma fuse in series with the USB port and the switcher.
I have a use for these. Thanks for the link.
You can connect it inline with either of the supply pins to the boost converter (preferably the +5v line though)How a fast blow fuse work by the way? I would series it between the INPUT and PIN 4 which is the switch, right?
You can connect it inline with either of the supply pins to the boost converter (preferably the +5v line though)
If there is a surge of more than approx 500ma then the fust will blow and in theory protect your USB port from overload