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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@DrAzzy
With 4.5v on the gate, it is rated for that 4-4.9A continuous current. Rds(on) typically 0.065ohm @ Vgs=4.5, sat 4.0A, ohm's law gives us 0.26 volts dropped over the fet. 4A*0.26V=1 W
His first statement was in reference to figure 3 (note - this is in the second set of graphs, not the ones on the second page w/no figure numbers), which shows a graph of current vs gate voltage - that at first looks to be saying that at 2v you can get 2A of drain current. But the graph says that that's at Vds=5V, that is with a 5v drop across the fet - that is to say, this isn't a graph depicting useful operating conditions. As you can see, the lines fly off the top of that graph when Vgs enters typical operating conditions :-)