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Obtaining the ON resistance typ. and max. values by dividing the typ. and max. values of the input/output voltage difference listed in the datasheet by the load current under the conditions and then multiplying with the load current makes it possible to calculate the typ. and max. values of the input/output voltage difference for an arbitrary load current. From a load condition Io=500mA, ΔVd(Max)=0.9V, and input/output voltage difference ΔVd(Typ)=0.6V listed in the datasheet, the maximum and typical values of output transistor ON resistance is
Ron(Typ)=ΔVd(Typ)/Io=0.6A/0.5V=1.2Ω
Ron(Max)=ΔVd(Typ)/Io=0.9A/0.5V=1.8Ω
. For example, with a load current Io2=600mA, the typical and max values of input/output difference ΔVd2(Typ) and ΔVd2(Max) are calculated from the product of the ON resistance and load current:
