Load switch with FET - Is it really that simple?

rprodrigues said:

Is this the maximum, the common or the threshold value that turns on the transistor?

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audioguru said:

Look at the datasheet for any Mosfet. Its threshold Vgs is where its current is only 0.25mA so it is barely turned on.
Its on-resistance is spec'd at a very low resistance when its gate to source voltage is 10V or 4.5V or 3V.

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