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power line multiplexing up to 2W

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podoljano

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Hi i cant seem to find a way to mutiplex different supply voltages(5, 3.3, 2.5 and 1.8V and ground) at a power of max 2W to a single pin. All multiplexers i found are has a max tolerance of approx 50mA. I dont care about switching speed.
Is there any IC solutions for this, or do i have to build this with highside fets? since pcb space is a concern a ic solution would be awesome!

thanks in advance
Nikolaj
 

BradtheRad

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The 4066 IC will not carry the amount of amperes you want. Its 'On' resistance is too high.

There are analog switches with an 'On' resistance of 10 ohms.
Example, LM1037, LM1038.(Both are dual 4-channel analog switch.)

You might end up having to parallel a few devices, to get the power you want.
 

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