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  1. #1
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    Choosing IC with EN signal

    Hi,
    Please help me in choosing the type if IC. My input is 28V DC, if i give an enable signal as 3.3V, then my IC should pass the input voltage i.e 28V as output. I know it can be done using FET. But i have to implement it with IC, I dono what type of IC to choose. Please give me some suggestions.

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  2. #2
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    Re: Choosing IC with EN signal

    Hi,

    Depending on current and voltage drop you may use an
    * analog switch
    * analog multiplexer
    * high side switch

    Klaus
    Please don´t contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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  3. #3
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    Re: Choosing IC with EN signal

    Hi,

    IF the supply is 5V, SN7407 buffer (or similar) is an option, but 30V max. Vout could be an issue, so close to 28V. If the supply available is only 3.3V, not possible with this (old) IC.

    Not that isolation is a requirement, but an optocoupler could be used for this, too.



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