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Visitor II
February 19, 2025
Question

MOSFET N

  • February 19, 2025
  • 3 replies
  • 477 views

Hello, I need an N-channel MOSFET that operates perfectly as a switch (on/off) with a gate voltage range of 0V to 3.3V. Could you recommend one? image-20250114-161053.png

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    3 replies

    Technical Moderator
    February 20, 2025

    Such PWM is usually generated with significantly more than 10Hz, for which a MOSFET is usually no longer controlled directly from the PWM output, but via a gate driver.

    However, if you drive the pump from 5V, the gate driver can also use 5V, which makes it easier to select the MOSFET.

    In addition, you have not specified the required current of the ‘Pompe’ (pump?).

    Regards
    /Peter

    Graduate II
    February 20, 2025

    Dempends of the size of your pump
    but these should work (gate + mosfet inside the same dice)

    Javier1_0-1740053110742.png

     

    Super User
    February 20, 2025

    Hi,

    typical for this, i use logic level mosfets :

    - (not too much current, small load) IRLML6344 , 30V , 4A ; SOT-23 ;

    - (for bigger power:)  IRL540 , 100V , 30A ; To220

     

    -- or any other logic level mosfet, that matches your load.