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3.3V solid state switch to switch 300ma at 12-15V
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gusisin 6 months ago
Hi all, I am building circuit which involves switching a standard 12V auto relay my processor is an pi pico which produces 3.3v on the gpio. I could use a 3.3v relay but I would like to use a MOSFET to switch instead because of the environment in which it will operate. Could anyone help me out with a suggestion for a circuit/BOM that might serve this task. I am not experienced with MOSFETS and rather than blow up several while trying to figure it out I thought I would ask here? Thank you in advance, Gus
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andyfierman 6 months ago
Have a look at: [https://oshwlab\.com/andyfierman/Low\_side\_NMOSFET\_switch\_\-wu0ictL3l](https://oshwlab.com/andyfierman/Low_side_NMOSFET_switch_-wu0ictL3l)<br> <br> and: [https://arduinodiy.wordpress.com/2012/05/02/using-mosfets-with-ttl-levels/](https://arduinodiy.wordpress.com/2012/05/02/using-mosfets-with-ttl-levels/)<br> <br> [https://www.mouser.co.uk/c/semiconductors/discrete-semiconductors/transistors/mosfet/?q=logic%20level](https://www.mouser.co.uk/c/semiconductors/discrete-semiconductors/transistors/mosfet/?q=logic%20level)<br> <br> [https://www.mouser.co.uk/datasheet/2/308/1/FDN359BN_D-2312922.pdf](https://www.mouser.co.uk/datasheet/2/308/1/FDN359BN_D-2312922.pdf)
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