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Help designing automotive protection circuit

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Rafael

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Hey folks...

What should I use to protect my electronic module (LDO 3.3V regulator, uC, RF transceiver) on automotive enviroment... This module will consume about 50 mA.

I found this on ST site... is it good enough or should I add something else, like inductor, PI filter, and so on...
32_1165846419.JPG


Any suggestion are welcome :)

Thanks
Rafael
 

you need to drive your cricuit using car battery , what is your problem.
is there any prob of voltage ?
 

yes manish12, I´ll power my circuit using car battery...

And I know that I must have transient protection, for example, spikes on the 12 V line when you start the car.
 

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