MMPF0100F1AEP Coin Cell polarity protection

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MMPF0100F1AEP Coin Cell polarity protection

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psayles
Contributor I

MMPF0100F1AEP Coin Cell polarity protection - is there any need for polarity protection on the coin cell input?

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guoweisun
NXP TechSupport
NXP TechSupport

HI

Unnecessary to this additional circuit,if you want to have protection please share your circuit for review!

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psayles
Contributor I

I'm just looking for information on whether the PMIC could be damaged if the coin cell was inserted backwards and the battery polarity was reversed.

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guoweisun
NXP TechSupport
NXP TechSupport

Absolutely damage the PMIC if reverse the input voltage whatever the battery or  VINx.

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psayles
Contributor I

What if only the coin cell is reversed and no power is applied to VIN?

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guoweisun
NXP TechSupport
NXP TechSupport

Also have damage risk!

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