i.MX6 Coin Cell Charge Current

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i.MX6 Coin Cell Charge Current

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ko-hey
Senior Contributor II

Hi

I have a question about PMIC Coin Cell Charger Specifications.

MMPF0100.pdf has a flowing table.

coincell_current.PNG.png

Coin cell charge current in on mode ICOINHI is typically 60μA.

Is the number per second or hour?

Best Regards

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Yuri
NXP Employee
NXP Employee

  The Coin Cell Charge current is just 60 uA. It is applied to compensate

cell self discharge. The coin cell charger may be software enabled / disabled.


Have a great day,
Yuri

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Yuri
NXP Employee
NXP Employee

  The Coin Cell Charge current is just 60 uA. It is applied to compensate

cell self discharge. The coin cell charger may be software enabled / disabled.


Have a great day,
Yuri

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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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ko-hey
Senior Contributor II

Hi Yuri

Thank you for your reply.

However, unfortunately I think my intention is not transmitted.

I'll give you an actual example.

If I use a coin cell that has capacity of 6.5mAh, How long will it take to charge it?

In my understanding, the charger supplies 60uA of current per second.

So it will take 15-20 minutes.

Is this correct?

Best Regards,

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Yuri
NXP Employee
NXP Employee

To fully charge, say 6.5 mA x hour  - it will take about 110 hours ( 6.5 mA x hour  / 60 uA ).

~Yuri.

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ko-hey
Senior Contributor II

Yuri

Thanks a lot!

ko-hey

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ko-hey
Senior Contributor II

Dear Yuri

Sorry, I was misunderstood.

Please forget the above question.

ko-hey

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