i.MX ProcessorsのトピックRe: i.MX6 Coin Cell Charge Current

i.MX6 Coin Cell Charge Current

ko-hey — Mon, 10 Nov 2014 08:26:12 GMT

I have a question about PMIC Coin Cell Charger Specifications.

MMPF0100.pdf has a flowing table.

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

Is the number per second or hour?

Best Regards

Re: i.MX6 Coin Cell Charge Current

Yuri — Mon, 10 Nov 2014 10:44:08 GMT

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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Re: i.MX6 Coin Cell Charge Current

ko-hey — Tue, 11 Nov 2014 00:20:58 GMT

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,

Re: i.MX6 Coin Cell Charge Current

ko-hey — Tue, 11 Nov 2014 02:07:27 GMT

Dear Yuri

Sorry, I was misunderstood.

Please forget the above question.

ko-hey

Re: i.MX6 Coin Cell Charge Current

Yuri — Tue, 11 Nov 2014 05:50:42 GMT

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

~Yuri.

Re: i.MX6 Coin Cell Charge Current

ko-hey — Tue, 11 Nov 2014 07:07:07 GMT

Yuri

Thanks a lot!

ko-hey