Can an IOIO output pin replace a 3V Lithium Battery (CR2032)?

[Al B]

Hi there,

The attached board is normally powered by 3V Lithium Battery (CR2032) with discharge current of 0.2mA, can I replace the batter with one of IOIO 3.3V output pins?

[Ytai Ben-Tsvi]

0.2mA sounds suspicious. Are you sure this is the peak current? A picture is completely useless - specs are better...

Any reason why not to power the thing out of the IOIO 3.3V line? Do you want to power it on-off?

On Sat, Feb 2, 2013 at 7:32 PM, Al B <cagi...@gmail.com> wrote:

Hi there,

The attached board is normally powered by 3V Lithium Battery (CR2032) with discharge current of 0.2mA, can I replace the batter with one of IOIO 3.3V output pins?

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[Al B]

Ytai, you are absolutely correct. There is not reason why not to power it out of the IOIO 3.3V line since that does exactly what I want (i.e. have it power all the time, not on & off).

One more question. Do I need to add a diode between the IOIO 3.3V line and the board positive connector or is it just fine connecting it directly?

Thanks again, and best regards!

[Ytai Ben-Tsvi]

Most likely you can connect it directly, but it hard to answer without knowing anything about this module.

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