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Author Topic: 3.3V trail when battery voltage is low?  (Read 808 times)


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3.3V trail when battery voltage is low?
« on: September 04, 2017, 06:34:02 PM »
On the A13 PCB, when using the battery manager:

The AXP209 output IPSOUT is battery voltage right?

But then what happens when battery voltage is low ( 3.1V for example) as the 3.3V buck (SY8008C) will not be able to output 3.3V, but only 3.1V.

I was just wondering if it was not a problem for the 3.3V power inputs.



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Re: 3.3V trail when battery voltage is low?
« Reply #1 on: September 06, 2017, 04:47:09 PM »
Usually the AXP209 takes care of this stuff automatically, you don't have to worry. Maybe check the configuration in the fex file if there is a software way to set battery cutoff thresholds.

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