LiPo charger question

May 25, 2016 3 Replies
B

I have a little LiPo charger module, this one:



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It's based on the following IC:



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There doesn't seem to be any breakout on the dev board provided to give a "power good" signal to a microprocessor when the battery is finished charging.



I'd like the host device to be un-turn-onable while the battery is charging from a USB port, and for the device to shut down when the battery voltage drops below a certain level. What additional circuitry would be required?


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L

Den onsdag den 25. maj 2016 kl. 23.25.10 UTC+2 skrev bitrex:

there's two LEDs on the STAT pin for changing and done

the stat pin is high when done, low when charging and high Z when not powered

-Lasse

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B

Gotcha. So how does this help me?

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A

I'm guessing you use a buffer* to take the signal at the STAT pin of the charging module to the "power good" input on the dev board.

  • inverting or not, depending on what the "power good" needs to see, of course.

Mark L. Fergerson

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