NPM1100 LED Connection

RE: NPM1100 LED Connection

DougMortime — Sat, 14 Jan 2023 13:07:49 GMT

Appreciate the feedback.

RE: NPM1100 LED Connection

Kazi Afroza Sultana — Fri, 13 Jan 2023 12:49:41 GMT

Hello,

Sorry I have not noticed this line ''According to this the CHG and ERR sink 5 mA which for my LED is fine''.

For your design you do not need a current limiting resistor as the led can tolerate 5 mA current.

RE: NPM1100 LED Connection

DougMortime — Tue, 10 Jan 2023 16:34:38 GMT

From my interpretation of the reference manual the pins sink a fixed 5mA and by placing a resistor it would reduce this further which would make the led even less bright.

RE: NPM1100 LED Connection

Kazi Afroza Sultana — Tue, 10 Jan 2023 16:09:23 GMT

Hello,

You can add any current limiting resistor. It should be ok.

Thanks.

Best Regards,

Kazi Afroza Sultana

RE: NPM1100 LED Connection

DougMortime — Mon, 09 Jan 2023 14:53:39 GMT

I should add that I understand that VSYS is regulated to 5V when VBUS is connected otherwise its the VBAT.