nPM1100 LEDs

[Pallav Aggarwal]

Hi,

could you please share how charging LED / Error LED will behave in various conditions. I could not find this information anywhere.

BR

Pallav

[ketiljo]

This is explained here: https://infocenter.nordicsemi.com/topic/ps_npm1100/chapters/charger.html#charging_indication and https://infocenter.nordicsemi.com/topic/ps_npm1100/chapters/charger.html#charger_error_cond

[Pallav Aggarwal]

I am talking about how blinking will happen when it will be OFF when it will be ON?

[ketiljo]

The CHG LED is active only when the battery is being charged and the ERR LED is active if there's an error condition. None of these are blinking. You can connect these signals to the host MCU, hence blinking will just make things difficult. 

[Pallav Aggarwal]

After the charging of the battery is completed the charging LED is blinking on my npm1100 evaluation board. See this video.

https://drive.google.com/file/d/1ATLQPX6ChGGR10goviXvLP2WvXfDOKr-/view?usp=sharing

[ketiljo]

It should not do that. Can you try another battery? What it is the battery voltage when the LED is on and off? 

It could be a battery with too high internal resistance such that, it reaches End of Charge, but when charging stop, the battery voltage drop below the Recharge Threshold