LED2 is consuming more power than other LEDs

RE: LED2 is consuming more power than other LEDs

Vidar Berg — Thu, 04 Sep 2025 07:26:05 GMT

Hi Harish,

[quote userid="146988" url="~/f/nordic-q-a/124155/led2-is-consuming-more-power-than-other-leds/547715"]These LEDs are inbuilt nRF54L15 LEDs[/quote]

Yes, but they shall be excluded from in the measurement as long as you are measuring on the P6 header.

I see you are using the PPK in source mode and supplying the board with 3v while the onboard supply is 1.8v by default which may explain the leakage. Please follow the setup described here instead: Measure average current with an ampere meter

RE: LED2 is consuming more power than other LEDs

HarishS — Thu, 04 Sep 2025 07:16:55 GMT

Hi Vidar,

In this screenshot, LED3 is used for the connection status, so the power consumption is low (34 uA).

In this screenshot, LED2 is used for the connection status, so the power consumption is high (243 uA).

These LEDs are inbuilt nRF54L15 LEDs,

P2.09	LED 0
P1.10	LED 1
P2.07	LED 2
P1.14	LED 3

So any help would be greatful.

Regards,

Harish

RE: LED2 is consuming more power than other LEDs

Vidar Berg — Thu, 04 Sep 2025 06:31:45 GMT

Hello,

Could you please describe your measurement setup (a picture would also be nice)? The board LEDs are not powered from the same power source as the nRF and should therefore not impact the measurement even if the LEDs are kept on.

Best regards,

Vidar