Reducing nRF54L15 Idle Current to 3 µA

RE: Reducing nRF54L15 Idle Current to 3 µA

Sajid_ila — Fri, 05 Dec 2025 05:24:04 GMT

Hi Kenneth,

I observed that the power consumption drops to around 1.5 µA when using the system_off example, but that example completely powers down the system and causes a full restart when an interrupt occurs.

In my case, I need the device to enter a system-on idle state, so that execution continues from where it stopped after waking up—without a restart.
According to the documentation, this system-on idle mode should achieve around 3 µA. Please correct me if I’m misunderstanding anything.

RE: Reducing nRF54L15 Idle Current to 3 µA

Kenneth — Wed, 03 Dec 2025 15:04:00 GMT

Hello,

For comparison you might try the system off example first.

But in general check out the DK description if you haven't already:
https://docs.nordicsemi.com/bundle/ug_nrf54l15_dk/page/UG/nRF54L15_DK/measurements/current_measurements.html

Also yse the board configurator to disable leds, uarts and set the board to 3V (instead of 1.8V), e.g.:

Make sure to set the PPK 2 in source mode.

Kenneth