Current Consumption in nRF54L10 System-on Mode (130µA vs 2.6µA)

[Karr]

Hello,

I am currently optimizing the power consumption of an nRF54L10-based project.

While I know that system-off mode is the most efficient, my current implementation requires system-on mode. However, I am finding that the idle current is around 130µA, significantly higher than the 2.6µA ​​specified in the datasheet.

Here is what I have verified so far:

I called the k_sleep() function to enter system-on-ilde mode. I tested with a modified Blinky example and my own project; both showed approximately 130µA.

I have confirmed that the J-Link/debugger was physically disconnected during the measurement to avoid any debug interface current overhead.

All peripherals have been disabled, and I have ensured that all external components controlled by GPIOs are powered down and that pins are not in a state that would cause leakage.

Despite these measures, the current is still stuck at 130µA. It seems the SoC isn't reaching its minimum idle state in system-on mode.

Are there any specific nRF54L series configurations (e.g., RAM hold settings or specific clock gates) that need to be checked to achieve the 2.6µA ​​target?

Thanks in advance!3441.blinky.zip

[Simon D-M]

Hi,

I just tried your sample on a nRF54L15 DK and the chip itself draws only 6uA.

My guess is that, it is not the nRF54L10 that actually draws most of the 130uA.

Can you please show me a schematic of how you are measuring the current, and what components are after your current probe? (If you want to share some confidential information, just ask me to convert this ticket to private before sending the files)

Best regards,

Simon D-M