the min current in nrf5340 ncs sdk

[pipixia_1_1]

I am using the nRF5340 development board to program the LBS example from the NCS SDK2.7. After system-off, the current is still several tens of microamps, which differs from the expected current of around 1 µA. What is the example with the lowest power consumption that supports Bluetooth functionality in the NCS SDK for the nRF5340, and what is the expected current of the development board after system-off

[tesc]

Hi,

Please note that when the DK is connected to a PC and in Debug Interface mode, the SoC is in Emulated System OFF mode, where a number of resources of the SoC are still enabled and available for debugging. For details, please see the Emulated System OFF mode section of the Power and clock management documentation page.

Typical current consumption by the nRF5340 when in actual System OFF mode depend on wake up source, retained RAM, temperature, etc. It would typically be at around 1 uA at room temperature, but higher at higher temperatures. For specific numbers (including graphs of current consumption v.s. temperature), please refer the Current consumption section of the nRF5340 Product Specification.

Please also make sure you are measuring current consumption of the nRF only, and not by the full board with both interface MCU (also an nRF5340, but running segger software for acting as debugger) as well as LEDs and possibly other components.

Regards,
Terje