The nRF54L15 SoC can be powered directly from an external power source with the rest of the nRF54L15 DK being powered through the J3 USB connector. This enables external supply for the nRF54L15 SoC while serial interfaces, LEDs, and buttons remain functional.
Remove the jumper from P6 and connect an external power source to it. The allowed voltage range is from 1.8 V to 3.6 V.
Ensure that the nRF54L15 DK is powered through J3 before powering on the nRF54L15 SoC through the P6 external supply header to avoid damaging the onboard circuitry.
Figure 1. Direct VDD:nRF supply
