User's Manual

6.3 Power supply

The nRF52840 Dongle can be powered from different sources.

6.3.1 Internal regulator

The default power supply of the nRF52840 Dongle is the USB interface. The USB interface

supplies powerto the on-chip high voltage regulator of the nRF52840 SoC.

The output of the regulator supplies the SoC and the LEDs. The USB power connection (VBUS) is

alsoavailable along the board edge. Next to VBUS, there is a connection point for VDD OUT,

which is theoutput of the nRF52840 SoC high voltage regulator. For maximum power draw from

this pad, seenRF52840 Product Specification, and take into account the power draw of the

onboard nRF52840 and theLEDs.

By using the on-chip high voltage regulator, the VDD voltage level can be set in the REGOUT0