nRF52840 DK v1.0.0

5 V power sources

The nRF52840 Development Kit (DK) board has a 5 V boost regulator.

It gives a stable 5 V output from four possible sources:

Each of these sources has a reverse protection diode to prevent current flowing in the wrong direction if multiple sources are connected at the same time.

Figure 1. 5V regulator and protecting diodes
Schematic: 5 V regulator and protecting diodes