Hardware description
Figure 6: Power supply options (front)
Figure 7: Power supply options (back)
4.3.1 5 V power sources
The nRF5340 DK has a 5 V boost regulator.
It gives a stable 5 V output from the following sources:
• USB connector J2 for the interface MCU
• USB connector J3 for the nRF5340 SoC
• Li-Poly battery connectors (J6 or P27)
• VIN 3–5V pin on P20
Each source has a reverse protection diode to prevent current flowing in the wrong direction if multiple
sources are connected at the same time.
D5
NSR0620P2T5G
D3
NSR0620P2T5G
VLi-Ion
VBUS
VBUS_nRF'
D6
NSR0620P2T5G
D7
NSR0620P2T5G
VIN3-5V
VBOOST_SRC'
V5V
C59
10µF
VBOOST_SRC
TP36
BAT
1
CE
3
LX
5
GND
2
Vout
6
GND
4
PAD
7
U10
XC9148
L7
4.7µH
C57
10µF
C58
10µF
Not mounted
C60
10µF
Figure 8: 5 V regulator and protecting diodes
4406_638
13
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