Nordic nRF5340 User Manual

Hardware description
SB34
SB35
SB36
1
2
P21
Pin List 1x2, Angled
VBAT
VEXT
Q8A
TSM250N02DCQ RFG
R68
1M0
VSUPPLY
VEXT_EN
VREG_EN
VSUPPLY
VREG_EN_INV
R74
1M0
VSUPPLY
Q8B
TSM250N02DCQ RFG
VEXT_EN_INV
VREG
V5V
R65
820k
R66
470k
C68
100nF
VSUPPLY
C69
100nF
VSUPPLY
VREG_EN_INV
SW10
CAS-220TA
VDD VSRC_NRF
GND
VCC
U24
74LVC1G08
GND
VCC
U18
74LVC1G11
GND
VCC
U16
74LVC1G08
VSUPPLY_EN
C70
100nF
VSUPPLY
R73
10M
TP27
TP26
TP29
VDD_nRF_SENSE
SB58
VSUPPLY
VSUPPLY
VBAT_EN
VEXT_EN_INV
VREG_EN_INV
Q10A
PMCPB5530
Q10B
PMCPB5530
R72
1M0
R71
100k
VSUPPLY
VSUPPLY
VEXT_EN_INV
VREG_EN_INV
C71
100nF
VSUPPLY
GND
VCC
U21
74LVC1G11
+
Bat1
Bat Holder CR2032
VIN
A2
VOUT
A1
CTRL
B2
GND
B1
U13
TCK106AG
VIN
A2
VOUT
A1
CTRL
B2
GND
B1
U17
TCK106AG
VIN
A2
VOUT
A1
CTRL
B2
GND
B1
U23
TCK106AG
Figure 9: Power supply circuitry
The internal transistor body diode powers the VSUPPLY net, which is used to supply the gates that control
the enable signal for the power switches. If 5 V is present, the switches for external supply and battery are
disabled. If external supply is present, the switch for the battery is disabled.
The power switches can be bypassed by shorting one or more solder bridges.
4406_638
15

Nordic nRF5340 Specifications

General

Brand	Nordic
Model	nRF5340
Category	Computer Hardware
Language	English