Users Manual

8
RA
K20
11
RAK3401
8
VDD_NRF
MCU power supply
-0.3
-
3.9
V
VBUS
USB supply voltage
-0.3
-
5.8
V
VBAT_NRF
MCU high voltage
power supply
-0.3
-
5.8
V
ESD HBM
Human Body Model
-
-
2000
V
ESD CDM
Charged Device
Model
-
-
500
V
2.7 Recommended operating conditions
Table shows the recommended operating conditions of RAK3400.
Table 3: Recommended operating conditions
Symbol
Description
Min.
Nom.
Max.
Unit
VDD_NRF
NRF52840 power supply
2.0
3.3
3.6
V
VBUS
VBUS USB supply voltage
4.35
5.0
5.5
V
VBAT_NRF
NRF52840 high voltage power
supply
2.5
-
5.5
V
3 Mechanical Dimensions
Figure 9 shows the physical dimension of the RAK3401 module.
Figure 9: Mechanical Dimensions