N11
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
14
Automatic Shutdown Triggered by Low Voltage
Low voltage of the power supply will trigger automatic shutdown of the module.
The module keeps monitoring the voltage at VBAT. When it is lower than 3.4 V, the module shuts
down automatically.
Power-On/Off Control
Figure 3-7 shows a reference circuit for ON/OFF control with inverted control logic.
Figure 3-7
Reference circuit for power-on/off control
N11 module
ON/OFF
TVS
S 1
Figure 3-8
Reference circuit for power-on/off controlled by high level
R1
4.7k
Ω
N11 module
ON/OFF
R2
47k
Ω
USER_ON
Q1
In Figure 3-8, high level trigger
power-ON state on t
he user side (USER_ON) after level shifting.
R1 and R2 can be adjusted according to the driving capability of the USER_ON pin.
