Quectel SG560D Series - Page 46

Smart Module Series
SG560D_Series_Hardware_Design 45 / 134
Table 8: Pin Definition of Charging Interface
SG560D series module supports battery temperature detection in the condition that the battery integrates
a thermistor (100 kΩ ±1 % NTC thermistor with a B-constant of 4250 kΩ ±1 % by default) and the
thermistor is connected to BAT_THERM. If BAT_THERM is not connected, there will be malfunctions
such as battery charging failure, battery level display error.
Pin Name
Pin No.
I/O
Description
Comment
USB_VBUS
429–432
PIO
USB/charger
insertion detection;
charging power
input;
Power output for
OTG device
The maximum output
current in OTG mode is
1.5 A.
VBAT
1–5
PIO
Power supply for the
module
It must be able to provide
sufficient current up to
5.0 A.
It is suggested to use a
TVS diode for surge
protection.
BAT_P
418
AI
Battery voltage
detect (+)
Must be connected.
BAT_M
419
AI
Battery voltage
detect (-)
BAT_THERM
407
AI
Battery temperature
detect
Internally pulled up.
Supports 100 kΩ NTC
thermistor by default.
Connect it to 100 kΩ NTC
thermistor.
If unused, connect it to
GND with a 100 kΩ resistor.
BAT_ID
410
AI
Battery ID detect
If not used, keep it
unconnected.