Power Supply; Decrease Voltage Drop - Quectel SC200L-EM Hardware Design

Pin Name Pin No.
USB_BOOT 46
VIB_DRV_P 28
Reserved Interfaces
Pin Name Pin No.
32、126、127、153、154，155、157、158、159、160、
161、163、164、165、166、169、170、173、174、175、
RESERVED 177、178、179、180、181、182、186、192、193、194、
195、196、197、198、199、200、201、205、232、239、
242、246、254、257、263、264、265、267、270
NOTES
1)
SC200L-WF does not support GNSS.

3.4. Power Supply

3.4.1. Decrease Voltage Drop

SC200L provides two VBAT_RF pins and two VBAT_BB pins for connecting with an external power
supply. The VBAT_RF pins are used for the RF part of the module and the VBAT_BB pins are used for
the baseband part of the module.
3.4.2. Decrease Voltage Drop
The power supply range of the module is 3.50V~4.20V, and the recommended value is 3.80V. The power
supply performance, such as load capacity, voltage ripple, etc. directly influences the module's
performance and stability. Under ultimate conditions, the transient peak current of the module may surge
up to 3A. If the supply voltage is not enough, there will be voltage drops, and if the voltage drops below
3.1V, the module will be turned off automatically. Therefore, please make sure the input voltage will never
drop below 3.1V.
SC200L_Hardware_Design
I/O Description
Force the module to
DI enter emergency
download mode
PO Motor drive
SC200L Hardware Design
DC
Characteristics
V max = 0.48 V
IL
V min = 1.39 V
IH
V = 1.80~3.30 V
O
I max = 100 mA
O
Comment
Pull down
USB_BOOT to GND
will force the module
enter emergency
download mode.
Connected to the
positive terminal of
the motor.
Comment
Keep these pins
open.
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