Power Supply; Power Supply Pins; Decrease Voltage Drop - Quectel SC606T Series Hardware Design

GNSS_LNA_
202
EN
GRFC_5 242
GRFC_7 241
S1A 215
S1B 216
S2A 211
S2B 233
Reserved Interface
Pin Name Pin No.
17, 21–29, 153–158, 161, 162, 164–166, 212–214, 217, 218,
RESERVED
222, 235, 239, 240

3.4. Power Supply

3.4.1. Power Supply Pins

The module provides 3 VBAT pins and 2 VPH_PWR pins. VBAT pins are dedicated for connection with
an external power supply. VPH_PWR pins can supply power for peripherals, and they can provide a
maximum continuous current of 1 A approximately. The value of capacitors placed on the VPH_PWR pins
should not exceed 120 μF.

3.4.2. Decrease Voltage Drop

The power supply range of the module is from 3.55 V to 4.4 V, and the recommended value is 3.8 V. The
power supply performance, such as the power supply capacity and voltage ripple, directly influences the
module's performance and stability. Under extreme conditions, the module may have a transient peak
current up to 3 A. If the power supply capacity is not sufficient, there will be the risk that the voltage drops
below 3.1 V and as a result the module powers off automatically. Therefore, it is necessary to ensure that
the input voltage never drops below 3.1 V.
SC606T_Series_Hardware_Design
GNSS LNA enable
DO
control
Generic RF
DIO
controller
Generic RF
DIO
controller
S1A and S1B are
connected in the
module
S2A and S2B are
connected in the
module
I/O Description
SC606T Series Hardware Design
DC Characteristics
Smart Module Series
For test purpose only.
If unused, keep this
pin open.
Only used for RF
tuner control.
Comment
Keep these pins open.
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