Power Supply; Power Supply Pins; Voltage Stability Requirements - Quectel EC200U Series Hardware Design

3.6. Power Supply

3.6.1. Power Supply Pins

The module provides four VBAT pins for connection with the external power supply. There are two
separate voltage domains for VBAT.
⚫ Two VBAT_RF pins for module's RF part.
⚫ Two VBAT_BB pins for module's baseband part and RF part.
Table 9: VBAT and GND Pins
Pin Name Pin No.
VBAT_RF 57, 58
VBAT_BB 59, 60
8, 9, 19, 22, 36, 46, 48, 50
GND

3.6.2. Voltage Stability Requirements

The power supply range of the module is from 3.3 V to 4.3 V. Please make sure that the input voltage will
never drop below 3.3 V. The following figure shows the voltage drop during burst transmission in 2G
network. The voltage drop will be less in 4G networks.
VBAT
Figure 7: Power Supply Limits during Burst Transmission
EC200U_Series_Hardware_Design
Description
Power supply for module's
RF part
Power supply for module's
baseband part and RF part
–
54, 56, 72, 76, 85
Burst
Transmission
Drop
LTE Standard Module Series
Min. Typ.
3.3 3.8
3.3 3.8
–
112
Burst
Transmission
Max. Unit
4.3 V
4.3 V
Ripple
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