Quectel EC21 Series

LTE Standard Module Series
EC21_Series_Hardware_Design
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5
Electrical Characteristic and
Reliability
5.1. Absolute Maximum Ratings
Absolute maximum ratings for power supply and voltage on digital and analog pins of the module are
listed in the following table.
Table 42: Absolute Maximum Ratings
Parameter Min. Max. Unit
VBAT_RF/VBAT_BB -0.3 4.7 V
USB_VBUS -0.3 5.5 V
Peak Current of VBAT_BB 0 0.8 A
Peak Current of VBAT_RF 0 1.8 A
Voltage at Digital Pins -0.3 2.3 V
Voltage at ADC0 0 VBAT_BB V
Voltage at ADC1 0 VBAT_BB V