User's Manual

LTE Module
EC20 Hardware Design
EC20_Hardware_Design Confidential / Released 56 / 83
6.2. Power Supply Ratings
Table 28: The Module Power Supply Ratings
Parameter
Description
Conditions
Min.
Typ.
Max.
Unit
VBAT
VBAT_BB and
VBAT_RF
Voltage must stay within the
min/max values, including
voltage drop, ripple and
spikes.
3.3
3.8
4.3
V
Voltage drop during
transmitting burst
Maximum power control
level on GSM850 and
EGSM900.
400
mV
I
VBAT
Peak supply current
(during transmission
slot)
Maximum power control
level on GSM850 and
EGSM900.
1.8
2.0
A
USB_VBUS
USB detection
3.0
5.0
5.25
V
6.3. Operating Temperature
The operating temperature is listed in the following table.
Table 29: Operating Temperature
Parameter
Min.
Typ.
Max.
Unit
Normal Temperature
-35
25
75
ºC
Restricted Operation
-40 ~ -35
75 ~ 85
ºC
Storage Temperature
-45
90
ºC
The maximum surface temperature may be up to 100ºC when module works at 85ºC ambient
temperature.
NOTE