Product Info

LTE Standard Module Series
EC21 Hardware Design
EC21_Hardware_Design 83 / 120
6.2. Power Supply Ratings
Table 32: Power Supply Ratings
Parameter Description Conditions Min. Typ. Max. Unit
VBAT
VBAT_BB and
VBAT_RF
The actual input voltages
must be kept between the
minimum and maximum
values.
3.3 3.8 4.3 V
Voltage drop during
burst transmission
Maximum power control
level on EGSM900
400 mV
I
VBAT
Peak supply current
(during transmission
slot)
Maximum power control
level on EGSM900
1.8 2.0 A
USB_VBUS
USB power supply,
used for USB
detection
3.0 5.0 5.25 V
6.3. Operation and Storage Temperatures
The operation and storage temperatures are listed in the following table.
Table 33: Operation and Storage Temperatures
Parameter Min. Typ. Max. Unit
Operation Temperature Range
1)
-35 +25 +75 ºC
Extended Temperature Range
2)
-40 +85 ºC
Storage Temperature Range -40 +90 ºC
1.
1)
Within operation temperature range, the module is 3GPP compliant.
2.
2)
Within extended temperature range, the module remains the ability to establish and maintain a
voice, SMS, data transmission, emergency call* (emergency call is not supported on ThreadX
modules), etc. There is no unrecoverable malfunction. There are also no effects on radio spectrum
NOTES