LE940B6 HW User Guide
Rev. 2.02
Page 57 of 111
2020-01-10
6.
Power Supply
The power supply circuitry and board layout are very important parts of the full product
design, with critical impact on the overall product performance. Read the following
requirements and guidelines carefully to ensure a good and proper design.
Power Supply Requirements
The LE940B6 power requirements are as follows:
Table 19: Power Supply Requirements
Nominal supply voltage
3.8V
Supply voltage range
3.4V
– 4.2V
Max ripple on module input supply
30 mV
Table 20 provides typical current consumption values of LE940B6 for the various available
modes.
Table 20: LE940B6 Current Consumption
Mode
Average
(Typ.)
Mode Description
Switched Off
Switched off
0.1 mA
Module supplied but switched Off
Idle Mode (Standby Mode; No Call in Progress)
AT+CFUN=4
2.5 mA
Tx and Rx disabled; module is not registered on
the network (Flight mode)
DRx
GSM
4.7 mA
DRx5
WCDMA
4.7 mA
DRx6
3.6 mA
DRx7
3.1 mA
DRx8
2.8 mA
DRx9
LTE
7.7 mA
Paging cycle #32 frames (0.32 sec DRx cycle)
5.1 mA
Paging cycle #64 frames (0.64 sec DRx cycle)
3.8 mA
Paging cycle #128 frames (1.28 sec DRx cycle)
3.2 mA
Paging cycle #256 frames (2.56 sec DRx cycle)
Provided
to
Dekra
under
NDA
Distribution
is
Prohibited
except
for
Dekra
employees
with
a Need
to
know