User's Manual

LE940B6 Hardware User Guide
1VV0301331 Rev. 1.8 - 2017-03-15
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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.
6.1. Power Supply Requirements
The LE940B6 power requirements are as follows:
Table 20: Power Supply Requirements
Nominal supply voltage 3.8V
Supply voltage range 3.4V – 4.2V
Max ripple on module input supply 30 mV
Table 21 provides typical current consumption values of LE940B6 for the various available modes.
Table 21: 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)