LE910Cx Hardware Design Guide
1VV0301298 Rev.40 Page 54 of 149 2023-03-16
Not Subject to NDA
6. POWER SUPPLY
The power supply circuitry and board layout are very important parts of the full product
design, with a critical impact on the overall performance of the product. Please read the
following requirements and guidelines carefully to ensure a good and proper design.
Power Supply Requirements
The LE910Cx power requirements are as follows:
Power Supply Value
Nominal supply voltage 3.8V
Supply voltage range 3.4V – 4.2V
Max ripple on module input supply 30 mV
Table 19: Power Supply Requirements
Note: For PTCRB approval on the final products, the power supply is
required to be within the range of the “Normal Supply voltage
ranger”.
Power Consumption
Table 20 provides typical current consumption values of LE910Cx for the various available
modes.
Mode Average (Typ.) Mode Description
Switched Off
Switched off 10µA
Module supplied but switched Off
(RTC On)
Idle Mode (Standby Mode; No Call in Progress)
AT+CFUN=1 15.0 mA Module full functionality with power saving disabled
AT+CFUN=4 14.0 mA
Tx and Rx disabled; module is not registered on the network
(Flight mode)
Multi Variant
DRX
AT+CFUN=5
GSM
2.6 mA DRx2
2.1 mA DRx5
WCDMA
2.1 mA DRx7
1.9 mA DRx8
LTE 2.4mA Paging cycle #128 frames (1.28 sec DRx cycle)
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