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User's Manual

ManualsBrandsTelit Communications ManualsElectronicsLE910-NAG LTE/HSPA/GPRS/GSM module supporting frequency bands GSM/GPRS 850/1900, HSPA FDD II and FDDV and LTE FDD 2, 4, 5 and 17
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LE910 Hardware User Guide
1vv0301089 Rev.7 – 25-10-2015
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 34 of 88
Make sure the low ESR capacitor on the power supply output (usually a tantalum one) is
rated at least 10V.
For Car applications a spike protection diode should be inserted close to the power input, in
order to clean the supply from spikes.
A protection diode should be inserted close to the power input, in order to save the LE910
from power polarity inversion. This can be the same diode as for spike protection.
An example of switching regulator with 12V input is in the below schematic: