ME910G1 HW Design Guide
1VV0301593 Rev.3 Page 33 of 97 2020-03-24
• Make sure the low ESR capacitor on the power supply output 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.
An example of switching regulator with 12V input is in the below schematic:
4.3.1.3. Battery Source Power Supply Design Guidelines
The desired nominal output for the power supply is 3.8V and the maximum voltage
allowed is 4.2V, hence a single 3.7V Li-Ion cell battery type is suited for supplying the
power to the Telit ME910G1 module.
• A Bypass low ESR capacitor of adequate capacity must be provided in order to cut
the current absorption peaks, a 100μF tantalum capacitor is usually suited.
• Make sure the low ESR capacitor (usually a tantalum one) is rated at least 10V.
• A protection diode should be inserted close to the power input, in order to save the
ME910G1 from power polarity inversion. Otherwise the battery connector should be
done in a way to avoid polarity inversions when connecting the battery.
• The battery must be rated to supply peaks of current up to 0.6 A for LTE.
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