Users Manual

ME910C1 HW User Guide
1VV0301351 Rev.13 Page 31 of 106 2020-06-30
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 ME910C1 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
ME910C1 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.