User's Manual

GE865 Hardware User Guide
1vv0300799 Rev.11 13-07-2010
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 33 of 82
A protection diode should be inserted close to the power input, in order to save the
GE865 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 (split in 2
parts):