User's Manual

GE/GC864-QUAD V2 and GE864-GPS Hardware User Guide

1vv0300915 Rev.2 – 2011-06-15

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights

Reserved. Page 36 of 97

6. Power Supply

The power supply circuitry and board layout are a fundamental

part of the product design and they strongly reflect on the

product overall performances, hence read carefully the

following requirements and guidelines for a proper design.

6.1. Power Supply Requirements

Condition Value

Nominal Supply Voltage

3.80 V

Normal operating Voltage

Range

3.40 V -

4.20

Extended operating Voltage

Range

3.22 V –

4.5

TIP:

The supply voltage is directly measured between VBATT and

GND balls. It must stay within the Wide Supply Voltage

tolerant range including any drop voltage and overshoot

voltage (during the slot TX, for example).

NOTE:

The Operating Voltage Range MUST never be exceeded also

in power off condition; care must be taken in order to

fulfill min/max voltage requirement

NOTE:

When the power supply voltage is lower than 3.4V, to turn

ON the module, the pad ON# must be tied low for at least

3 seconds