Installation Instruction

Ref : SCT TMO MOD SPEC 662
Rev.: B
Ref. sec. :
Date:
18/11/2004
Document
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MO2XX module – Confidential under NDA
Page 17/67
3.8.2 VRIO
+2.8V output is available on external pin of the module and could supply +2.8V external components (current
capability 10mA in active mode).
This interface includes main protections.
3.8.3 Vbackup
External Backup could be supply through the VBACKUP input (from 2.2V to 3.2V). A internal mechanism is present
to charge the backup battery.
If No external Backup is supplied, VBACKUP input has to be connected to VBAT signal.
3.8.4 Charge
This interface manages the charge of the battery for regulated charger, when a charger is connected, even in the
following conditions: deeply discharged battery, short-circuited battery and unconnected battery (600mA with
regulated charger).
The interface manages the charge of some regulated chargers, that have to be qualified by SAGEM (see listing in
application note).
WARNING :
The charger interface must be connected with wide tracks (1 mm width / 17.5um height tracks on the MO2XX ) to
allow 600 mA maximum current from the charger.
When using MO2XX as slave MODEM of a Host system sharing the same power supply (example : PDA), it is
strongly recommended to manage the charging function on Host side: so, in such a case, do not use the charge
function of the module.
3.8.5 This interface includes main protections.AC/DC switching charger
3.8.5.1 Operating temperature
C to +55°C.
3.8.5.2 Electrical ratings
Vs
Is
Vp
Battery charger
Figure 6
Charging.
Class II equipment (EN 60950 § 1-2-4-2)
3.8.5.2.1 Primary input voltage
98V < Vp < 254V
;
F = 50/60Hz.
3.8.5.2.2 Primary/secondary insulation
Security transformer class E (EN 60950 § 5-1)