Specifications

Telit GM862-PCS/-GPRS/-GSM Product Description

1vv0300604, Rev. ISSUE#14 - 22/01/04

2.8 Supply voltage

The external power supply must be connected to VBATT signal (see paragraph 2.15,Interface

connectors on GM862-GPRS) and must fulfil the following requirements:

• Nominal operating voltage 3.8 V

• Operating voltage range 3.4 V - 4.2 V

2.9 Power consumption

The typical current consumption of the Telit GM862-GPRS module are:

• Power off current (typical) 26 µA;

• Stand–by current < 17 mA

rms

(< 4 mA

rms

using command AT+CFUN )

• Operating current 250 mA

rms

@ typical network conditions

• Operating current 350 mA

rms

1.9 A

peak

@ worst network conditions

2.10 Embodied Battery charger

This feature is available only on the Telit GM862-PCS.

The battery charger is suited for 3.7V Li-Ion rechargeable battery (suggested capacity 500-

1000mAH). The Charger needs only a CURRENT LIMITED power source input and charges the

battery directly through VBATT connector pins.

• Battery charger input pin CHARGE

• Battery pins VBATT, GND

• Battery charger input voltage min 5.0 V

• Battery charger input voltage typ 5.5 V

• Battery charger input voltage max 7.0 V

• Battery charger input current max 400mA

• Battery type Rechargeable Li-Ion

NOTE: If embodied battery charger is used, then a LOW ESR capacitor of at least 100µF must be

mounted in parallel to VBATT GM862-PCS pins.

NOTE: when power is supplied to the CHARGE pin, a battery must always be connected to the

VBATT pins of the GM862-PCS.