Q2686H WAVECOM, Q2686H Datasheet - Page 50

• Manufacturer Part Number: Q2686H
• Description: MODULE, GSM/GPRS, QUAD BAND
• Manufacturer: WAVECOM

Specifications of Q2686H

• Mcu Supported Families: ARM9
• Kit Features: GSM/GPRS Class 10 Quad Band Version, 32MB Of Bursted Flash Memory, 8MB Of SRAM
• Tool / Board Applications: Wireless Communication
• Development Tool Type: CPU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.13.2 Li-Ion Charging Algorithm
The Li-Ion algorithm provides battery temperature monitoring, which is highly
recommended to prevent battery damage during the charging phase.
The Li-Ion charger algorithm can be broken down into three phases:
The three phases can be seen on the following waveform for full charging:
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WM_PRJ_Q2686_PTS_001-007
Step 1 switching
Step 2 switching
Step 3 switching
1. Constant charge
2. Beginning of pulse charge
3. End of pulse charge
Parameter
Electrical characteristics of Li-Ion battery timing charge
confidential ©
Figure 6: Li-Ion full-charging waveform
Closed
Closed
Closed
Open
Open
Min
0.1
Always
Typ
0.1
1
1
Q2686 Wireless CPU
Max
3
Interfaces
Unit
March 6, 2007
s
s
s
s
s
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