Specifications

Product Technical Specification & Customer Design Guidelines
Interfaces
3.13.3 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 divided in three phases:
1.
Constant charge
2.
Beginning of pulse charge
3.
End of pulse charge
The three phases can be seen on the following waveform for full charging:
Figure 28: Li-Ion full-charging waveform
Electrical characteristics of Li-Ion battery timing charge
Parameter Min Typ Max Unit
Step 1 switching Closed Always s
© Confidential
Page: 72 / 116
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WA_DEV_Q64_PTS_001-003 January 9, 2009
Opened 0.1 s Step 2 switching
Closed 1 s
Opened 0.1 3 s Step 3 switching
Closed 1 s