Specifications

Wireless CPU
®
Q24 Series
Interfaces
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prior written agreement.
WM_PRJ_Q24NG_PTS_001-004
January 16, 2007
Li-Ion battery and tunable parameters
Parameters Default value Min Max Unit
T1 90 70 90 min
T2 90 60 90 min
T3 5000 100 10000 ms
BattLevelMin 3400 3400 3800 mV
BattLevelMax 4200 4000 5000 mV
DedicatedVoltStart 4000 4000 4199 mV
ChargingCurrent 500 500 800 mA
MaxVoltPulse 4608 4200 4608 mV
TdeltaTemp 3 1 5 mm
Max_Battery_Temp_Volt
2171 (≈3˚C) 1816 (≈14˚C) 2256 (≈ 0˚C)
mV
Max_Battery_Temp_Volt
908 (≈42˚) 831 (≈45˚C) 1233 (≈31˚C)
mV
Li-Ion charging process
Charger connected: CHG_IN =VBATT+0.5V
VBATT
Operating
system
Charging status Switching transistor
(T)
VBATT<2V8
Not
activated
Trickle charge Open
2V8<VBATT<3V2
Not
activated
Pre-charging 50mA typ cross the
switching transistor
3V2<VBATT<BattLevelMin
Activated Fast charging process is
automatically started
Close
Fast charging process
running
Close (<T1) BattLevelMin<VBATT
VBATT< BattLevelMax
Activated
Charging process not
activated
VBATT is monitored
periodically (T3)
Deactivated Trickle charge Open
>=BattLevelMax
Activated If after “n” periods
(1<n<100) of charge
(nx0.1s), the VBATT
voltage is measured
higher than
“BattLevelMax”, the
battery charge is stopped.
Open: Timing
increases regularly
from 0.1s to 10s
Close: 1s
Open and close being
periodical