BQ24004 Datasheet, PDF (20/22 Pages) Texas Instruments – TWO-CELL Li-ION CHARGE MANAGEMENT IC FOR PDAs AND INTERNET APPLIANCES

bq24004
bq24005
bq24006
SLUS476B – DECEMBER 2000 – REVISED MAY 2002
THERMAL INFORMATION
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3.5
TA = 25°C
300 ft/min
3
150 ft/min
2.5
3.5
TA = 55°C
3
2.5
300 ft/min
2
2
Natural Convection
150 ft/min
1.5
1.5
Natural Convection
1
1
0.5
0
0
2
4
6
8
0.3
Copper Heat-Sink Size – cm2
(a)
0.5
0
0
2
4
6
8
0.3
Copper Heat-Sink Size – cm2
(b)
3.5
TA = 105°C
3
2.5
2
1.5
150 ft/min
300 ft/min
1
0.5
Natural Convection
0
0
2
4
6
8
0.3
Copper Heat-Sink Size – cm2
(c)
Figure 22. Power Ratings of the PWP Package at Ambient Temperatures of 25°C, 55°C, and 105°C
20