CAT6500 Datasheet, PDF (12/13 Pages) ON Semiconductor – 3.0 A Power Selector Switch

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64
62
60
58
56
54
52
0
CAT6500
2.5
135 mW
2.0
110 mW
1.5
1.0
85 mW
0.5
0
0
1
2
3
4
SWITCH CURRENT (A)
Figure 19. Power Dissipation vs. Switch Current and
Resistance
Power curve with PCB cu thk 2.0 oz
Power curve with PCB cu thk 1.0 oz
q_JA curve with PCB cu thk (no vias) 1.0 oz
q_JA curve with PCB cu thk (no vias) 2.0 oz
100
200
300
400
500
600
Copper Heat Spreader Area (mm²)
Figure 20. q_JA vs. Copper Heat Spreader Area
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
700
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