STK672-440AN-E Datasheet, PDF (22/26 Pages) ON Semiconductor – 2-phase Stepper Motor Driver

Figure 2
STK672-440AN-E
80
70
60
50
40
30
20
10
0
0
Figure 3
Substrate temperature rise, Tc (no heat sink) - Internal average power dissipation,
PdAV
0.5
1
1.5
2
2.5
3
3.5
Hybrid IC internal average power dissipation, PdAV - W
Heat sink area (Board thickness: 2mm) - c-a
100
No surface finish
10
Surface finished in
black
1
10
100
1000
Heat sink area, S cm2 (thickness : 2mm)
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