L6228 STMicroelectronics, L6228 Datasheet - Page 22

• Manufacturer Part Number: L6228
• Description: DMOS DRIVER FOR BIPOLAR STEPPER MOTOR
• Manufacturer: STMicroelectronics

L6228
Figure 28. PowerSO36 Junction-Ambient Thermal Resistance versus On-Board Copper Area.
Figure 29. PowerDIP24 Junction-Ambient Thermal Resistance versus On-Board Copper Area.
Figure 30. SO24 Junction-Ambient Thermal Resistance versus On-Board Copper Area.
Figure 31. Mounting the PowerSO Package.
22/26
º C / W
ºC / W
ºC / W
49
48
47
46
45
44
43
42
41
40
39
43
38
33
28
23
18
13
68
66
64
62
60
58
56
54
52
50
48
1
1
1
2
2
2
3
3
3
dissipating area
Slug soldered
to PCB with
4
4
4
5
5
5
6
s q . c m
s q . cm
s q. cm
6
6
7
W ith o ut G ro u nd La yer
W ith Gro un d La yer
W ith Gro un d La yer+ 16 via
H o le s
C o pp er A re a is o n T op S id e
7
7
8
C o p pe r Are a is o n Bo tto m
S id e
C o p pe r Are a is o n To p S i de
8
8
9
9
9
10
10
10
plus ground layer
1 1
dissipating area
Slug soldered
to PCB with
11
11
1 2
12
12
13
dissipating area plus ground layer
contacted through via holes
On-Board Copper Area
Slug soldered to PCB with
On-Board Copper Area
On-Board Copper Area