AN1139 STMicroelectronics, AN1139 Datasheet - Page 47

• Manufacturer Part Number: AN1139
• Description: L6254 - L6268 - L6269 12V DISK DRIVE POWER COMBO IC
• Manufacturer: STMicroelectronics

Figure 31. Raccomended Pattern for SLUG SOLDERING TO PCB
Figure 32. TQFP SLUG design
Figure 33. IC Temperature Increase
Die Thickness : 375 µ +/- 25µ
120
100
80
60
40
20
0
A
0
power
10
Solder plated
Copper Slug
Full Plastic
20
Time (sec)
Slug
Slug Soldered on PCB
Package Sizes
10x10x1.4mm
30
D/A Glue (Thick. = 30 µ)
AN1139 APPLICATION NOTE
40
2.00 mm
53
A
Lead frame
Spot Ag plated
94
72.5
50
6
5
4
3
2
1
0
1.00 mm
B
47/64