ncv8508b ON Semiconductor, ncv8508b Datasheet - Page 12

• Manufacturer Part Number: ncv8508b
• Description: Ncv8508b 5.0 V, 250 Ma Ldo With Watchdog And Reset
• Manufacturer: ON Semiconductor

qJA vs Copper Spreader Area
100
1000
0.1
0.000001
10
0.000001
100
140
120
100
0.1
1
80
60
40
20
10
Figure 20. SOIC 8−Lead EP qJA as a Function of the
0
Pad Copper Area Including Traces, Board Material
1
0
1%
50% Duty Cycle
20%
10%
5%
Single
100
0.00001
0.00001
200
Figure 22. SOIC 8−Lead Thermal Duty Cycle Curves on 1” Spreader Test Board
Cu Area 717 mm
2 oz
COPPER AREA (mm
300
1 oz
0.0001
0.0001
400
Figure 21. SOIC 8−Lead EP Single Pulse Heating Curve
2
, 1 oz Cu
500
2
)
0.001
0.001
600
700
http://onsemi.com
0.01
0.01
800
Time (sec)
Time (sec)
12
0.1
0.1
1
1
10
10
Cu Area 54 mm
Cu Area 717 mm
100
100
2
, 1 oz
2
, 1 oz
1000
1000