Datasheet

LM317L, NCV317LB
http://onsemi.com
9
30
50
70
90
110
130
150
0.4
0.8
1.2
1.6
2.0
2.4
2.8
02030504010
L, LENGTH OF COPPER (mm)
170 3.2
R
θ
JA
P
D
R , THERMAL RESISTANCE
JAθ
JUNCTION-TO-AIR ( C/W)°
, MAXIMUM POWER DISSIPATION (W)
2.0 oz.
Copper
Graph represents symmetrical layout
3.0 mmL
L
Figure 24. SOP-8 Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
P
D(max)
for T
A
= 50°C