LM317AMDT National Semiconductor, LM317AMDT Datasheet - Page 11

IC, ADJ LINEAR REG, 1.2V TO 37V, TO252-3

LM317AMDT

Manufacturer Part Number
LM317AMDT
Description
IC, ADJ LINEAR REG, 1.2V TO 37V, TO252-3
Manufacturer
National Semiconductor
Datasheets

Specifications of LM317AMDT

Primary Input Voltage
40V
Dropout Voltage Vdo
2V
No. Of Outputs
1
No. Of Pins
3
Output Current
500mA
Operating Temperature Range
-40°C To +125°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Application Hints
Note: * Tab of device attached to topside of copper.
Layout
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
(Continued)
Top Side (in
0.0123
0.066
0.066
0.066
0.066
0.066
0.066
0.066
0.175
0.284
0.392
0.53
0.76
0.3
1.0
0.5
FIGURE 9. θ
TABLE 1. θ
2
)*
Copper Area
JA
vs 2oz Copper Area for TO-252
JA
Different Heatsink Area
11
Bottom Side (in
0.066
0.175
0.284
0.392
0.2
0.4
0.6
0.8
1.0
0.5
0
0
0
0
0
0
2
00906361
)
Thermal Resistance
JA
˚C/W) TO-252
103
87
60
54
52
47
84
70
63
57
57
89
72
61
55
53
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