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LM317S/NOPB Datasheet(PDF) 14 Page - Texas Instruments

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Part # LM317S/NOPB
Description  LM117/LM317A/LM317-N 3-Terminal Adjustable Regulator
PDF  38 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM317S/NOPB Datasheet(HTML) 14 Page - Texas Instruments

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LM117, LM317-N
SNVS774L – MAY 2004 – REVISED FEBRUARY 2011
www.ti.com
Table 1.
θJA Different Heatsink Area
Layout
Copper Area
Thermal Resistance
(
θJA°C/W) PFM
Top Side (in2)(1)
Bottom Side (in2)
1
0.0123
0
103
2
0.066
0
87
3
0.3
0
60
4
0.53
0
54
5
0.76
0
52
6
1.0
0
47
7
0.066
0.2
84
8
0.066
0.4
70
9
0.066
0.6
63
10
0.066
0.8
57
11
0.066
1.0
57
12
0.066
0.066
89
13
0.175
0.175
72
14
0.284
0.284
61
15
0.392
0.392
55
16
0.5
0.5
53
(1)
Tab of device attached to topside of copper.
Figure 33.
θJA vs 2oz Copper Area for PFM
Figure 34. Maximum Allowable Power Dissipation vs. Ambient Temperature for PFM
14
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Copyright © 2004–2011, Texas Instruments Incorporated
Product Folder Links: LM117 LM317-N



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