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LM317S/NOPB 数据表(PDF) 32 Page - Texas Instruments

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部件名 LM317S/NOPB
功能描述  Wide Temperature Three-Pin Adjustable Regulator
PDF  48 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM317S/NOPB 数据表(HTML) 32 Page - Texas Instruments

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LM117, LM317-N
SNVS774P – MAY 2004 – REVISED OCTOBER 2015
www.ti.com
Thermal Considerations (continued)
Table 2.
θJA Different Heatsink Area
LAYOUT
COPPER AREA
THERMAL RESISTANCE
Top Side (in2)(1)
Bottom Side (in2)
(
θJA°C/W) TO-252
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 43.
θJA vs 2-oz. Copper Area for TO-252
Figure 44. Maximum Allowable Power Dissipation vs
Ambient Temperature for TO-252
32
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Copyright © 2004–2015, Texas Instruments Incorporated
Product Folder Links: LM117 LM317-N



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