LM317MDTX/NOPB National Semiconductor, LM317MDTX/NOPB Datasheet - Page 12

• Manufacturer Part Number: LM317MDTX/NOPB
• Description: IC REG 3TERM ADJ TO-252
• Manufacturer: National Semiconductor

Specifications of LM317MDTX/NOPB

• Regulator Topology: Positive Adjustable
• Voltage - Output: 1.2 ~ 37 V
• Voltage - Input: 4.2 ~ 40 V
• Number Of Regulators: 1
• Current - Output: 500mA
• Current - Limit (min): 500mA
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-252-2, DPak (2 Leads + Tab), TO-252AA, SC-63
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Other names: *LM317MDTX; *LM317MDTX/NOPB; LM317MDTX

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Note: * Tab of device attached to topside of copper.
Layout
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
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
12
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
)
906361
Thermal Resistance
(θ
JA
°C/W) TO-252
103
87
60
54
52
47
84
70
63
57
57
89
72
61
55
53