LM317AEMP/NOPB National Semiconductor, LM317AEMP/NOPB Datasheet - Page 12

• Manufacturer Part Number: LM317AEMP/NOPB
• Description: IC REG ADJUSTABLE SOT-223
• Manufacturer: National Semiconductor
• Type: Voltage Regulatorr

Specifications of LM317AEMP/NOPB

• Regulator Topology: Positive Adjustable
• Voltage - Output: 1.2 ~ 37 V
• Voltage - Input: 4.2 ~ 40 V
• Number Of Regulators: 1
• Current - Output: 1A
• Current - Limit (min): 1.5A
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-223 (3 leads + Tab), SC-73, TO-261
• Current, Output: 1 A
• Package Type: SOT-223
• Regulation, Line: 0.01 %/V
• Regulation, Load: 0.3 %
• Regulator Type: Positive Voltage Out
• Resistance, Thermal, Junction To Case: 23.5 °C/W
• Temperature, Operating, Range: -40 to +125 °C
• Voltage, Input: 40 V
• Voltage, Noise: 0.003 %
• Voltage, Output: 1.2 to 37 V
• Voltage, Supply, Rejection Ratio: 80 dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device
• Other names: LM317AEMP; LM317AEMPTR

www.national.com
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