LM317K

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Price Range $2.9461 / $3.6659

Part Details

Manufacturer Part Number:
LM317K
Brand Name:
STMicroelectronics
Rohs Code:
Yes
Part Life Cycle Code:
Obsolete
Ihs Manufacturer:
STMICROELECTRONICS
Part Package Code:
TO-204AA
Package Description:
TO-3, TO-204/-3
Pin Count:
2
Reach Compliance Code:
not_compliant
ECCN Code:
EAR99
HTS Code:
8542.39.00.01
Manufacturer:
STMicroelectronics
Risk Rank:
5.04
Samacsys Description:
Voltage regulators
Adjustability:
ADJUSTABLE
Input-Output Voltage Differential-Max:
40 V
Input-Output Voltage Differential-Min:
3 V
JESD-30 Code:
O-XBFM-P2
JESD-609 Code:
e3
Line Regulation-Max (%/V):
0.07
Load Regulation-Max(%):
1.5%
Number of Functions:
1
Number of Outputs:
1
Number of Terminals:
3
Operating Temperature TJ-Max:
125 °C
Output Current1-Max:
1.5 A
Output Voltage1-Max:
37 V
Output Voltage1-Min:
1.2 V
Package Body Material:
UNSPECIFIED
Package Code:
TO-3
Package Equivalence Code:
TO-204/-3
Package Shape:
ROUND
Package Style:
FLANGE MOUNT
Packing Method:
TUBE
Peak Reflow Temperature (Cel):
NOT SPECIFIED
Qualification Status:
Not Qualified
Regulator Type:
ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR
Subcategory:
Other Regulators
Surface Mount:
NO
Technology:
BIPOLAR
Terminal Finish:
Matte Tin (Sn)
Terminal Form:
PIN/PEG
Terminal Position:
BOTTOM
Time@Peak Reflow Temperature-Max (s):
NOT SPECIFIED

CAD Models Information

Part Symbol
Footprint

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Part Number	Description	Manufacturer	Compare
LM317AHVT Power Circuits	Linear Voltage Regulator, Positive, Adjustable Output, 1.5 A (60V), 1000-TUBE	ON Semiconductor	LM317K vs LM317AHVT
LM317HVT Power Circuits	Adjustable Positive Standard Regulator, 1.2V Min, 57V Max, BIPolar, PSFM3, TO-220, 3 PIN	Fairchild Semiconductor Corporation	LM317K vs LM317HVT
LM117HVH Power Circuits	Extended Temperature 1.5A Adjustable Output Voltage Regulator / LDO 3-TO -55 to 125	Texas Instruments	LM317K vs LM117HVH
NTE956 Power Circuits	Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, PSFM3, TO-220, 3 PIN	NTE Electronics Inc	LM317K vs NTE956
LM317H Power Circuits	1.5-A, 40-V, adjustable linear voltage regulator 3-TO 0 to 0	Texas Instruments	LM317K vs LM317H
LT317AT#PBF Power Circuits	Positive Adjustable Regulator	Analog Devices Inc	LM317K vs LT317AT#PBF
M38510/11703BXA Power Circuits	Military Grade 1.5A Adjustable Output Linear Regulator / LDO 3-TO -55 to 125	Texas Instruments	LM317K vs M38510/11703BXA
LM317H/NOPB Power Circuits	1.5-A, 40-V, adjustable linear voltage regulator 3-TO 0 to 0	Texas Instruments	LM317K vs LM317H/NOPB
LM317AH/NOPB Power Circuits	1.5-A, 40-V, adjustable linear voltage regulator with high-accuracy 3-TO -40 to 125	Texas Instruments	LM317K vs LM317AH/NOPB
LM317HVT/NOPB Power Circuits	1.5-A, 60-V, adjustable linear voltage regulator 3-TO-220 0 to 125	Texas Instruments	LM317K vs LM317HVT/NOPB

Global Popularity

971,246 of 4,035,221 parts

-0.02% change vs. last year

Top Global Parts
1. 1N4148W-7-F Diodes Incorporated
2. 1N4148WS-7-F Diodes Incorporated
3. MMBT3904LT1G ON Semiconductor
4. 1N4148WS ON Semiconductor
5. VDBBHYPC-XZXXX-1XPTO1 Carling Technologies
6. RC0402FR-0710KL YAGEO Corporation
7. 1N4148WT-7 Diodes Incorporated
8. RC0402FR-0710KL. YAGEO Corporation
9. VD5BSY0C-XZXXX-1-XYPT1 Carling Technologies
10. 2N7002LT1G ON Semiconductor

Popularity in Power Circuits

42,343 of 86,288 parts

-0.03% change vs. last year

Popularity in Linear Regulator ICs

10,967 of 19,214 parts

+0.24% change vs. last year

Top Parts in Linear Regulator ICs
1. L7805CV STMicroelectronics
2. LM1117MPX-3.3/NOPB Texas Instruments
3. LM317T/NOPB Texas Instruments
4. LM317TG ON Semiconductor
5. L7805CV-DG STMicroelectronics
6. LM7805CT/NOPB Texas Instruments
7. LM317DCYR Texas Instruments
8. LM317AEMP/NOPB Texas Instruments
9. LM317T-DG STMicroelectronics
10. LM1117IMPX-3.3/NOPB Texas Instruments

Popularity by Region

Very High

Medium

Good

Low

1. Canada

100
2. Egypt

95
3. Algeria

93
4. Germany

93
5. Moldova

89
6. United Arab Emirates

89
7. Liberia

89
8. Togo

88
9. Uganda

88
10. Hungary

87
11. Puerto Rico

87
12. Pakistan

87
13. India

85
14. Brazil

85
15. Australia

84
16. South Korea

83
17. Lithuania

83
18. Latvia

83
19. Luxembourg

83
20. Indonesia

83
21. Ukraine

83
22. Italy

83
23. United States

83
24. Albania

83
25. Armenia

83
26. New Zealand

83
27. Israel

82
28. Nicaragua

82
29. Switzerland

82
30. Burkina Faso

82
31. Eritrea

82
32. Belgium

81
33. Bolivia

81
34. Chile

81
35. China

81
36. Liechtenstein

81
37. Croatia

81
38. Slovakia

81
39. Bosnia and Herzegovina

81
40. Greece

81
41. Philippines

81
42. Jordan

80
43. Argentina

80
44. France

80
45. Nigeria

80
46. Peru

80
47. Romania

80
48. Russia

80
49. Slovenia

80
50. Venezuela

80
51. Vietnam

80
52. Malta

80
53. Sweden

80
54. Czech Republic

80
55. Malawi

80
56. Nepal

80
57. Kenya

80
58. Azerbaijan

79
59. Tunisia

79
60. Democratic Republic of the Congo

79
61. Jamaica

79
62. Costa Rica

78
63. Turkey

78
64. Austria

78
65. Belarus

78
66. Netherlands

78
67. Norway

78
68. Poland

78
69. Malaysia

78
70. Taiwan

78
71. Spain

78
72. Mexico

77
73. Ethiopia

77
74. Japan

77
75. Singapore

77
76. Colombia

77
77. Kazakhstan

77
78. Morocco

77
79. Portugal

77
80. Saudi Arabia

77
81. Solomon Islands

77
82. Ireland

76
83. Ecuador

76
84. Georgia

76
85. Sri Lanka

76
86. South Africa

76
87. Brunei Darussalam

76
88. Kyrgyzstan

75
89. Estonia

75
90. Finland

75
91. United Kingdom

75
92. Hong Kong

75
93. Serbia

75
94. Dominican Republic

75
95. North Macedonia

75
96. Denmark

75
97. Iraq

75
98. Bangladesh

75
99. Bulgaria

75
100. Myanmar

75
101. El Salvador

75
102. Tanzania

75
103. Uruguay

75
104. Angola

75
105. Honduras

75
106. Saint Kitts and Nevis

75
107. Senegal

75
108. Kuwait

74
109. Mongolia

74
110. Guinea

74
111. Namibia

74
112. Thailand

73
113. Grenada

72
114. Mauritius

72
115. Trinidad and Tobago

72
116. Cameroon

72
117. Paraguay

72
118. Suriname

71
119. Qatar

71
120. Reunion

71
121. CUW

71
122. Panama

71
123. Zambia

70
124. Botswana

70
125. Yemen

69
126. Montenegro

66
127. Rwanda

61
128. Iceland

61
129. Madagascar

38

< 1 - 10 of 129 countries >

Estimated Price History

Sep 2019 - Present Past 6 Months

Estimated Stock History

Datasheets & Reference Designs

LM317K

Rochester Electronics LLC

LM317K

Maxim Integrated Products

LM317K

Unitrode Corp (RETIRED)

LM317K

Unitrode Corporation

LM317K

Freescale Semiconductor

Comset Semiconductor

Texas Instruments

Linear Technology

Inchange Semiconductor Company Ltd

LM317K

TT Electronics Resistors

Frequently Asked Questions (FAQ)

Q: What is an LM317 voltage regulator?
A: LM317 Voltage regulator IC is an adjustable three-terminal voltage regulator IC, with a high output current value of 1.5A. The LM317 IC helps in current limiting, thermal overload protection and safe operating area protection. It can also provide float operation for High voltage application. more
Q: How can I calculate values for LM317 voltage?
A: The output voltage from the LM317 and LM338 is set using two resistors (R1 and R2) with their values chosen according to the following equation... more
Q: What is an Adjustable Voltage Regulator?
A: The LM317T is an adjustable 3-terminal positive voltage regulator capable of supplying different DC voltage outputs other than the fixed voltage power supply of +5 or +12 volts, or as a variable output voltage from a few volts up to some maximum value all with currents of about 1.5 amperes. more
Q: Where can I find an LM317 pinout diagram?
A: Pin Configuration:Pin 1 : Adjust This pins adjusts the output voltage ; Pin 2 : Output Voltage (Vout). The regulated output voltage set by the adjust pin can be obtained from this pin ; Pin 3 : Input Voltage (Vin). The input voltage which has to be regulated is given to this pin more
Q: Where can I find LM317 regulator specifications?
A: The LM317 has three pins: INput, OUTput, and ADJustment. Internally the device has a bandgap voltage reference which produces a stable reference voltage of Vref= 1.25 V followed by a feedback-stabilized amplifier with a relatively high output current capacity. How the adjustment pin is connected determines the output voltage as follows. more
Q: How can I design an LM317 power supply?
A: Lets make a High Current power supply with LM317 Voltage Regulator which can supply upto 5 Amp. LM317 is one of the oldest, most used and wonderful linear voltage regulators. I personally love this IC (yes, it’s not a transistor) a lot, not because it server it purpose well, but because it’s cheap, easy and never disappoints you while making a regulated DC power supply. more
Q: How do I test an LM317?
A: I usually make two tests when I have to test this or other type of regulator IC short circuit test and voltage regulating testing. The best and most effective testing technique to test this IC is out of the PCB. For the pin out of this IC please refer to the exactly IC datasheet what you have to test. In this document, I will use the LM317T regulator and the pin out is usually the same with other LM317 family. more
Q: How do I use an LM317 to regulate voltage?
A: The LM317T Voltage Regulator is an integrated circuit which is very useful in many renewable energyapplications. It can be used to regulate current – for example to regulate the current in a string of LEDs – or it can be used to provide a stable fixed voltage output. more
Q: How do I adjust an LM317's voltage?
A: The calculator allows two ways of calculation: circuit analysisand circuit synthesis. more
Q: How do I design constant current circuits with LM317 regulators?
A: A constant current source (CCS) in electronics is a device/circuit that produces a constant value of current regardless of source voltage or load resistance. A constant current circuit can also be used as a current limiter. more
Q: How do I design a circuit with LM317 voltage regulators to output 3.3 Volts?
A: I created a simple circuit using the LM317 to output 3.3 volts from a 5V or greater input voltage. Here is a handy calculator to calculate the resistance needed to obtain the desired output voltage. I use 545 Ohms (470 + 75) to output the desired 3.3V. more
Q: How do I make an LM317 adjustable voltage regulator?
A: If you are beginner in electronics and you want to have good variable power supply using LM317. This is best project that design for you. It can supply voltage 1.2V to 30V at all range is 1A.This is the First DC power supply in my life that made to use in many projects. It is ideal for those who want to adjust voltage from 1.25V to 30V and currents up to 1A. Which is sufficient for normal use Such as is power supply instead of an one 1.5V AA battery or when you want to listen to music from a 30-watt amplifier that required voltage of 24V 1A, it can be done easily. more
Q: How can I make an LM317 variable power supply?
A: Until now we had discussed about different voltage regulator IC’s including 7805,723 etc but what’s to be noted was that these were all fixed voltage regulators.So now we shall see how design a simple variable voltage regulator using an LM317 IC. more
Q: How do I use an LM317 as a current limiter?
A: LM317 adjustable current limiter more
Q: How do I build a 3.3V regulated voltage supply?
A: Planning to realize an SD Card interface for Arduino, since it requires 3.3V supply, I've realized a simple one based on a general purpouse LM317 Voltage Regulator.In LM317 theory, using 330R (R1) and 545 (R2) one should get 3.31V. Actually, 330R is common, and I've got 545R by adding 470R and 75R in series. more

Part Details

CAD Models Information

Part Symbol

Footprint

Available Download Formats

Global Popularity

Popularity in Power Circuits

Popularity in Linear Regulator ICs

Popularity by Region

Estimated Price History

Estimated Stock History

Datasheets & Reference Designs

Reference Designs

Frequently Asked Questions (FAQ)

Related Parts

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