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LM317K by:

1.2 V to 37 V adjustable voltage regulators

Part Details for LM317K by STMicroelectronics

Results Overview of LM317K by STMicroelectronics

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LM317K Information

LM317K by STMicroelectronics is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Price & Stock for LM317K

Part # Distributor Description Stock Price Buy
DISTI # 56P8113
Newark Dc-Dc Converter, 2-To-3, Output Type:Adjustable, No. Of Outputs:1Outputs, Output Voltage - Nom:-, Output Voltage Min:1.2V, Output Voltage Max:37V, Input Voltage Min:-, Input Voltage Max:40V, Product Range:-, Max Output Current:1.5A Rohs Compliant: Yes |Stmicroelectronics LM317K RoHS: Compliant Min Qty: 500 Package Multiple: 1 Date Code: 0 Container: Bulk 0
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Bristol Electronics   20
RFQ
Chip 1 Exchange INSTOCK 10
RFQ

Part Details for LM317K

LM317K CAD Models

LM317K Part Data Attributes

LM317K STMicroelectronics
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LM317K STMicroelectronics 1.2 V to 37 V adjustable voltage regulators
Rohs Code Yes
Part Life Cycle Code Obsolete
Ihs Manufacturer STMICROELECTRONICS
Part Package Code TO-204AA
Package Description ROHS COMPLIANT, TO-3, 2 PIN
Pin Count 2
Reach Compliance Code not_compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer STMicroelectronics
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
Operating Temperature TJ-Min
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
Qualification Status Not Qualified
Regulator Type ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR
Surface Mount NO
Technology BIPOLAR
Terminal Finish MATTE TIN
Terminal Form PIN/PEG
Terminal Position BOTTOM

Alternate Parts for LM317K

This table gives cross-reference parts and alternative options found for LM317K. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM317K, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LM117AK TT Electronics Resistors Check for Price Adjustable Positive Standard Regulator, 1.25V Min, 40V Max, MBFM2, TO-3, 2 PIN LM317K vs LM117AK
LM117AKR1 TT Electronics Resistors Check for Price Adjustable Positive Standard Regulator, 1.25V Min, 40V Max, MBFM2, TO-3, 2 PIN LM317K vs LM117AKR1
IP317KR1 TT Electronics Resistors Check for Price Adjustable Positive Standard Regulator, 1.25V Min, 40V Max, MBFM2, TO-3, 2 PIN LM317K vs IP317KR1
LM317KSTEEL/NOPB Texas Instruments Check for Price 1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, MBFM2, GREEN, METAL CAN, TO-3, 2 PIN LM317K vs LM317KSTEEL/NOPB
LM117AK-883B TT Electronics Power and Hybrid / Semelab Limited Check for Price 1.25 V-40V ADJUSTABLE POSITIVE REGULATOR, MBFM2, TO-3, 2 PIN LM317K vs LM117AK-883B
IP317AK TT Electronics Power and Hybrid / Semelab Limited Check for Price 1.25 V-40V ADJUSTABLE POSITIVE REGULATOR, MBFM2, TO-3, 2 PIN LM317K vs IP317AK
LM317K Unitrode Corp (RETIRED) Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, MBFM2, TO-3 LM317K vs LM317K
IP317AKR1 TT Electronics Resistors Check for Price Adjustable Positive Standard Regulator, 1.25V Min, 40V Max, MBFM2, TO-3, 2 PIN LM317K vs IP317AKR1
LM317 Semtech Corporation Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, MBFM2, TO-3, 2 PIN LM317K vs LM317
LM317K/883 Texas Instruments Check for Price 1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 2 PIN LM317K vs LM317K/883
Part Number Manufacturer Composite Price Description Compare
7703405XA Microchip Technology Inc Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, MBCY3 LM317K vs 7703405XA
LM317H Texas Instruments $10.3874 1.5-A, 40-V, adjustable linear voltage regulator 3-TO 0 to 0 LM317K vs LM317H
LM117AHVSMD1 TT Electronics Resistors Check for Price Adjustable Positive Standard Regulator, 1.25V Min, 60V Max, CBCC3, CERAMIC, SMD-1, 3 PIN LM317K vs LM117AHVSMD1
LM117-220M-QR-EBCR1 TT Electronics Power and Hybrid / Semelab Limited Check for Price ADJUSTABLE POSITIVE REGULATOR, PSFM3, METAL, TO-220, 3 PIN LM317K vs LM117-220M-QR-EBCR1
5962R7703402MUX Omnirel Corp Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 1.3V Max, TO-257, 3 PIN LM317K vs 5962R7703402MUX
UC150K Unitrode Corporation Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 33V Max, BIPolar, MBFM2, TO-3 LM317K vs UC150K
LM117AHVK TT Electronics Power and Hybrid / Semelab Limited Check for Price 1.25 V-60V ADJUSTABLE POSITIVE REGULATOR, MBFM2, TO-3, 2 PIN LM317K vs LM117AHVK
LM317AK Texas Instruments Check for Price 1.2 V-25V ADJUSTABLE POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 2 PIN LM317K vs LM317AK
LM317HVT Fairchild Semiconductor Corporation Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 57V Max, BIPolar, PSFM3, TO-220, 3 PIN LM317K vs LM317HVT
LM117.TO66R1 TT Electronics Power and Hybrid / Semelab Limited Check for Price ADJUSTABLE POSITIVE REGULATOR, MBFM2, TO-66, 3 PIN LM317K vs LM117.TO66R1

LM317K Related Parts

LM317K Frequently Asked Questions (FAQ)

  • The minimum input voltage required for the LM317K to operate is 3V above the output voltage. For example, if the output voltage is 5V, the minimum input voltage would be 8V.

  • To ensure stability and prevent oscillations, a minimum output capacitance of 1uF is recommended. Additionally, the input capacitor should be at least 10uF to prevent oscillations.

  • The maximum current that the LM317K can deliver is 1.5A. However, it's recommended to derate the current to 1A or less to ensure reliable operation.

  • No, the LM317K is designed to regulate positive voltages only. If you need a negative voltage regulator, you should consider using a different IC, such as the LM337.

  • The output voltage of the LM317K can be adjusted by using a resistive divider network between the output and the adjust pin. The output voltage is determined by the ratio of the resistors and the reference voltage (1.25V).

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