LM317T Texas Instruments Integrated Circuit (Transistor Outline, Vertical) In Stock
LM317T is a 3-terminal adjustable positive linear voltage regulator from Texas Instruments, delivering 1.5A output current with output voltage adjustable from 1.2V to 37V and up to 40V input. Available from $0.189 in TO-220-3 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- LM317T Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1890(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM317T?
- Adjustable output voltage from 1.2V to 37V with just two external resistors
- 1.5A continuous output current capability in TO-220-3 package
- Input voltage range up to 40V with 2.25V typical dropout voltage
- Built-in current limiting, thermal overload, and safe-area protection
- Industry-standard pinout with over 35 years of proven reliability
What is LM317T used for?
The LM317T is widely used in bench power supplies, battery chargers, and post-regulation stages where a stable, adjustable output voltage is required. It suits consumer electronics, industrial control boards, and LED driver circuits needing 1.2V–37V rails at up to 1.5A. Its simple two-resistor programming network makes it ideal for prototyping and cost-sensitive designs that demand reliable linear regulation.
What are the specifications of LM317T?
| Pbfree Code | Yes |
| Date Of Intro | 1989-01-01 |
| YTEOL | 0 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Nom | 2.25V |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 3V |
| Input-Output Voltage Differential-Max | 40V |
| Input-Output Voltage Differential-Min | 3V |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e0 |
| Line Regulation-Max (%/V) | 0.07 |
| Load Regulation-Max(%) | 1.5% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 37V |
| Output Voltage1-Min | 1.2V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| 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 |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Voltage Tolerance-Max | 5% |
| ## LM317T Alternates Showing results | Image |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM317T datasheet?
LM317T Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM317T?
Compatible alternatives and drop-in replacements for LM317T:
Regulator, 1.2V Min, 37V Max, BIPolar, PSFM3
suggested
suggested
suggested
Adjustable Positive Standard Regulator, 1.25V Min, 37V Max, BIPolar, PSSO3
Adjustable Positive Standard Regulator, 1.25V Min, 37V Max, BIPolar, PSFM3
Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSFM3
Frequently Asked Questions
What is the output voltage range of the LM317T?
The LM317T provides an adjustable output voltage from 1.2V to 37V, set by two external resistors connected between the ADJ and OUTPUT pins. This wide range makes it suitable for a broad variety of regulated power supply designs.
How much output current can the LM317T supply?
The LM317T is rated for up to 1.5A continuous output current in its TO-220-3 package. With proper heatsinking and adequate input-output voltage differential, it can maintain stable regulation across the full 1.5A load range.
What is the maximum input voltage for the LM317T?
The LM317T accepts a maximum input voltage of 40V. The minimum input-to-output differential required for proper regulation is 3V (dropout), and the maximum differential is 40V, so the output must be set accordingly to avoid exceeding device limits.
What package does the LM317T come in and what are common alternatives?
The LM317T uses the standard TO-220-3 through-hole package, making it easy to mount on heatsinks. Functionally equivalent alternatives include the LM317L (TO-92, 100mA), LM317HV (higher input voltage), and LM1117 series for lower dropout applications.
Related Guides
150141RS73100 Red LED Indicator and Current-Resistor Design Guide
Design a reliable 150141RS73100 red LED indicator with worst-case resistor sizing, GPIO checks, PWM drive, layout, and production validation.
Jul 11, 2026
742792651 Ferrite Bead EMI Filter and Power Integrity Design Guide
Practical guidance for using 742792651 in ferrite-bead EMI filters, including bias, DCR, damping, layout, and validation.
Jul 11, 2026
How to Choose a Ferrite Bead for EMI Suppression Rails: Selection Guide
Compare 742792651 and related ferrite beads by impedance, current rating, DCR, package, layout, and EMI test context.
Jul 10, 2026
150141BS73100 Design Guide for 3528 Status Indicator LED Circuits
Design 3528 status indicator LED circuits with 150141BS73100: current setting, resistor sizing, polarity, optics, and sourcing checks.
Jul 10, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2281 | $0.23 |
| 10+ | $0.2047 | $2.05 |
| 16+ | $0.2010 | $3.22 |
| 125+ | $0.1920 | $24.00 |
| 150+ | $0.1910 | $28.65 |
| 300+ | $0.1890 | $56.70 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit