clear gifLM317, Status:ACTIVE
3/4 Pin 1.5A Adjustable Positive Voltage Regulator
 
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See Also:
LM317LThe LM317L is very similar to the LM317 but LM317L has and output current of 100 mA.
LM317MThe LM317M is very similar to the LM317 but LM317M has an output current of 500 mA.
TL317The TL317 has a low voltage dropout.
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Product Features and DescriptionFeaturesRequest Free SamplesSamplesTechnical Documents: app notes, user guides, models, and product bulletinsTechnical Documents
Quality: Product Contents, MTBF/FIT Rate and Moisture SensitivityQuality & Pb-Free DataPrice and Packaging InformationPricing/PackagingDownload Application NotesApplication Notes
related productsRelated ProductsInventory, Leadtime, and AvailabilityInventoryModels: BSDL, IBIS, or SPICESimulation Models
Tools & Software: EVMs, CCStudio, and developerTools & SoftwareDownload CAD Design ToolsSymbols/FootprintsAccess Reference DesignsReference Designs

 Datasheet
Download Datasheet
3-Terminal Adjustable Regulator (Rev. U) (lm317.pdf, 885 KB)
04 Apr 2008 Download

LM317LM317L LM317M 
Vout(Min)(V)1.25  1.2  1.25  
Vout(Max)(V)37  32  37  
Iout(Max)(A)1.5  0.1  0.5  
Vdo(Max)(V)3  2.5  3  
Vin(Min)(V)4.2  3.7  4.2  
Vin(Max)(V)40  38  40  
Pin/Package2PFM,3DDPAK/TO-263,3TO-220,4SOT-223  3SOT-89,3TO-92,8SOIC,8TSSOP  3PFM,4SOT-223  
Approx. Price (US$) 0.36 | 1ku   0.14 | 1ku   0.36 | 1ku  
 SamplesSamplesSamples
 InventoryInventoryInventory

Product Information
Back to TopFeatures
  • Output Voltage Range Adjustable From 1.25 V to 37 V
  • Output Current Greater Than 1.5 A
  • Internal Short-Circuit Current Limiting
  • Thermal Overload Protection
  • Output Safe-Area Compensation

PowerFLEX, PowerPAD are trademarks of Texas Instruments.

DESCRIPTION/ORDERING INFORMATION

The LM317 is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Furthermore, both line and load regulation are better than standard fixed regulators.

In addition to having higher performance than fixed regulators, this device includes on-chip current limiting, thermal overload protection, and safe operating-area protection. All overload protection remains fully functional, even if the ADJUST terminal is disconnected.

The LM317 is versatile in its applications, including uses in programmable output regulation and local on-card regulation. Or, by connecting a fixed resistor between the ADJUST and OUTPUT terminals, the LM317 can function as a precision current regulator. An optional output capacitor can be added to improve transient response. The ADJUST terminal can be bypassed to achieve very high ripple-rejection ratios, which are difficult to achieve with standard three-terminal regulators.

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Pricing/Packaging/CAD Design Tools/Samples
Back to TopPricePackagingCAD Design ToolsSamples
DeviceStatusReplaced ByTemp (oC)Budget Price
($US) | QTY
Industry Standard
(TI Pkg)
| Pins
Top Side MarkingStandard Pack Quantity | Package CarrierSymbolsFootprintsSamples
LM317DCYACTIVE 0 to 1250.36 | 1kuSOT-223 (DCY) | 4 View 80 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317DCYG3ACTIVE 0 to 1250.36 | 1kuSOT-223 (DCY) | 4 View 80 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317DCYRACTIVE 0 to 1250.36 | 1kuSOT-223 (DCY) | 4 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317DCYRG3ACTIVE 0 to 1250.36 | 1kuSOT-223 (DCY) | 4 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317KCOBSOLETELM317KCS0 to 1250.45 | 1kuTO-220 (KC) | 3 View   Download CAD Format for this Symbol Download CAD Format for this FootprintReplaced by LM317KCS
LM317KCE3OBSOLETE 0 to 1250.45 | 1kuTO-220 (KC) | 3 View   Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
LM317KCSACTIVE 0 to 1250.38 | 1kuTO-220 (KCS) | 3  50 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317KCSE3ACTIVE 0 to 1250.38 | 1kuTO-220 (KCS) | 3  50 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317KTEROBSOLETE 0 to 1250.49 | 1ku(KTE) | 3    Download CAD Format for this Symbol Not Available
LM317KTTRACTIVE 0 to 1250.36 | 1kuDDPAK/TO-263 (KTT) | 3 View 500 | LARGE T&R  Request Free Samples
LM317KTTRG3ACTIVE 0 to 1250.36 | 1kuDDPAK/TO-263 (KTT) | 3 View 500 | LARGE T&R  Request Free Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory
Back to TopTI Inventory StatusReported Distributor Inventory
LM317DCYAs of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 1200* >10k | 2 Sep 4 Weeks AmericasAvnet 290 Buy Now
  Newark >1k Buy Now
  Rochester Electronics >1k Buy Now
  EuropeAbacus Polar >1k Buy Now
LM317DCYG3As of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 1200* >10k | 2 Sep 4 Weeks AmericasAvnet 780 Buy Now
  Rochester Electronics >1k Buy Now
  EuropeEBV Elektronik 880 Buy Now
LM317DCYRAs of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 18 Aug 4 Weeks AmericasArrow >1k Buy Now
  Avnet >1k Buy Now
  DigiKey >1k Buy Now
  Mouser Electronics >1k Buy Now
  AsiaWPI >1k Buy Now
  EuropeArrow Southern Europe >1k Buy Now
LM317DCYRG3As of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 18 Aug 4 Weeks AmericasArrow >1k Buy Now
  Mouser Electronics >1k Buy Now
  EuropeSpoerle >1k Buy Now
LM317KCAs of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0*  Call**AmericasRochester Electronics >1k Buy Now
  EuropeSpoerle >1k Buy Now
LM317KCSAs of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 2 Sep 6 Weeks AmericasDigiKey >1k Buy Now
  Mouser Electronics >1k Buy Now
  Rochester Electronics >1k Buy Now
  EuropeSpoerle 200 Buy Now
LM317KCSE3As of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 2 Sep 6 Weeks AmericasDigiKey >1k Buy Now
  Mouser Electronics >1k Buy Now
LM317KTERAs of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0*  Call**AmericasRochester Electronics >1k Buy Now
  AsiaWPI >1k Buy Now
LM317KTTRAs of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 22 Aug 4 Weeks AmericasMouser Electronics 50 Buy Now
  Newark >1k Buy Now
  AsiaWPI 199 Buy Now
LM317KTTRG3As of 9:55 AM GMT, 25 Jul 2008As of 9:55 AM GMT, 25 Jul 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 22 Aug 4 Weeks AmericasMouser Electronics >1k Buy Now
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* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information. 

Quality & Lead (Pb)-Free Data
Back to TopProduct ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
LM317DCY RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
LM317DCYG3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
LM317DCYR RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
LM317DCYRG3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
LM317KCS RoHS Compliant Pb-Free (RoHS) CU SN N/A for Pkg TypeViewView
LM317KCSE3 RoHS Compliant Pb-Free (RoHS) CU SN N/A for Pkg TypeViewView
LM317KTTR RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HRViewView
LM317KTTRG3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HRViewView
* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details. If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.


Technical Documents
Back to TopDatasheets
3-Terminal Adjustable Regulator (Rev. U) (lm317.pdf, 885 KB)
04 Apr 2008 Download
Back to TopApplication Notes
View Application Notes for Standard Voltage Regulators
Back to TopUser Guides
DV2002L2/TL2 Fast Charge Development System Control of LM317 Linear Regulator (Rev. A) (sluu007a.pdf, 71 KB)
28 Mar 1998 Download
Back to TopMore Literature
Standard Linear Products Cross-Reference (Rev. D) (slyt017d.pdf, 1169 KB)
05 May 2006 Download
View More Literature for Standard Voltage Regulators

Related Products
Back to Top Alternative Products - Are similar to LM317
Part #Name Comments
LM317L 3/8 Pin 100mA Adjustable Positive Regulator The LM317L is very similar to the LM317 but LM317L has and output current of 100 mA. 
LM317M 3/4 Pin 500mA Adjustable Positive Voltage Regulator The LM317M is very similar to the LM317 but LM317M has an output current of 500 mA. 
TL317 3/8 Pin 100mA Adjustable Positive Voltage Regulator The TL317 has a low voltage dropout. 
UA7805 3 Pin 1.5A Fixed 5V Positive Voltage Regulator UA780x offers only fixed voltage options and does not have the same specification as the LM317. 
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