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LM317 Status: ACTIVE

3/4 Pin 1.5A Adjustable Positive Voltage Regulator


      
         
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See Also

  • LM317L - The LM317L is very similar to the LM317 but LM317L has and output current of 100 mA.
  • LM317M - The LM317M is very similar to the LM317 but LM317M has an output current of 500 mA.
  • TL317 - The TL317 has a low voltage dropout.

View all related products


Datasheet

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 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   0.40 | 1ku  
 SamplesSamplesSamples
 InventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • LM317L: 3/8 Pin 100mA Adjustable Positive Regulator
  • UA7805: 3 Pin 1.5A Fixed 5V Positive Voltage Regulator
  • LM317M: 3/4 Pin 500mA Adjustable Positive Voltage Regulator
  • TLV70033: 200mA, Low IQ, Low Dropout Regulator for Portables
  • TL431A: Adjustable Precision Shunt Regulator
  • TPS5430: 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter

More Related Products

Product Information

Features

  • 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.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Replaced ByPrice | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
LM317DCYACTIVE0 to 125 0.43 | 1kuSOT-223 (DCY) | 4 View 80 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317DCYG3ACTIVE0 to 125 0.43 | 1kuSOT-223 (DCY) | 4 View 80 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317DCYRACTIVE0 to 125 0.36 | 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
LM317DCYRG3ACTIVE0 to 125 0.36 | 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
LM317KCOBSOLETE0 to 125LM317KCS TO-220 (KC) | 3 View   Download CAD Format for this Symbol Download CAD Format for this FootprintReplaced by LM317KCS
LM317KCE3OBSOLETE0 to 125  TO-220 (KC) | 3 View   Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
LM317KCSACTIVE0 to 125 0.36 | 1kuTO-220 (KCS) | 3  50 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317KCSE3ACTIVE0 to 125 0.36 | 1kuTO-220 (KCS) | 3  50 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LM317KTEROBSOLETE0 to 125  (KTE) | 3    Download CAD Format for this Symbol Not Available
LM317KTTRACTIVE0 to 125 0.43 | 1kuDDPAK/TO-263 (KTT) | 3 View 500 | LARGE T&R  
LM317KTTRG3ACTIVE0 to 125 0.43 | 1kuDDPAK/TO-263 (KTT) | 3 View 500 | LARGE T&R  

* 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

Reported Distributor Inventory as of 11:20 AM GMT, 07 Sep 2010
RegionCompanyIn StockPurchase
LM317DCY
AmericasAvnet 661
Newark >1k
Rochester Electronics >1k
AsiaWPI >1k
EuropeAvnet-SILICA >1k
WorldwideDigi-Key  Available
Mouser Electronics >1k
LM317DCYG3
AmericasRochester Electronics >1k
AsiaWPI >1k
EuropeEBV Elektronik >1k
WorldwideDigi-Key  Available
Mouser Electronics >1k
LM317DCYR
AmericasArrow 494
Rochester Electronics >1k
AsiaWPI >1k
EuropeAvnet-SILICA >1k
WorldwideDigi-Key >1k
Mouser Electronics >1k
LM317DCYRG3
AmericasArrow >1k
AsiaArrow Asia >1k
WorldwideDigi-Key  Available
Mouser Electronics >1k
LM317KC
AmericasRochester Electronics >1k
AsiaWPI >1k
LM317KCE3
AmericasRochester Electronics 1k
AsiaWPI 1k
LM317KCS
AmericasArrow >1k
Rochester Electronics >1k
AsiaWPI >1k
WorldwideDigi-Key  Available
Mouser Electronics >1k
LM317KCSE3
WorldwideDigi-Key >1k
Mouser Electronics 498
LM317KTER
AmericasRochester Electronics >1k
AsiaWPI >1k
LM317KTTR
AmericasArrow >1k
Avnet >1k
Newark >1k
EuropeAvnet-SILICA 500
WorldwideDigi-Key >1k
Mouser Electronics >1k
LM317KTTRG3
WorldwideDigi-Key  Available
Mouser Electronics >1k
View all Distributors   

Please contact your preferred TI Authorized Distributor or local TI sales office for lead times on full production quantities.

Quality & Lead (Pb)-Free Data

 Product 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

Datasheet

Application Notes

View Application Notes for Standard Voltage Regulator

User Guides

Selection Guides

Part # Name Product Family Comments
LM317L   3/8 Pin 100mA Adjustable Positive Regulator   LINEAR REGULATORS - STANDARD VOLTAGE 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   LINEAR REGULATORS - STANDARD 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   LINEAR REGULATORS - STANDARD VOLTAGE REGULATOR   The TL317 has a low voltage dropout.  
UA7805   3 Pin 1.5A Fixed 5V Positive Voltage Regulator   LINEAR REGULATORS - STANDARD VOLTAGE REGULATOR   UA780x offers only fixed voltage options and does not have the same specification as the LM317.  
Customers Who Evaluated This Product Also Evaluated...
LM317L 3/8 Pin 100mA Adjustable Positive Regulator LINEAR REGULATORS-STANDARD VOLTAGE REGULATOR TI customers also evaluated this product.
UA7805 3 Pin 1.5A Fixed 5V Positive Voltage Regulator LINEAR REGULATORS-STANDARD VOLTAGE REGULATOR TI customers also evaluated this product.
LM317M 3/4 Pin 500mA Adjustable Positive Voltage Regulator LINEAR REGULATORS-STANDARD VOLTAGE REGULATOR TI customers also evaluated this product.
LM337 3 Pin 1.5A Adjustable Negative Voltage Regulator LINEAR REGULATORS-STANDARD VOLTAGE REGULATOR TI customers also evaluated this product.
TL783 3 Pin 750mA Adjustable Positive Voltage Regulator with 125VIN LINEAR REGULATORS-STANDARD VOLTAGE REGULATOR TI customers also evaluated this product.
TL317 3/8 Pin 100mA Adjustable Positive Voltage Regulator LINEAR REGULATORS-STANDARD VOLTAGE REGULATOR TI customers also evaluated this product.
UA7812 3 Pin 1.5A Fixed 12V Positive Voltage Regulator LINEAR REGULATORS-STANDARD VOLTAGE REGULATOR TI customers also evaluated this product.
TLV70033 200mA, Low IQ, Low Dropout Regulator for Portables LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
TL431A Adjustable Precision Shunt Regulator VOLTAGE REFERENCE-SHUNT VOLTAGE REFERENCE TI customers also evaluated this product.
TPS5430 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter DC/DC CONVERTER (INTEGRATED SWITCH)-STEP-DOWN REGULATOR TI customers also evaluated this product.

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