3/4 Pin 1.5A Adjustable Positive Voltage Regulator - LM317

DESCRIPTION/ORDERING INFORMATION

Customers Who Evaluated This Product Also Evaluated...

Customer Tags

Related Block Diagrams

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.

- See All Related Products


Features	Samples	Technical Documents
Quality & Pb-Free Data	Pricing/Packaging	Application Notes
Related Products	Inventory	Simulation Models
Tools & Software	Symbols/Footprints	Reference Designs

Datasheet

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

	LM317	LM317L	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/Package	2PFM,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
	Samples	Samples	Samples
	Inventory	Inventory	Inventory

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.

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.

These Alternative Products:

LM337: 3 Pin 1.5A Adjustable Negative...
LM317M: 3/4 Pin 500mA Adjustable Posit...
TL780-05: 3 Pin 1.5A Fixed 5V Positive V...
More Alternative Products

These Complementary Products:

TPS62040: Adjustable, 1.2-A, 95% Efficie...
TL431A: Adjustable Precision Shunt Reg...
TLV431A: Low Voltage Adjustable Precisi...
More Complementary Products

What's This?

No Tags are Available for this Part Number

View RoHS Compliant Devices

LM317, Status:ACTIVE
3/4 Pin 1.5A Adjustable Positive Voltage Regulator

Refine Your Selection

- Selection Guides

- Analog & Mixed-Signal: Standard Voltage Regulators

Support

- KnowledgeBase

- Contact Technical Support

- TI Cross Reference

- Training

- Part Marking Lookup

Pricing/Packaging/CAD Design Tools/Samples
				Price	Packaging			CAD Design Tools		Samples
Device	Status	Replaced By	Temp (^oC)	Budget Price ($US) \| QTY	Industry Standard (TI Pkg) \| Pins	Top Side Marking	Standard Pack Quantity \| Package Carrier	Symbols	Footprints	Samples
LM317DCY	ACTIVE		0 to 125	0.36 \| 1ku	SOT-223 (DCY) \| 4	View	80 \| TUBE	Contact TI Distributor or Sales Office
LM317DCYG3	ACTIVE		0 to 125	0.36 \| 1ku	SOT-223 (DCY) \| 4	View	80 \| TUBE	Contact TI Distributor or Sales Office
LM317DCYR	ACTIVE		0 to 125	0.36 \| 1ku	SOT-223 (DCY) \| 4	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
LM317DCYRG3	ACTIVE		0 to 125	0.36 \| 1ku	SOT-223 (DCY) \| 4	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
LM317KC	OBSOLETE	LM317KCS	0 to 125	0.45 \| 1ku	TO-220 (KC) \| 3	View		Replaced by LM317KCS
LM317KCE3	OBSOLETE		0 to 125	0.45 \| 1ku	TO-220 (KC) \| 3	View		Not Available
LM317KCS	ACTIVE		0 to 125	0.38 \| 1ku	TO-220 (KCS) \| 3		50 \| TUBE	Contact TI Distributor or Sales Office
LM317KCSE3	ACTIVE		0 to 125	0.38 \| 1ku	TO-220 (KCS) \| 3		50 \| TUBE	Contact TI Distributor or Sales Office
LM317KTER	OBSOLETE		0 to 125	0.49 \| 1ku	(KTE) \| 3				Not Available
LM317KTTR	ACTIVE		0 to 125	0.36 \| 1ku	DDPAK/TO-263 (KTT) \| 3	View	500 \| LARGE T&R			Request Free Samples
LM317KTTRG3	ACTIVE		0 to 125	0.36 \| 1ku	DDPAK/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
	TI Inventory Status			Reported Distributor Inventory
LM317DCY	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1200*	>10k \| 2 Sep	4 Weeks	Americas	Avnet	290
					Newark	>1k
					Rochester Electronics	>1k
				Europe	Abacus Polar	>1k
LM317DCYG3	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1200*	>10k \| 2 Sep	4 Weeks	Americas	Avnet	780
				Americas	Rochester Electronics	>1k
				Europe	EBV Elektronik	880
LM317DCYR	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 18 Aug	4 Weeks	Americas	Arrow	>1k
					Avnet	>1k
					DigiKey	>1k
					Mouser Electronics	>1k
				Asia	WPI	>1k
				Europe	Arrow Southern Europe	>1k
LM317DCYRG3	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 18 Aug	4 Weeks	Americas	Arrow	>1k
				Americas	Mouser Electronics	>1k
				Europe	Spoerle	>1k
LM317KC	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*		Call**	Americas	Rochester Electronics	>1k
	0*		Call**	Europe	Spoerle	>1k
LM317KCS	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 2 Sep	6 Weeks	Americas	DigiKey	>1k
					Mouser Electronics	>1k
					Rochester Electronics	>1k
				Europe	Spoerle	200
LM317KCSE3	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 2 Sep	6 Weeks	Americas	DigiKey	>1k
	0*		6 Weeks	Americas	Mouser Electronics	>1k
LM317KTER	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*		Call**	Americas	Rochester Electronics	>1k
	0*		Call**	Asia	WPI	>1k
LM317KTTR	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 22 Aug	4 Weeks	Americas	Mouser Electronics	50
				Americas	Newark	>1k
				Asia	WPI	199
LM317KTTRG3	As of 9:55 AM GMT, 25 Jul 2008			As of 9:55 AM GMT, 25 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 22 Aug	4 Weeks	Americas	Mouser Electronics	>1k

* 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
	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
LM317DCY	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
LM317DCYG3	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
LM317DCYR	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
LM317DCYRG3	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
LM317KCS	Pb-Free (RoHS)	CU SN	N/A for Pkg Type	View	View
LM317KCSE3	Pb-Free (RoHS)	CU SN	N/A for Pkg Type	View	View
LM317KTTR	Green (RoHS & no Sb/Br)	CU SN	Level-3-245C-168 HR	View	View
LM317KTTRG3	Green (RoHS & no Sb/Br)	CU SN	Level-3-245C-168 HR	View	View

* 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

Datasheets

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

Application Notes

View Application Notes for Standard Voltage Regulators

User Guides

DV2002L2/TL2 Fast Charge Development System Control of LM317 Linear Regulator (Rev. A) (sluu007a.pdf, 71 KB)
28 Mar 1998 Download

More 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

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.
Customers Who Evaluated This Product Also Evaluated...
LM337	3 Pin 1.5A Adjustable Negative Voltage Regulator	TI customers also evaluated this product.
LM317M	3/4 Pin 500mA Adjustable Positive Voltage Regulator	TI customers also evaluated this product.
TL780-05	3 Pin 1.5A Fixed 5V Positive Voltage Regulator	TI customers also evaluated this product.
UA7805	3 Pin 1.5A Fixed 5V Positive Voltage Regulator	TI customers also evaluated this product.
UA7824	3 Pin 1.5A Fixed 24V Positive Voltage Regulator	TI customers also evaluated this product.
TL780-12	3 Pin 1.5A Fixed 12V Positive Voltage Regulator	TI customers also evaluated this product.
TL780-15	3 Pin 1.5A Fixed 15V Positive Voltage Regulator	TI customers also evaluated this product.
UA78L05A	3/8 Pin 100mA Fixed 5V Positive Voltage Regulator	TI customers also evaluated this product.
LM317L	3/8 Pin 100mA Adjustable Positive Regulator	TI customers also evaluated this product.
UA7815	3 Pin 1.5A Fixed 15V Positive Voltage Regulator	TI customers also evaluated this product.

Complementary Products - Can be used with LM317
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS62040	Adjustable, 1.2-A, 95% Efficient Step-Down Converter, 18uA, MSOP-10	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TL431A	Adjustable Precision Shunt Regulator	REFERENCES-SHUNT VOLTAGE REFERENCES	TI customers also evaluated this product.
TLV431A	Low Voltage Adjustable Precision Shunt Regulator	REFERENCES-SHUNT VOLTAGE REFERENCES	TI customers also evaluated this product.
TPS5420	5.5-V to 36-V, 2-A Step-Down SWIFT(tm) Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS61040	28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications	LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS	TI customers also evaluated this product.
TLC5940	16-Channel LED Driver w/EEprom DOT Correction & Grayscale PWM Control	LIGHTING AND DISPLAY SOLUTIONS-LED DRIVERS	TI customers also evaluated this product.