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Power Circuits / Linear Regulator ICs / LM317DCYR
Datasheets
LM317DCYR by:

1.5-A, 40-V, adjustable linear voltage regulator 4-SOT-223 0 to 125

Part Details for LM317DCYR by Texas Instruments

Results Overview of LM317DCYR by Texas Instruments

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

LM317DCYR Information

LM317DCYR by Texas Instruments 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 LM317DCYR

Part # Distributor Description Stock Price Buy
DISTI # 3004217RL
element14 Asia-Pacific LDO, ADJ, 1.25V-37V, 1.5A, SOT-223-4 RoHS: Compliant Min Qty: 100 Container: Reel 2445
  • 100 $0.4900
  • 500 $0.4500
$0.4500 / $0.4900 Buy Now
DISTI # 3004217
element14 Asia-Pacific LDO, ADJ, 1.25V-37V, 1.5A, SOT-223-4 RoHS: Compliant Min Qty: 1 Container: Cut Tape 2445
  • 1 $0.7800
  • 10 $0.6400
  • 100 $0.4900
  • 500 $0.4500
$0.4500 / $0.7800 Buy Now
DISTI # 296-12602-1-ND
DigiKey IC REG LIN POS ADJ 1.5A SOT223-4 Min Qty: 1 Lead time: 6 Weeks Container: Cut Tape (CT), Digi-Reel®, Tape & Reel (TR) 14812
In Stock
  • 1 $0.6400
  • 10 $0.4530
  • 25 $0.4060
  • 100 $0.3546
  • 250 $0.3300
  • 500 $0.3153
  • 1,000 $0.3031
  • 2,500 $0.2902
  • 5,000 $0.2825
  • 7,500 $0.2786
  • 12,500 $0.2743
  • 17,500 $0.2718
  • 25,000 $0.2693
$0.2693 / $0.6400 Buy Now
DISTI # 595-LM317DCYR
Mouser Electronics Linear Voltage Regulators 3 Term Adj. Pos. A 595-LM317DCY RoHS: Compliant 43872
  • 1 $0.6100
  • 10 $0.4310
  • 25 $0.3930
  • 100 $0.3450
  • 250 $0.3140
  • 1,000 $0.3020
  • 2,500 $0.2780
  • 10,000 $0.2650
  • 20,000 $0.2620
$0.2620 / $0.6100 Buy Now
DISTI # V72:2272_07271221
Arrow Electronics Standard Regulator Pos 1.25V to 37V 1.5A 4-Pin(3+Tab) SOT-223 T/R RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 6 Weeks Date Code: 2249 Container: Cut Strips Americas - 2362
  • 1 $0.4505
  • 10 $0.3617
  • 25 $0.3397
  • 100 $0.3099
  • 250 $0.2808
  • 500 $0.2803
  • 1,000 $0.2798
$0.2798 / $0.4505 Buy Now
DISTI # 66400005
Verical Standard Regulator Pos 1.25V to 37V 1.5A 4-Pin(3+Tab) SOT-223 T/R RoHS: Compliant Min Qty: 23 Package Multiple: 1 Date Code: 2249 Americas - 2362
  • 23 $0.3617
  • 25 $0.3397
  • 100 $0.3099
  • 250 $0.2808
  • 500 $0.2803
  • 1,000 $0.2798
$0.2798 / $0.3617 Buy Now
Bristol Electronics   192
RFQ
Bristol Electronics   21
RFQ
Quest Components IC,VOLT REGULATOR,ADJUSTABLE,+1.2 TO +37V,BIPOLAR,SOT-223,3PIN,PLASTIC 3346
  • 1 $0.9450
  • 706 $0.2457
  • 3,257 $0.2363
$0.2363 / $0.9450 Buy Now
Quest Components IC,VOLT REGULATOR,ADJUSTABLE,+1.2 TO +37V,BIPOLAR,SOT-223,3PIN,PLASTIC 167
  • 1 $0.9790
  • 27 $0.5874
  • 103 $0.4895
$0.4895 / $0.9790 Buy Now
Quest Components IC,VOLT REGULATOR,ADJUSTABLE,+1.2 TO +37V,BIPOLAR,SOT-223,3PIN,PLASTIC 23
  • 1 $0.5874
  • 10 $0.4895
$0.4895 / $0.5874 Buy Now
DISTI # LM317DCYR
TME IC: voltage regulator, linear,adjustable, 1.25÷37V, 1.5A, SOT223 Min Qty: 1 3471
  • 1 $0.6600
  • 10 $0.4110
  • 100 $0.3250
  • 500 $0.3020
  • 1,000 $0.2870
  • 2,500 $0.2780
  • 5,000 $0.2660
  • 10,000 $0.2560
  • 25,000 $0.2520
$0.2520 / $0.6600 Buy Now
ComSIT USA Electronic Component RoHS: Compliant Stock DE - 0
Stock ES - 2068
Stock US - 0
Stock MX - 0
Stock CN - 0
Stock HK - 0
RFQ
NexGen Digital   2
RFQ
DISTI # SMC-LM317DCYR
Sensible Micro Corporation OEM Excess 5-7 Days Leadtime, We are an AS6081 Certified Vendor, 1 Yr Warranty RoHS: Not Compliant Min Qty: 25 Lead time: 2 Weeks, 0 Days Date Code: 749 Container: Tape & Reel 8349
RFQ
DISTI # SMC-LM317DCYR
Sensible Micro Corporation IC, Linear Reg, Adj, LM317 1.5A, SOT-223 RoHS: Compliant Min Qty: 25 Lead time: 0 Weeks, 1 Days Date Code: 2006+ Container: Tape & Reel 1574
  • 100 $0.1852
  • 500 $0.1805
  • 1,000 $0.1710
$0.1710 / $0.1852 RFQ
DISTI # SMC-LM317DCYR
Sensible Micro Corporation 1.5A Adjustable 1.25V~37V Positive 40V Sot223 Linear Technology RoHS: Compliant Min Qty: 25 Lead time: 0 Weeks, 1 Days Date Code: 07+ Container: Tape & Reel 257
  • 100 $0.1852
  • 500 $0.1805
  • 1,000 $0.1710
$0.1710 / $0.1852 RFQ
DISTI # SMC-LM317DCYR
Sensible Micro Corporation AS6081 Certified Vendor, 1 Yr Warranty RoHS: Not Compliant Min Qty: 25 Lead time: 2 Weeks, 0 Days Date Code: 2333 Container: Tape & Reel 206
RFQ
Component Electronics, Inc IN STOCK SHIP TODAY 3
  • 1 $7.6900
  • 100 $5.7700
  • 1,000 $5.0000
$5.0000 / $7.6900 Buy Now
Cytech Systems Limited IC REG LIN POS ADJ 1.5A SOT223-4 2500
RFQ
MacroQuest Electronics ISO 9001: 2015, ISO 14001:2015, ISO 45001:2018 15670
  • 1 $0.3600
  • 500 $0.3100
  • 1,000 $0.2700
$0.2700 / $0.3600 Buy Now
New Advantage Corporation IC-317 V.REG LDO ADJ 1.5A SOT223 TI RoHS: Compliant Min Qty: 1 Package Multiple: 100 3972
  • 900 $0.4725
  • 3,972 $0.4362
$0.4362 / $0.4725 Buy Now
Vyrian Regulators 34633
RFQ
Win Source Electronics IC REG LINEAR ADJ 1.5A SOT223-4 / Standard Regulator Pos 1.25V to 37V 1.5A 4-Pin(3+Tab) SOT-223 T/R 132000
  • 120 $0.2798
  • 255 $0.2618
  • 400 $0.2527
  • 570 $0.2347
  • 740 $0.2257
  • 925 $0.2167
$0.2167 / $0.2798 Buy Now

Part Details for LM317DCYR

LM317DCYR CAD Models

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LM317DCYR Part Data Attributes

Parametric Data
LM317DCYR Texas Instruments
Buy Now Datasheet
Compare Parts:
LM317DCYR Texas Instruments 1.5-A, 40-V, adjustable linear voltage regulator 4-SOT-223 0 to 125
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code SOT-223
Package Description GREEN, PLASTIC, SOT-223, 4 PIN
Pin Count 4
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer Texas Instruments
Adjustability ADJUSTABLE
Dropout Voltage1-Nom 2 V
Input Voltage-Max 40 V
Input Voltage-Min 3 V
Input-Output Voltage Differential-Max 40 V
Input-Output Voltage Differential-Min 3 V
JESD-30 Code R-PDSO-G4
JESD-609 Code e3
Length 6.5 mm
Line Regulation-Max (%/V) 0.07
Load Regulation-Max(%) 1.5%
Moisture Sensitivity Level 2
Number of Functions 1
Number of Outputs 1
Number of Terminals 4
Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min
Operating Temperature-Max 125 °C
Operating Temperature-Min
Output Current1-Max 1.5 A
Output Voltage1-Max 37 V
Output Voltage1-Min 1.25 V
Output Voltage1-Nom 37 V
Package Body Material PLASTIC/EPOXY
Package Code SOP
Package Equivalence Code SOT-223
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Packing Method TR
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Regulator Type ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR
Seated Height-Max 1.8 mm
Surface Mount YES
Technology BIPOLAR
Terminal Finish Matte Tin (Sn)
Terminal Form GULL WING
Terminal Pitch 2.3 mm
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) 30
Voltage Tolerance-Max 5%
Width 3.5 mm

Alternate Parts for LM317DCYR

This table gives cross-reference parts and alternative options found for LM317DCYR. 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 LM317DCYR, 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
LM317DCY Texas Instruments $0.4374 1.5-A, 40-V, adjustable linear voltage regulator 4-SOT-223 0 to 125 LM317DCYR vs LM317DCY
LM317DCYG3 Texas Instruments Check for Price 1.5-A, 40-V, adjustable linear voltage regulator 4-SOT-223 0 to 125 LM317DCYR vs LM317DCYG3
Part Number Manufacturer Composite Price Description Compare
LM317T STMicroelectronics $0.3173 1.2 V to 37 V adjustable voltage regulators LM317DCYR vs LM317T
LM317T/NOPB Texas Instruments $1.3351 1.5-A, 40-V, adjustable linear voltage regulator 3-TO-220 0 to 125 LM317DCYR vs LM317T/NOPB
LM317S/NOPB Texas Instruments $1.5996 1.5-A, 40-V, adjustable linear voltage regulator 3-DDPAK/TO-263 0 to 125 LM317DCYR vs LM317S/NOPB
LM317T#PBF Analog Devices Inc Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSFM3 LM317DCYR vs LM317T#PBF
LM317S National Semiconductor Corporation Check for Price IC VREG 1.2 V-37 V ADJUSTABLE POSITIVE REGULATOR, PSSO3, TO-263, 3 PIN, Adjustable Positive Single Output Standard Regulator LM317DCYR vs LM317S
LM317D2TR4 Motorola Mobility LLC Check for Price 1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, PSSO2, PLASTIC, D2PAK-3 LM317DCYR vs LM317D2TR4
LM317ASX Texas Instruments Check for Price 1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, PSSO3, TO-263, SMT-3 LM317DCYR vs LM317ASX
LM317BD2TR4 Motorola Semiconductor Products Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSSO2, PLASTIC, D2PAK-3 LM317DCYR vs LM317BD2TR4
LM317T Motorola Semiconductor Products Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSFM3, PLASTIC, TO-220, 3 PIN LM317DCYR vs LM317T
LM317T Samsung Semiconductor Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSFM3, TO-220, 3 PIN LM317DCYR vs LM317T

LM317DCYR Related Parts

LM317DCYR Frequently Asked Questions (FAQ)

  • The minimum input voltage required for the LM317DCYR 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 LM317DCYR can supply is 1.5A. However, it's recommended to derate the current to 1A or less to ensure reliable operation.

  • The output voltage of the LM317DCYR can be adjusted by using a resistive divider network between the output and the adjust pin. The output voltage can be calculated using the formula: Vout = 1.25 * (1 + R2/R1).

  • The thermal shutdown temperature of the LM317DCYR is 150°C. The device will shut down if the junction temperature exceeds this value.

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