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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.

Available Datasheets

Part # Manufacturer Description Datasheet
LM317DCYRG3 Texas Instruments 3-pin and 4-pin 1.5-A adjustable positive voltage regulator 4-SOT-223 0 to 125
LM317DCYR Texas Instruments 3-pin and 4-pin 1.5-A adjustable positive voltage regulator 4-SOT-223 0 to 125

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 2480
  • 100 $0.6200
$0.6200 Buy Now
DISTI # 3004217
element14 Asia-Pacific LDO, ADJ, 1.25V-37V, 1.5A, SOT-223-4 RoHS: Compliant Min Qty: 5 Container: Cut Tape 2480
  • 5 $0.8100
  • 50 $0.7000
  • 100 $0.6200
$0.6200 / $0.8100 Buy Now
Bristol Electronics   192
RFQ
Bristol Electronics   21
RFQ
DISTI # LM317DCYR
TME IC: voltage regulator, linear,adjustable, 1.25÷37V, 1.5A, SOT223 Min Qty: 1 1005
  • 1 $0.6750
  • 10 $0.4210
  • 100 $0.3330
  • 500 $0.3090
  • 1,000 $0.2940
  • 2,500 $0.2850
  • 5,000 $0.2720
  • 10,000 $0.2630
  • 25,000 $0.2580
$0.2580 / $0.6750 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 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: 2333 Container: Tape & Reel 378
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
Chip 1 Exchange INSTOCK 1548
RFQ
DISTI # C1S746200550018
Chip1Stop LDO Regulator Pos 1.25V to 37V 1.5A 4-Pin(3+Tab) SOT-223 T/R RoHS: Compliant pbFree: Yes Container: Cut Tape 453
  • 5 $0.3590
  • 10 $0.2320
  • 50 $0.2280
  • 100 $0.2190
$0.2190 / $0.3590 Buy Now
CHIPMALL.COM LIMITED 1.5A Adjustable 1.25V~37V Positive electrode 40V SOT-223-3 Voltage Regulators - Linear, Low Drop Out LDO Regulators ROHS 3665
  • 1 $0.1748
  • 30 $0.1682
  • 100 $0.1551
  • 500 $0.1419
  • 1,000 $0.1354
$0.1354 / $0.1748 Buy Now
Component Electronics, Inc IN STOCK SHIP TODAY 3
  • 1 $7.6900
  • 100 $5.7700
  • 1,000 $5.0000
$5.0000 / $7.6900 Buy Now
LCSC 1.5A Adjustable 1.25V37V Positive electrode 40V SOT-223-3 Voltage Regulators - Linear Low Drop Out (LDO) Regulators ROHS 4158
  • 5 $0.2456
  • 50 $0.1922
  • 150 $0.1662
  • 500 $0.1442
  • 2,500 $0.1379
  • 5,000 $0.1341
$0.1341 / $0.2456 Buy Now
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 Adjustable Positive Single Out RoHS: Compliant Min Qty: 1 Package Multiple: 1 15000
  • 10 $0.6000
  • 100 $0.4800
  • 500 $0.3600
  • 1,000 $0.3000
  • 2,500 $0.2400
$0.2400 / $0.6000 Buy Now
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 44870
  • 300 $0.1682
  • 640 $0.1574
  • 990 $0.1520
  • 1,420 $0.1411
  • 1,845 $0.1357
  • 2,305 $0.1303
$0.1303 / $0.1682 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 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
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
LM317DCYRG3 Texas Instruments Check for Price 1.5-A, 40-V, adjustable linear voltage regulator 4-SOT-223 0 to 125 LM317DCYR vs LM317DCYRG3
LM317T onsemi Check for Price 3-Terminal 1.5 A Positive Adjustable Voltage Regulator, TO-220-3, 1000-TUBE LM317DCYR vs LM317T
LM217D2T STMicroelectronics Check for Price 1.2 V to 37 V adjustable voltage regulators LM317DCYR vs LM217D2T
LM217D2T-TR STMicroelectronics $0.9940 1.2 V to 37 V adjustable voltage regulators LM317DCYR vs LM217D2T-TR
LM317T STMicroelectronics $0.4965 1.2 V to 37 V adjustable voltage regulators LM317DCYR vs LM317T
LM317CM Promax-Johnton Electronic Corporation Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSSO3, TO-263, 3 PIN LM317DCYR vs LM317CM
LM317D2TXM Fairchild Semiconductor Corporation Check for Price Adjustable Positive Standard Regulator, 1.2V Min, 37V Max, BIPolar, PSSO3, LEAD FREE, D2PAK-3 LM317DCYR vs LM317D2TXM
LM317KC Texas Instruments Check for Price 3/4 Pin 1.5A Adjustable Positive Voltage Regulator 3-TO-220 0 to 125 LM317DCYR vs LM317KC
LM317T2 onsemi Check for Price 1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, PSFM3, PLASTIC, TO-220, 3 PIN LM317DCYR vs LM317T2
LM317SX Texas Instruments Check for Price 1.2 V-37V ADJUSTABLE POSITIVE REGULATOR, PSSO3, TO-263, 3 PIN LM317DCYR vs LM317SX

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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