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LM117, LM317-N Wide Temperature Three-Pin Adjustable Regulator

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  • ( )OUT ADJR

    V = 1.25 V I RR

    2

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    LM317-N

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    LM117, LM317-NSNVS774P MAY 2004REVISED OCTOBER 2015

    LM117, LM317-N Wide Temperature Three-Pin Adjustable Regulator1 Features 3 Description

    The LM117 and LM317-N series of adjustable 3-pin1 Typ. 0.1% Load Regulation

    positive voltage regulators are capable of supplying in Typ. 0.01%/V Line Regulation excess of 1.5 A over a 1.25-V to 37-V output range 1.5-A Output Current and a wide temperature range. They are

    exceptionally easy to use and require only two Adjustable Output Down to 1.25 Vexternal resistors to set the output voltage. Further, Current Limit Constant With Temperature both line and load regulation are better than standard

    80-dB Ripple Rejection fixed regulators. Short-Circuit Protected Output The LM117 and LM317-N offer full overload 55C to 150C Operating Temperature Range protection such as current limit, thermal overload

    (LM117) protection and safe area protection. All overloadprotection circuitry remains fully functional even if theadjustment terminal is disconnected.2 Applications

    Automotive LED Lighting Typically, no capacitors are needed unless the deviceis situated more than 6 inches from the input filter Battery Chargerscapacitors, in which case an input bypass is needed. Post Regulation for Switching Supplies An optional output capacitor can be added to improve

    Constant Current Regulators transient response. The adjustment terminal can bebypassed to achieve very high ripple rejection ratios Microprocessor Suppliesthat are difficult to achieve with standard 3-terminalregulators.Typical ApplicationBecause the regulator is floating and detects only theinput-to-output differential voltage, supplies of severalhundred volts can be regulated as long as themaximum input-to-output differential is not exceeded.That is, avoid short-circuiting the output.

    By connecting a fixed resistor between theadjustment pin and output, the LM117 and LM317-Ncan be also used as a precision current regulator.Supplies with electronic shutdown can be achievedby clamping the adjustment terminal to ground, whichprograms the output to 1.25 V where most loads drawlittle current.

    For applications requiring greater output current, seedata sheets for LM150 series (3 A), SNVS772, andLM138 series (5 A), SNVS771. For the negativecomplement, see LM137 (SNVS778) series data*Needed if device is more than 6 inches from filtersheet.capacitors.

    Optionalimproves transient response Device Information(1)PART NUMBER PACKAGE BODY SIZE (NOM)

    TO-3 (2) 38.94 mm x 25.40 mmLM117

    TO (3) 8.255 mm 8.255 mmTO-3 (2) 38.94 mm x 25.40 mmTO-220 (3) 14.986 mm 10.16 mmTO-263 (3) 10.18 mm 8.41 mm

    LM317-NSOT-223 (4) 6.50 mm 3.50 mmTO (3) 8.255 mm 8.255 mmTO-252 (3) 6.58 mm 6.10 mm

    (1) For all available packages, see the orderable addendum atthe end of the data sheet.

    1

    An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,intellectual property matters and other important disclaimers. PRODUCTION DATA.

    http://www.ti.com/product/lm117?qgpn=lm117http://www.ti.com/product/lm317-n?qgpn=lm317-nhttp://www.ti.com/lit/pdf/SNVS772http://www.ti.com/lit/pdf/SNVS771http://www.ti.com/lit/pdf/SNVS778

  • LM117, LM317-NSNVS774P MAY 2004REVISED OCTOBER 2015 www.ti.com

    Table of Contents8.3 Feature Description................................................. 131 Features .................................................................. 18.4 Device Functional Modes........................................ 132 Applications ........................................................... 1

    9 Application and Implementation ........................ 153 Description ............................................................. 19.1 Application Information............................................ 154 Revision History..................................................... 29.2 Typical Applications ................................................ 155 Device Comparison Table ..................................... 3

    10 Power Supply Recommendations ..................... 276 Pin Configuration and Functions ......................... 311 Layout................................................................... 277 Specifications......................................................... 5

    11.1 Layout Guidelines ................................................. 277.1 Absolute Maximum Ratings ...................................... 511.2 Layout Example .................................................... 277.2 ESD Ratings.............................................................. 511.3 Thermal Considerations ........................................ 287.3 Recommended Operating Conditions....................... 5

    12 Device and Documentation Support ................. 357.4 Thermal Information, LM117..................................... 512.1 Documentation Support ........................................ 357.5 Thermal Information, LM317-N ................................. 612.2 Related Links ........................................................ 357.6 LM117 Electrical Characteristics............................... 612.3 Community Resources.......................................... 357.7 LM317-N Electrical Characteristics........................... 712.4 Trademarks ........................................................... 357.8 Typical Characteristics .............................................. 812.5 Electrostatic Discharge Caution............................ 358 Detailed Description ............................................ 1112.6 Glossary ................................................................ 358.1 Overview ................................................................. 11

    13 Mechanical, Packaging, and Orderable8.2 Functional Block Diagram ....................................... 12Information ........................................................... 35

    4 Revision HistoryNOTE: Page numbers for previous revisions may differ from page numbers in the current version.

    Changes from Revision O (January 2014) to Revision P Page

    Added, updated, or renamed the following sections: Description; Pin Configuration and Functions; Specifications;ESD Ratings table; Application and Implementation; Power Supply Recommendations; Layout; Mechanical,Packaging, and Ordering Information .................................................................................................................................... 1

    Removed information regarding LM317A, formerly part of this data sheet. LM317A can now be found in the TIcatalog under literature number SNVSAC2 ........................................................................................................................... 1

    Changes from Revision N (August 2013) to Revision O Page

    Deleted MDT Package (over Full Operating Temperature Range) ....................................................................................... 7 Changed Current Limit MIN from 0.112 to 0.15 and TYP from 0.3 to 0.4 for (VIN VOUT) = 40 V in the LM317A

    and LM317-N Electrical Characteristics Section .................................................................................................................... 7 Deleted MDT Package ........................................................................................................................................................... 7

    2 Submit Documentation Feedback Copyright 20042015, Texas Instruments Incorporated

    Product Folder Links: LM117 LM317-N

    http://www.ti.com/product/lm117?qgpn=lm117http://www.ti.com/product/lm317-n?qgpn=lm317-nhttp://www.ti.comhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS774P&partnum=LM117http://www.ti.com/product/lm117?qgpn=lm117http://www.ti.com/product/lm317-n?qgpn=lm317-n

  • LM117, LM317-Nwww.ti.com SNVS774P MAY 2004REVISED OCTOBER 2015

    5 Device Comparison Table

    Table 1. LM317 Family OptionsPART NUMBER TEMPERATURE DESCRIPTION PRODUCT FOLDER

    LM317-N 0C to 125C 40-V, 1.5-A Catalog device Click hereLM317A 40C to 125C 40-V, 1.5-A Industrial device Click here

    LM317HV 0C to 125C 60-V, 1.5-A Catalog device Click hereLM317L-N 40C to 125C 40-V, 0.1-A, Industrial device Click here

    LM117 55C to 150C 40-V, 1.5-A Extended-temperature device Click hereLM117HV 55C to 150C 60-V, 1.5-A Extended-temperature device Click here

    LM117HVQML 55C to 125C 60-V, 1.5-A Military-grade device per spec MIL-PRF-38535 Click hereLM117HVQML-SP 55C to 125C 60-V, 1.5-A Space-grade device Click here

    LM117JAN 55C to 125C 40-V, 1.5-A Military-grade device per spec MIL-PRF-38510 Click hereLM117QML 55C to 125C 40-V, 1.5-A Military-grade device per spec MIL-PRF-38535 Click here

    LM117QML-SP 55C to 125C 40-V, 1.5-A Space-grade device Click here

    6 Pin Configuration and Functions

    NDS Metal Can PackageNDT Metal Can Package2-Pin TO-3

    3-Pin TOBottom ViewBottom View

    Case is OutputCase is Output

    Pin Functions, Metal Can PackagesPIN

    I/O DESCRIPTIONNAME TO-3 TOADJ 1 2 Adjust pinVOUT CASE 3, CASE O Output voltage pin for the regulatorVIN 2 1 I Input voltage pin for the regulator

    Copyright 20042015, Texas Instruments Incorporated Submit Documentation Feedback 3

    Product Folder Links: LM117 LM317-N

    http://www.ti.com/product/lm117?qgpn=lm117http://www.ti.com/product/lm317-n?qgpn=lm317-nhttp://www.ti.comhttp://www.ti.com/lit/pdf/SNVS774http://www.ti.com/product/lm317-nhttp://www.ti.com/lit/pdf/SNVSAC2http://www.ti.com/product/LM317Ahttp://www.ti.com/lit/pdf/SNVS

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