LM317T Datasheet
Voltage Regulator, Adj Positive, 1.5A, 1.2V To 37V, Pkg Style TO220
Download: LM317T Datasheet 
LM317T
Voltage Regulator, Adj Positive, 1.5A, 1.2V To 37V, Pkg Style TO220
National Semiconductor
Low Dropout Regulators
Mfr. s Type
TO-220
LP2951CN
Lm2940t-10.0 Lm2940t-12.0 Lm2940t-5.0 Lm2940t-8.0 Lm2940t-9.0 Lm2940ct-12 Lm2940ct-15 Lm2940ct-5.0
Lm2941t Lm2941ct Lm2990t-12 Lm2990t-15 Lm2990t-5.0 Lm2990t-5.2 Lm2991t Lm2937et-12 Lm2937et-15
LM2937ET-5.0 LM2930T-5.0 LM2930T-8.0 LM2931T-5.0 LM2931CT
LM2931Z-5.0 LM2936Z-5.0
*Typical dropout voltage specified under full load operation.
Output Current
1.00 0.50 0.15 0.10 0.05
Output Voltage
10 12 5 8 9 12 15 5 Adj. (5 To 20) Adj. (5 To 20) 12 15 5 5.2 Adj. ( 2 To 25) 12 15 5 8 5
Adj. (3 to 29) Adj. (1.24 to 29) 5
Dropout Voltage*
0.50 0.60 0.50 0.32 0.30 0.38 0.20
Typical Input Voltage (V)
26 26 26 26 26 26 24 30 40
Maximum Quiescent Current
10.000 1.000 2.000 4.000 0.400 0.075 0.009
Adjustable Positive Voltage Regulators
Mfr. s Type
TO-220
LM117H LM317H LM317AH LM317HVH
LM317LM
LM338T LM350T LM350AT LM317T LM317HVT
LM317AT
LM317LZ
*in Cases Where The Regulator Is Floating The Maximum Input-to-output Voltage Differential Is
listed.
LM317T Datasheet
Voltage Regulator, +1.2V To +37V, Pkg Style Case 221A
Download: LM317T Datasheet
LM317T
Voltage Regulator, +1.2V To +37V, Pkg Style Case 221A
Voltage Regulators and Switching Regulators
Voltage Regulators (Continued)
ON Semiconductor
Linear Voltage Regulators (Continued)
Fixed Output (Continued)
Case 29/TO-92
Mc78l08acp Mc78l12acp Mc78l15acp Mc78l24acp
Positive Regulator
Case 221A
Case 369A
Lm340at-5.0 Mc78t05ct Mc78t05act Lm323at Mc7806ct Mc78m08ct Mc7808ct Mc78t08ct Mc78m12ct
Mc7812ct Mc7812act Lm340t-12 Lm340at-12 Mc78t12ct Mc78t12act Mc78m15ct Mc7815bt Mc7815ct
Mc7815act Lm340t-15 Lm340at-15 Mc78t15ct Mc7818ct Mc78m20ct Mc78m24ct Mc7824bt Mc7824ct
MC78M08CDT MC78M12CDT
Mfr.'s Type
Case 751/SO-8
MC78L12ACD
Case 29/TO-92
MC79L12ACP MC79L15ACP
Negative Regulator
Case 221A
Case 369A
MC7906CT
MC7908CT
MC7912CT
MC7915CT
MC7915ACT
MC7918CT
LM317T Datasheet
3-terminal 1.5 Amp Adjustable Voltage Regulator
Download: LM317T Datasheet
LM317T
3-terminal 1.5 Amp Adjustable Voltage Regulator
Bay Linear
Inspire the Linear Power
3-Terminal 1.5Amp Adjustable Voltage Regulator
Description
The Bay Linear Lm317 Are Monolithic Integrated Circuit In To- 220, To-252, Sot-223 And D2pak
packages intended for use as positive adjustable voltage regulators.
They Are Designed To Supply More Than 1.5a Of Load Current With An Output Voltage Adjustable Over A
1.2 to 37V range.
The Nominal Output Voltage Is Selected By Means Of Only A Resistive Divider, Making The Device
exceptionally easy to use and eliminating the stocking of many fixed regulators.
FEATURES
Output Current of 1.5A
Output Voltage Tolerance of 5%
Adjustable Output 1.2V to 37V
0.1% Load & Line Regulation
Internal Short-Circuit Limited
Current Limit
Offer in plastic TO-252, TO-220, SOT-223
& TO-263
Direct Replacement for LM317
Applications
Post regulator for switching DC/DC converter
Bias supply for analog circuits
Packaging Information
TO-263-3 (S) Bay Linear
Top View
1. ADJ 2. Output 3. Input
Ordering Information
Device
LM317T LM317N LM317S LM317D
Package Type
TO-220 SOT-223 TO-263 TO-252
Output
1.5 Amp 1.0 Amp 1.5 Amp 1.5 Amp
SOT-223 Vs. TO-252 Package
LM317T Datasheet
3-Terminal Positive Adjustable Regulator
Download: LM317T Datasheet
LM317T
3-Terminal Positive Adjustable Regulator
FEATURES
Output Current In Excess of 1. 5A
Output Adjustable Between 1. 2V and 37V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe Operating Area Compensation
TO-220 Package
Description
This Monolithic Integrated Circuit Is An Adjustable 3-terminal Positive Voltage Regulator Designed
To Supply More Than 1.5a Of Load Current With An Output Voltage Adjustable Over A 1.2 To 37v. It
employs internal current limiting, thermal shut-down and safe area compensation.
TO-220
1. Adj 2. Output 3. Input
Internal Block Diagram
InVpuint 3
Voltage Reference
Protection Circuitry
VAaddjj
2001 Fairchild Semiconductor
Rlimit 2 Vo Output
Rev. 1.0.0
Absolute
MAXIMUM RATINGS
Parameter Input-output Voltage Differential Lead Temperature Power Dissipation Operating Junction
Temperature Range Storage Temperature Range Temperature Coefficient Of Output Voltage
Symbol VI - VO TLEAD
Value 40 230
Internally limited 0 ~ +125 -65 ~+125 0.02
Unit V C W C C
Electrical Characteristics
(vi-vo=5v, Io= 0.5a, 0 C Tj + 125 C, Imax = 1.5a, Pdmax = 20w, Unless Otherwise Specified)
Parameter Line Regulation (Note1)
Load Regulation (Note1)
LM317T Datasheet
Adjustable Voltage Regulator (Positive)
Download: LM317T Datasheet
LM317T
Adjustable Voltage Regulator (Positive)
LM317T (KA317)
LM317T (KA317) Adjustable Voltage Regulator (Positive)
3-TERMINAL POSITIVE ADJUSTABLE REGULATOR
This Monolithic Integrated Circuit Is An Adjustable 3-terminal Positive Voltage Regulator Designed
To Supply 2.2a Typical Of Load Current With An Output Voltage Adjustable Over A 1.2 To 37v. It
employs internal current limiting, thermal shutdown and safe area compensation.
TO-220
FEATURES
Output Current 2.2A Typical
Output Adjustable Between 1. 2V and 37V
Internal Thermal-Overload Protection
Internal Short-Circuit Current-Limiting
Output Transistor Sate-Area Compensation
TO-220 Package
ORDERING INFORMATION
Device
Package Operating Temperature
LM317T (KA317) TO-220
0 C ~ +125 C
BLOCK DIAGRAM
Voltage Reference
1 Vadj
2000 Fairchild Semiconductor International
Production Circuitry
Rlimit 2 Vo
Rev. B, May 2000
LM317T (KA317)
ABSOLUTE
MAXIMUM RATINGS (TA= +25 C, unless otherwise speci ed)
Characteristic
LM317T Datasheet
LM117/LM317A/LM317 3-Terminal Adjustable Regulator; Package: TO-220; No Of Pins: 3;
Download: LM317T Datasheet
LM317T
LM117/LM317A/LM317 3-Terminal Adjustable Regulator; Package: TO-220; No Of Pins: 3;
LM117/LM317A/LM317 3-Terminal Adjustable Regulator
October 20, 2008
LM117/LM317A/LM317 3-Terminal Adjustable Regulator
General
Description
The Lm117 Series Of Adjustable 3-terminal Positive Voltage Regulators Is Capable Of Supplying In
Excess Of 1.5a Over A 1.2v To 37v Output Range. They Are Exceptionally Easy To Use And Require Only
Two External Resistors To Set The Output Voltage. Further, Both Line And Load Regulation Are Better
Than Standard Fixed Regulators. Also, The Lm117 Is Packaged In Standard Transistor Packages Which
are easily mounted and handled.
In Addition To Higher Performance Than Fixed Regulators, The Lm117 Series Offers Full Overload
Protection Available Only In Ic's. Included On The Chip Are Current Limit, Thermal Overload
Protection And Safe Area Protection. All Overload Protection Circuitry Remains Fully Functional Even
if the adjustment terminal is disconnected.
Normally, No Capacitors Are Needed Unless The Device Is Situated More Than 6 Inches From The Input
Filter Capacitors In Which Case An Input Bypass Is Needed. An Optional Output Capacitor Can Be Added
To Improve Transient Response. The Adjustment Terminal Can Be Bypassed To Achieve Very High Ripple
Rejection Ratios Which Are Difficult To Achieve With Standard 3-terminal Regulators.
Besides Replacing Fixed Regulators, The Lm117 Is Useful In A Wide Variety Of Other
Applications. Since The Regulator Is "floating" And Sees Only The Input-to-output Differential
voltage, supplies of several hundred volts can be regulated as long as
The Maximum Input To Output Differential Is Not Exceeded, I.e., Avoid Short-circuiting The Output.
Also, It Makes An Especially Simple Adjustable Switching Regulator, A Programmable Output Regulator,
Or By Connecting A Fixed Resistor Between The Adjustment Pin And Output, The Lm117 Can Be Used As A
Precision Current Regulator. Supplies With Electronic Shutdown Can Be Achieved By Clamping The
Adjustment Terminal To Ground Which Programs The Output To 1.2v Where Most Loads Draw Little
current.
Applications Requiring Greater Output Current, See Lm150 Series (3a) And Lm138 Series (5a) Data
sheets. For the negative complement, see LM137 series data sheet.
FEATURES
Guaranteed 1% output voltage tolerance (LM317A)
Guaranteed max. 0.01%/V line regulation (LM317A)
Guaranteed max. 0.3% load regulation (LM117)
Guaranteed 1.5A output current
Adjustable output down to 1.2V
Current limit constant with temperature
P+ Product Enhancement tested
80 dB ripple rejection
Output is short-circuit protected
Typical
Applications
1.2V-25V Adjustable Regulator
LM117/LM317A/LM317 Package Options
LM317T Datasheet
3-Terminal Adjustable Regulator
Download: LM317T Datasheet
LM317T
3-Terminal Adjustable Regulator
LM117/LM317A/LM317 3-Terminal Adjustable Regulator
August 1999
LM117/LM317A/LM317 3-Terminal Adjustable Regulator
General
Description
The Lm117 Series Of Adjustable 3-terminal Positive Voltage Regulators Is Capable Of Supplying In
Excess Of 1.5a Over A 1.2v To 37v Output Range. They Are Exceptionally Easy To Use And Require Only
Two External Resistors To Set The Output Voltage. Further, Both Line And Load Regulation Are Better
Than Standard Fixed Regulators. Also, The Lm117 Is Packaged In Standard Transistor Packages Which
are easily mounted and handled.
In Addition To Higher Performance Than Fixed Regulators, The Lm117 Series Offers Full Overload
Protection Available Only In Ic's. Included On The Chip Are Current Limit, Thermal Overload
Protection And Safe Area Protection. All Overload Protection Circuitry Remains Fully Functional Even
if the adjustment terminal is disconnected.
Normally, No Capacitors Are Needed Unless The Device Is Situated More Than 6 Inches From The Input
Filter Capacitors In Which Case An Input Bypass Is Needed. An Optional Output Capacitor Can Be Added
To Improve Transient Response. The Adjustment Terminal Can Be Bypassed To Achieve Very High Ripple
Rejection Ratios Which Are Difficult To Achieve With Standard 3-terminal Regulators.
Besides Replacing Fixed Regulators, The Lm117 Is Useful In A Wide Variety Of Other
Applications. Since The Regulator Is "floating" And Sees Only The Input-to-output Differential Volt-
Age, Supplies Of Several Hundred Volts Can Be Regulated As Long As The Maximum Input To Output
differential is not exceeded, i.e., avoid short-circuiting the output.
Also, It Makes An Especially Simple Adjustable Switching Regulator, A Programmable Output Regulator,
Or By Connecting A Fixed Resistor Between The Adjustment Pin And Output, The Lm117 Can Be Used As A
Precision Current Regulator. Supplies With Electronic Shutdown Can Be Achieved By Clamping The
Adjustment Terminal To Ground Which Programs The Output To 1.2v Where Most Loads Draw Little
current.
Applications Requiring Greater Output Current, See Lm150 Series (3a) And Lm138 Series (5a) Data
sheets. For the negative complement, see LM137 series data sheet.
FEATURES
N Guaranteed 1% Output Voltage Tolerance (lm317a) N Guaranteed Max. 0.01%/v Line Regulation (lm317a)
N Guaranteed Max. 0.3% Load Regulation (lm117) N Guaranteed 1.5a Output Current N Adjustable Output
Down To 1.2v N Current Limit Constant With Temperature N P+ Product Enhancement Tested N 80 Db
ripple rejection n Output is short-circuit protected
Typical
Applications
1.2V-25V Adjustable Regulator
DS009063-1
Full Output Current Not Available At High Input-output Voltages *needed If Device Is More Than 6
Inches From Filter Capacitors. Optional - Improves Transient Response. Output Capacitors In The
range
Of 1 F To 1000 F Of Aluminum Or Tantalum Electrolytic Are Commonly Used To Provide Improved
output impedance and rejection of transients.
LM117 Series Packages
Part Number Suffix
K H T E S EMP MDT
Package
TO-3 TO-39 TO-220 LCC TO-263 SOT-223 TO-252
Design Load Current 1.5A 0.5A 1.5A 0.5A 1.5A
1A 0.5A
SOT-223 vs D-Pak (TO-252) Packages
1999 National Semiconductor Corporation DS009063
LM317T Datasheet
Cross Reference Guide
Download: LM317T Datasheet
LM317T
Cross Reference Guide
Part Number An1311 An1311s An1319 An1319s An1339 An1339ns An1393 An1393ns An311 An311s An7810 To-220
An78l06 An78l08 An78l09 An78l18 An78l20 An78l24 An78m10 An78m18 An78m20 An7924 An79l05 An79l06
An79l08 An79l09 An79l12 An79l15 An79l18 An79l24 An8388 Ba1404 Ba15532 Ba15534 Ba3404f Ba3880 Ba4558
Ba4558s Ba4560 Ba4560f Ba6295 Ba6296/97/98 Ba7001 Ba7021 Ba7602 Ba7602f Ba7603 Ba7603f Ba7607
BA7607F BA7609 BA7609F BA7611
Cross Reference Guide Sorted By Part Number
Njr Part Number Njm311d Njm311m Njm319d Njm319m Njm2901n Njm2901m Njm2903d Njm2903m Njm311d Njm311m
Njm7810fa Njm78l06a Njm78l08a Njm78l09a Njm78l18a Njm78l20a Njm78l24a Njm78m10fa Njm78m18fa
Njm78m20fa Njm7924fa Njm79l05a Njm79l06a Njm79l08a Njm79l09a Njm79l12a Njm79l15a Njm79l18a Njm79l24a
Njw4301 Njm2035 Njm5532d Njm5532m Njm5534d Njm5534m Njm2076m Njm2150/a Njm2152 Njm4558d Njm4558e
Njm4558m Njm4560d Njm4560e Njm4560m Njw4301 Njm2233 Njm2533 Njm2273s Njm2273 Njm2283d Njm2283
Njm2283m Njm2286d Njm2286 Njm2286m Njm2285d Njm2285 Njm2285m Njm2284d Njm2284 Njm2284m Njm2245
NJM2246
Note 4 Note 4 Note 4 Note 4 Note 4 Note 2
Note 2 Note 2 Note 2 Note 2
Note 4 Note 4 Note 1 Note 1 Note 1 Note 4, 6 Note 4, 6
Note 1
Note 1 Note 4 Note 4
Note 1
Note 1 Note 1
12/12/00
Manufacturer PANASONIC ROHM
1 of 28
Part Number Ba7611an Ba7677 Bh3541 Bh3543 Bh3868 Bu2029/4x Bu2114 Ca555 Dip Ca555 Smt Ca555 Smt
Ca556 Dip Ca556 Smt Ca723 Dip Ca723 Smt Cd4051bc Cd4051be Cd4051bm Cd4052bc Cd4052be Cd4052bm
Cd4053bc Cd4053be Cd4053bm Cd4066bc Cd4066be Cd4066bm Cf5002 Series Cf5005 Cg1022tm Cgx1030n Cnb1001
Cnb2001 Cs54924 Cxa1103 Cxa1183 Cxa1474 Cxa1558l Cxa1571 Cxg1006n/16n Cxg1009tn Cxg1010n
Cxg1013n/14n Cxg1022tm Cxg1030n Cxg1040tn Cxg1064a Cxg1064atn Cxg1068n Cxg1077tn Cxm-134l Cxm-134s
Dac-0801lcm Dac-0801lcn Dac08cd Dac08cp Dac-08n Dg201a Dip Dg201a Dip Dg201a Dip Dg201a Dip Dg201a
SMT
Cross Reference Guide Sorted By Part Number
Njr Part Number Njm2246l Njm2151 Njm2151a Njm2768 Njm2769a Njw1130 Njm2155 Nju3713 Nju3711 Njm555d
Njm555e Njm555m Njm556d Njm556m Njm723d Njm723m Nju4051bd Nju4051bm Nju4052bd Nju4052bm Nju4053bd
Nju4053bm Nju4066bd Nju4066bm Nju6395 Series Nju6393 Njg1508/09 Njg1309 Njl5183k/97k Njl5194k
Nju25301 Njm2232a Njm2292 Njm2294 Njm2279 Njm2117 Njg1506/07 Njg1505/12 Njg1301/02 Njg1705/09
Njg1508/09 Njg1309 Njg1524 Njg1515a Njg1519 Njg1516 Njl81h Series Njl81v Series Njmdac-08mc
NJMDAC-08DE NJMDAC-08MC NJMDAC-08DE NJU201AD NJU7301D NJU201AM
Note 4, 6
Note 1 Note 1 Note 1
Note 1
SIMILAR
Note 4, 6 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4
Note 1 Note 1
Note 1
12/12/00
Manufacturer Rohm Harris National Harris National Harris National Harris National Harris National
Npc Sony Matsushita Crystal Sony National Motorola Raytheon Harris Siliconix/temic Harris
SILICONIX/TEMIC HARRIS
2 of 28
Part Number Dg201a Smt Dg201a Smt Dg201a Smt Dg211 Dip Dg211 Dip Dg211 Smt Dg211 Smt Ds14c232
Dsp56011 Fa7610p/n Fc2245 Fc2326k Fcs2331k Gn01046b Gn01071b Gn01087b Gn01096b Gn02018b/19b Gn02022b
Gn02032b Gn02035b Gn05002 Gn4002 Gn4005 Gp1u10x Gp1u26x/r Gp1u27r Gp1u27x Gp1u28q Gp1u28r Gp1u28x
Gp1u28y Gp1u59x Gp1u901x Gp2l09 Gp2l24 Gp2l26 Gp2s09 Gp2s24 Gp2s26 Gp2s27 Gp2s40 Ha12163 Ha16128l
Ha17339p Ha17393fp Ha17393ps Ha17901p Ha17903fp Ha17903ps Ha22033 Hd404201 Hd404344 Hd40l4201
HD44100 HD44102 (50 OUT) HD44780 HD44780U
Cross Reference Guide Sorted By Part Number
Njr Part Number Nju201am Nju7301m Nju211d Nju211m Nju6401b Nju6402b Nju25301 Njm2368 Nju6468
Nju6469/6461 Nju6676 Njg1705/09 Njg1104 Njg1705/09 Njg1104 Njg1550/51 Njg1552/53 Njg1550/51 Njg1555
Njg1557 Njg1309 Njg1508/09 Njg1506/07 Njl61h Series Njl82h Series Njl67h Series Njl63h Series Njl65v
Series Njl68h Series Njl64h Series Njl62v Series Njl81h Series Njl62h Series Njl5166k Njl5168k
Njl5164k-f10 Njl5165k Njl5167k Njl5163k-f10 Njl5193k-f10 Njl5183k/97k Njl5165k Njm2085 Nju7092
Nju7092f Njm2901n Njm2903m Njm2903d Njm2901n Njm2903m Njm2903d Njg1103 Nju3502 Nju3504 Nju3502
NJU6407C NJU6407CR NJU6417C NJU6408B NJU6468 NJU6470
Note 1 Note 1 Note 1 Note 1 Note 1 Note 4 Note 4 Note 4, 6
Note 4 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4 Note 4
Note 4 Note 4 Note 4 Note 4
12/12/00
LM317T Datasheet
1.5A, Adjustable Output 1.2 To 37V, Voltage Regulator With ±4% Tolerance, Ta = 0°C
Download: LM317T Datasheet
LM317T
1.5A, Adjustable Output 1.2 To 37V, Voltage Regulator With ±4% Tolerance, Ta = 0°C
LM317, NCV317
1.5 A Adjustable Output, Positive Voltage Regulator
The Lm317 Is An Adjustable 3-terminal Positive Voltage Regulator Capable Of Supplying In Excess Of
1.5 A Over An Output Voltage Range Of 1.2 V To 37 V. This Voltage Regulator Is Exceptionally Easy To
Use And Requires Only Two External Resistors To Set The Output Voltage. Further, It Employs Internal
Current Limiting, Thermal Shutdown And Safe Area Compensation, Making It Essentially Blow-out Proof.
The LM317 serves a wide variety of
Applications Including Local, On Card Regulation. This Device Can Also Be Used To Make A
Programmable Output Regulator, Or By Connecting A Fixed Resistor Between The Adjustment And Output,
the LM317 can be used as a precision current regulator.
FEATURES
Output Current in Excess of 1.5 A
Output Adjustable between 1.2 V and 37 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting Constant with Temperature
Output Transistor Safe-Area Compensation
Floating Operation for High Voltage
Applications
Available in Surface Mount D2PAK-3, and Standard 3-Lead
Transistor Package
Eliminates Stocking many Fixed Voltages
Pb-Free Packages are Available
Vin Cin* 0.1 mF
LM317 IAdj Adjust
R1 240
+ CO** 1.0 mF
D2PAK-3 D2T SUFFIX
CASE 936
Heatsink Surface (shown As Terminal 4 In Case Outline Drawing) Is Connected To Pin 2.
TO-220 T SUFFIX CASE 221AB
Pin 1. Adjust
2. Vout 3. Vin
Heatsink surface connected to Pin 2.
ORDERING INFORMATION
See Detailed Ordering And Shipping Information In The Package Dimensions Section On Page 10 Of This
data sheet.
DEVICE MARKING INFORMATION
LM317T Datasheet
THREE.TERMINAL ADJUSTABLE POSITIVE VOLTAGE REGULATOR
Download: LM317T Datasheet
LM317T
THREE.TERMINAL ADJUSTABLE POSITIVE VOLTAGE REGULATOR
Order this document by LM317/D
Three-Terminal Adjustable Output Positive Voltage Regulator
The Lm317 Is An Adjustable 3-terminal Positive Voltage Regulator Capable Of Supplying In Excess Of
1.5 A Over An Output Voltage Range Of 1.2 V To 37 V. This Voltage Regulator Is Exceptionally Easy To
Use And Requires Only Two External Resistors To Set The Output Voltage. Further, It Employs Internal
Current Limiting, Thermal Shutdown And Safe Area Compensation, Making It Essentially Blow-out Proof.
The LM317 serves a wide variety of
Applications Including Local, On Card Regulation. This Device Can Also Be Used To Make A
Programmable Output Regulator, Or By Connecting A Fixed Resistor Between The Adjustment And Output,
the LM317 can be used as a precision current regulator.
Output Current in Excess of 1.5 A
Output Adjustable between 1.2 V and 37 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting Constant with Temperature
Output Transistor Safe-Area Compensation
Floating Operation for High Voltage
Applications
Available in Surface Mount D2PAK, and Standard 3-Lead Transistor
Package
Eliminates Stocking many Fixed Voltages
THREE-TERMINAL ADJUSTABLE POSITIVE VOLTAGE REGULATOR
SEMICONDUCTOR TECHNICAL DATA
T SUFFIX PLASTIC PACKAGE
CASE 221A Heatsink surface connected to Pin 2.
Vin Cin* 0.1 F
Standard
Application
LM317 IAdj Adjust
R1 240
+ CO** 1.0 F
+ ) ) ** Cin Is Required If Regulator Is Located An Appreciable Distance From Power Supply
filter.
** CO is not needed for stability, however, it does improve transient response.
1.25 V 1
IAdj R2
Since Iadj Is Controlled To Less Than 100 A, The Error Associated With This Term Is Negligible In
most
LM317T Datasheet
1.2 V To 37 V Adjustable Voltage Regulators
Download: LM317T Datasheet
LM317T
1.2 V To 37 V Adjustable Voltage Regulators
LM117/LM217/LM317
FEATURES
Output voltage range: 1.2 to 37 V
Output current in excess of 1.5 A
0.1% Line and load regulation
Floating operation for high voltages
Complete series of protections: current limiting,
thermal shutdown and SOA control
Description
The Lm117/lm217/lm317 Are Monolithic Integrated Circuit In To-220, To-220fp, To-3 And D2pak Packages
intended for use as positive adjustable voltage regulators.
They Are Designed To Supply More Than 1.5 A Of Load Current With An Output Voltage Adjustable Over A
1.2 to 37 V range.
The Nominal Output Voltage Is Selected By Means Of Only A Resistive Divider, Making The Device
exceptionally easy to use and eliminating the stocking of many fixed regulators.
TO-220 D2PAK
TO-220FP TO-3
Table 1. Device summary
Order codes
TO-220
D2PAK (tape and reel)
TO-220FP
LM217T LM317T
LM217D2T-TR LM317D2T-TR
LM317P
February 2008
Rev 14
TO-3 LM117K LM217K LM317K
LM117/LM217/LM317
LM317T Datasheet
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
Download: LM317T Datasheet
LM317T
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM117/217 LM317
. OUTPUT VOLTAGE RANGE : 1.2 TO 37V . OUTPUT CURRENT IN EXCESS OF 1.5A
(0.5A for TO-39)
. 0.1% LINE AND LOAD REGULATION . FLOATING OPERATION FOR HIGH VOLT-
. Complete Series Of Protections : Current Limiting, Thermal Shutdown And Soa Control
Description
The Lm117/lm217/lm317 Are Monolithic Integrated Circuit In To-220 And To-3 Packages Intended For Use
as positive adjustable voltage regulators.
They Are Designed To Supply More Than 1.5a Of Load Current With An Output Voltage Adjustable Over A
1.2 to 37V range.
The Nominal Output Voltage Is Selected By Means Of Only A Resistive Divider, Making The Device
exceptionally easy to use and eliminating the stocking of many fixed regulators.
ABSOLUTE
MAXIMUM RATING
Symbol
Parameter
Vi-o Input-output Differential Voltage
IO Output Current
Top Operating Junction Temperature for:
Ptot Power Dissipation
LM117 LM217 LM317
TO-220
Intenrally
-55 to 150
-25 to 150
0 to 125
Internally
THERMAL DATA
Rthj-case Thermal Resistance Junction-case
Rthj-amb Thermal Resistance Junction-ambient Max
LM317T Datasheet
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
Download: LM317T Datasheet
LM317T
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM117/217
1.2V TO 37V VOLTAGE REGULATOR
Output Voltage Range : 1.2 To 37v S Output Current In Excess Of 1.5a S 0.1% Line And Load Regulation
s FLOATING OPERATION FOR HIGH
VOLTAGES s COMPLETE SERIES OF PROTECTIONS :
CURRENT LIMITING, THERMAL SHUTDOWN AND SOA CONTROL
Description The Lm117/lm217/lm317 Are Monolithic Integrated Circuit In To-220, To-220fp, To-3 And
D2pak Packages Intended For Use As Positive Adjustable Voltage Regulators. They Are Designed To
Supply More Than 1.5a Of Load Current With An Output Voltage Adjustable Over A 1.2 To 37v Range. The
Nominal Output Voltage Is Selected By Means Of Only A Resistive Divider, Making The Device
exceptionally easy to use and eliminating the stocking of many fixed regulators.
TO-3 TO-220
D2PAK TO-220FP
ABSOLUTE
MAXIMUM RATING
Symbol
Parameter
Vi-o Input-output Differential Voltage
IO Output Current
Top Operating Junction Temperature for: LM117 LM217 LM317
Ptot Power Dissipation
Intenrally
-55 to 150
-25 to 150
0 to 125
Internally
- 65 to 150
THERMAL DATA
Symbol
Parameter
LM317T Datasheet
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
Download: LM317T Datasheet
LM317T
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM117/217 LM317
1.2V TO 37V VOLTAGE REGULATOR
Output Voltage Range: 1.2 To 37v S Output Current In Excess Of 1.5a S 0.1% Line And Load Regulation
s FLOATING OPERATION FOR HIGH
VOLTAGES s COMPLETE SERIES OF PROTECTIONS:
CURRENT LIMITING, THERMAL SHUTDOWN AND SOA CONTROL
Description The Lm117/lm217/lm317 Are Monolithic Integrated Circuit In To-220, To-220fp, To-3 And
D2pak Packages Intended For Use As Positive Adjustable Voltage Regulators. They Are Designed To
Supply More Than 1.5a Of Load Current With An Output Voltage Adjustable Over A 1.2 To 37v Range. The
Nominal Output Voltage Is Selected By Means Of Only A Resistive Divider, Making The Device
exceptionally easy to use and eliminating the stocking of many fixed regulators.
TO-220 D2PAK
TO-220FP TO-3
Figure 1: Schematic Diagram
September 2004
Rev. 10 1/15
LM117/217/317
Table 1: Absolute
MAXIMUM RATINGS
Symbol VI - VO
Parameter Input-reference Differential Voltage Output Current Operating Junction Temperature For:
LM117 LM217 LM317
Internally
-55 to 150
-25 to 150
0 to 125
Internally
-65 to 150
Absolute
Maximum Ratings Are Those Values Beyond Which Damage To The Device May Occur. Functional Operation
under these condition is not implied.
LM317T Datasheet
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
Download: LM317T Datasheet
LM317T
1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR
LM117/217 LM317
1.2V TO 37V VOLTAGE REGULATOR
Output Voltage Range: 1.2 To 37v S Output Current In Excess Of 1.5a S 0.1% Line And Load Regulation
s FLOATING OPERATION FOR HIGH
VOLTAGES s COMPLETE SERIES OF PROTECTIONS:
CURRENT LIMITING, THERMAL SHUTDOWN AND SOA CONTROL
Description The Lm117/lm217/lm317 Are Monolithic Integrated Circuit In To-220, To-220fp, To-3 And
D2pak Packages Intended For Use As Positive Adjustable Voltage Regulators. They Are Designed To
Supply More Than 1.5a Of Load Current With An Output Voltage Adjustable Over A 1.2 To 37v Range. The
Nominal Output Voltage Is Selected By Means Of Only A Resistive Divider, Making The Device
exceptionally easy to use and eliminating the stocking of many fixed regulators.
TO-220 D2PAK
TO-220FP TO-3
SCHEMATIC DIAGRAM
September 2003
LM117/217/317
ABSOLUTE
MAXIMUM RATINGS
Symbol VI-O IO
Parameter Input-output Differential Voltage Output Current Operating Junction Temperature For:
Power Dissipation
Storage Temperature
LM117 LM217 LM317
Internally
-55 to 150
-25 to 150
0 to 125
Internally
-65 to 150
Absolute