LM317 3-pin and 4-pin 1.5-A adjustable positive voltage regulator | TI.com

LM317 (ACTIVE) 3-pin and 4-pin 1.5-A adjustable positive voltage regulator

3-pin and 4-pin 1.5-A adjustable positive voltage regulator - LM317
Datasheet
LM317 3-Terminal Adjustable Regulator datasheet (Rev. X)
 

Recommended alternative parts

  • TLV767  -  A high-accuracy, 1-A LDO regulator with low IQ & foldback current limit
  • TLV760  -  A wide input (30 V) low current (100 mA) linear regulator
  • LM317HV  -  A wide input (60 V), 1.5-A single-channel linear regulator
  • LM337  -  An adjustable negative voltage (down to –37 V), 1.5-A linear regulator
  • LM317MQ  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 

Description

The LM317 device 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 requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%. It includes current limiting, thermal overload protection, and safe operating area protection. Overload protection remains functional even if the ADJUST terminal is disconnected.

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
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WEBENCH® Designer LM317

  Min   Max Range
Vin –  V 4.2 to 40.0V
Vout  V 1.3 to 37V
Iout  A ≤ 1.5A
Ambient Temp  °C -40 to 125°C

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Parametrics

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Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Noise (uVrms) Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
LM317 Order now Adjustable Output     1.5     40     3     37     1.25     DDPAK/TO-263 | 3
SOT-223 | 4
TO-220 | 3
TO-220 | 3    		     1     0 to 125     24     38     0.18 | 1ku     Catalog     38     5     2000     3.5     3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
4SOT-223: 46 mm2: 7 x 6.5 (SOT-223 | 4)
3TO-220: 87 mm2: 8.59 x 10.16 (TO-220 | 3)
3TO-220: 88 mm2: 8.7 x 10.16 (TO-220 | 3)    
LM317L Order now Adjustable Output     0.1     35     5     32     1.2     SOIC | 8
SOT-89 | 3
TO-92 | 3
TSSOP | 8    		     1     -40 to 125
0 to 125    		 52     30     0.09 | 1ku     Catalog     38     4     2000     1.5     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
3SOT-89: 18 mm2: 4.095 x 4.5 (SOT-89 | 3)
3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
LM317M Order now Adjustable Output     0.5     40     3     37     1.2     SOT-223 | 4
TO-252 | 3    		     1     -40 to 125     60     38     0.26 | 1ku     Catalog     22     3     2000     3.5     4SOT-223: 46 mm2: 7 x 6.5 (SOT-223 | 4)
3TO-252: 67 mm2: 10.11 x 6.6 (TO-252 | 3)