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
 

Recommended alternative parts

  • 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

View more

Parametrics Compare all products in Linear regulators (LDO)

 
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
Output capacitor type
PSRR @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
LM317 LM317L LM317M
Adjustable Output     Adjustable Output     Adjustable Output    
1.5     0.1     0.5    
40     35     40    
3     5     3    
37     32     37    
1.25     1.2     1.2    
DDPAK/TO-263 | 3
SOT-223 | 4
TO-220 | 3    
SOIC | 8
SOT-89 | 3
TO-92 | 3
TSSOP | 8    
SOT-223 | 4
TO-252 | 3    
N/A     N/A     N/A    
1     1     1    
0 to 125     -40 to 125
0 to 125    
-40 to 125    
24     52     60    
38     30     38    
0.18 | 1ku     0.09 | 1ku     0.26 | 1ku    
Catalog     Catalog     Catalog    
Non-Ceramic     Cap Free
Non-Ceramic    
Cap Free
Non-Ceramic    
38     38     22    
5     3     3    
2000     2000     2000    
3.5     1.5     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)
See datasheet (TO-220)    
8SOIC: 29 mm2: 6 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)    
4SOT-223: 46 mm2: 7 x 6.5 (SOT-223 | 4)
3TO-252: 67 mm2: 10.11 x 6.6 (TO-252 | 3)    

Design tool

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

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


Footprint BOM Cost Efficiency


Preview design