Product Summary

The LM317 is an adjustable 3-terminal positive voltage regulator. It is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. The LM317 is 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 LM317 is packaged in standard transistor packages which are easily mounted and handled.

Parametrics

LM317 absolute maximum ratings: (1)Power Dissipation: Internally Limited; (2)Input-Output Voltage Differential: +40V, -0.3V; (3)Storage Temperature: -65 to +150℃; (4)Lead Temperature, Metal Package (Soldering, 10 seconds): 300℃; (5)ESD Tolerance: 3 kV.

Features

LM317 features: (1)Guaranteed 1% output voltage tolerance; (2)Guaranteed max. 0.01%/V line regulation; (3)Guaranteed max. 0.3% load regulation; (4)Guaranteed 1.5A output current; (5)Adjustable output down to 1.2V; (6)Current limit constant with temperature; (7)P+ Product Enhancement tested; (8)80 dB ripple rejection; (9)Output is short-circuit protected.

Diagrams

LM317 typical applications

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM317
LM317

Other


Data Sheet

Negotiable 
LM317A
LM317A

Other


Data Sheet

Negotiable 
LM317AEMP
LM317AEMP

National Semiconductor (TI)

Linear Regulators - Standard

Data Sheet

0-1000: $0.49
LM317AEMP/NOPB
LM317AEMP/NOPB

National Semiconductor (TI)

Linear Regulators - Standard 3-TERMINAL ADJ REG

Data Sheet

0-1: $1.13
1-25: $0.91
25-100: $0.82
100-250: $0.73
LM317AEMPX
LM317AEMPX

National Semiconductor (TI)

Linear Regulators - Standard

Data Sheet

0-2000: $0.53
2000-4000: $0.49
4000-6000: $0.47
6000-10000: $0.46
LM317AEMPX/NOPB
LM317AEMPX/NOPB

National Semiconductor (TI)

Linear Regulators - Standard 3-TERMINAL ADJ REG

Data Sheet

0-1: $1.13
1-25: $0.91
25-100: $0.82
100-250: $0.73
LM317AH
LM317AH

National Semiconductor (TI)

Linear Regulators - Standard

Data Sheet

0-500: $4.21
500-1000: $3.67
LM317AH/NOPB
LM317AH/NOPB

National Semiconductor (TI)

Linear Regulators - Standard

Data Sheet

0-1: $6.80
1-25: $5.57
25-100: $5.03
100-250: $4.62