Revised June 2005 LM317
3-Terminal Positive Adjustable Regulator
General Description Features 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. ■ 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
■ D2 PAK Package Ordering Code:
Product Number Package Operating Temperature LM317T TO-220 0qC to 125qC LM317D2TXM D2 PAK 0qC to 125qC Connection Diagrams Internal Block Diagram © 2005 Fairchild Semiconductor Corporation DS400281 www.fairchildsemi.com LM317 3-Terminal Positive Adjustable Regulator March 2000 LM317 Absolute Maximum Ratings
Symbol Value Input-Output Voltage Differential Parameter VI -VO 40 V Lead Temperature TLEAD 230 qC Power Dissipation PD Internally limited W Operating Junction Temperature Range Tj 0 a 125 TSTG 65 a 125
r0.02 qC
qC
% / qC Storage Temperature Range 'VO/'T Temperature Coefficient of Output Voltage Unit Note 1: Absolute Maximum Ratings: are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at
these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended
Operating Conditions" table will define the conditions for actual device operation. Electrical Characteristic
(VI -VO 5V, IO 0.5A, 0qC d TJ d 125qC, IMAX Parameter
Line Regulation (Note 2) 1.5A, PDMAX Symbol
Rline 20W, unless otherwise specified)
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