3-TERMINAL 1.5A POSITIVE ADJUSTABLE REGULATOR This monolithic int

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3-TERMINAL 1.5A POSITIVE ADJUSTABLE REGULATOR This monolithic int

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ADJUSTABLE VOLTAGE REGULATOR (POSITIVE)
3-TERMINAL 1.5A POSITIVE ADJUSTABLE REGULATOR
This monolithic integrated circuit adjustable 3-terminal positive voltage regulator designed supply more than 1.5A load current with output voltage adjustable over 37V. employs internal current limiting, thermal shut-down safe area compensation.
LM317T
TO-220
FEATURES
Output current Excess 1.5A Output Adjustable Between 1.2V Internal Thermal-Overload Protection Internal Short-Circuit Current-Limiting Output Transistor Safe-Area Compensation Moisture Sensitivity Level
ORDERING INFORMATION Device Marking Package LM317T LM317 TO-220 Output Input
BLOCK DIAGRAM
2008
ADJUSTABLE VOLTAGE REGULATOR (POSITIVE)
TYPICAL APPLICATIONS
Fig.5 Programmable Regulator
LM317T
required when regulator located appreciable distance from power supply filter. needed stability, however, does improve transient response. Since lADJ controlled less than 100, error associated with this term negligible most applications.
ADJUSTABLE VOLTAGE REGULATOR (POSITIVE)
ABSOLUTE MAXIMUM RATINGS (TA=25, unless otherwise specified)
Characteristic Input-output Voltage Differential Lead Temperature Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VI-Vo TLEAD TOPR TSTG Value Internally limited +125 +125
LM317T
Unit
ELECTRICAL CHARACTERISTICS
(VI-Vo=5V, Io=0.5A, 0TJ125, IMAX=1.5A, PMAX=20W, unless otherwise specified) Characteristic Line Regulation Symbol Test condition TA=0 3VVI-Vo40V 3VVI-Vo40V TA=25, 10IoIMAX Vo5V Vo5V 10IoIMAX Vo5V Vo5V 3VVI-Vo40V 10IoIMAX PPMAX 3VVIN-VOUT40V 10IoIMAX PDPMAX VI-Vo=40V VI-Vo15V, PDPMAX VI-Vo40V, PDPMAX, TA=25 TA=25, 10Hzf10KHz Vo=10V, f=120Hz without CADJ CADJ=10 TA=25, point measurements, 1000HR 0.156 Min. Typ. 0.01 0.02 Max. 0.04 0.07 Unit %/Vo %/Vo
Load Regulation
Adjustable Current Adjustable Current Change
IADJ IADJ
Reference Voltage Temperature Stability Minimum Load Current Maintain Regulation Maximum Output Current Noise, VOUT Ripple Rejection Long-Term Stability, TJ=THIGH Thermal Resistance Junction Case
VREF L(MIN) Io(MAX)
1.20
1.25 0.003
1.30
%/Vo
0.01
%/Vo
Load line regulation specified constant junction temperature. Change heating effects must taken into account separately. Pulse testing with duty used.(PMAX=20W)

3-TERMINAL 1.5A POSITIVE ADJUSTABLE REGULATOR This monolithic int

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