TAITRON LM317MC-XX-AR Adustable positive voltage regulator Datasheet

Adjustable Positive
Voltage Regulator
LM317
Adustable Positive Voltage Regulator
General Description
• The LM317 is an adjustable 3-terminal positive voltage
regulator, designed to supply 1A of output current with
. voltage adjustable from 1.3V ~ 37V.
SOT-223
D-PACK
(TO-252)
• The LM317 is available in SOT-223, D-PACK, TO-220
and D2-PACK packages.
TO-220
Features
•
•
•
•
Applications
Output Voltage adjustable from 1.3V ~ 37V
Output current in excess of 1A
Internal short circuit protection
Internal over temperature protection
• Output transistors safe area compensation
• RoHS Compliance
Ordering Information
• PC Motherboard
• LCD Monitor
• Graphic Card
•
•
•
•
TAITRON COMPONENTS INCORPORATED www.taitroncomponents.com
Tel:
Fax:
(800)-TAITRON (800)-824-8766
(800)-TAITFAX (800)-824-8329
D2-PACK
(TO-263)
(661)-257-6060
(661)-257-6415
DVD Player
Network Interface Card/Switch
Telecom Equipment
Printer and other Peripheral Equipment
Rev. A/DX 2007-06-04
Page 1 of 8
Adjustable Positive Voltage Regulator
LM317
Pin Configuration
Outline: H
SOT-223
Outline: T
TO-220
Outline: D
D-PACK (TO-252)
Outline: MC
D2-PACK (TO-263)
Block Diagram
Rev. A/DX 2007-06-04
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Page 2 of 8
Adjustable Positive Voltage Regulator
LM317
Absolute Maximum Ratings (Ta=25° C, unless otherwise specified)
Symbol
Description
Ratings
Unit
VIN-VOUT
IO
Input - Output Voltage Differential
Max. Output Current
40
1.0
V
A
TJ
Operating Junction Temperature
125
°C
TOPR
TSTG
Operating Temperature Range
Storage Temperature Range
-40 ~ 85
-40 ~ 150
°C
°C
PD
Power Dissipation
Internal limited
mW
RthJC
Thermal Resistance
Junction-Case
RthJA
Thermal Resistance
Junction-Ambient
T: TO-220
MC: D2-PACK (TO-263)
D: D-PACK (TO-252)
H: SOT-223
T: TO-220
MC: D2-PACK (TO-263)
D: D-PACK (TO-252)
H: SOT-223
5
5
12
23
54
64
112
165
° C/W
° C/W
Note: Absolute maximum ratings are stress ratings only and functional device operation is not
implied. The device could be damaged beyond Absolute maximum ratings.
Electrical Characteristics
(VIN-VOUT=5V, IOUT=10mA, TA=25ºC, unless otherwise specified)
Symbol
Description
LM317
Unit
Conditions
0.04
%/V
3V≤VIN-VOUT≤40V
5
25
mV
10mA≤IOUT≤1A, VOUT≤5V
-
0.1
0.5
mV
10mA≤IOUT≤1A, VOUT≥5V
Adjustable Pin Current
-
50
100
µA
-
∆IADJ
Adjustable Pin Current Change
-
0.2
5
µA
VREF
Reference Input Voltage
1.20
1.25
1.30
V
-
0.7
-
%/VOUT
∆VOUT/VOUT
Line Regulation
∆VOUT
Load Regulation
IADJ
-
Temperature Stability
Min.
Typ.
Max.
-
0.01
-
3V≤VIN-VOUT≤40V,
10mA≤IOUT≤1A, PD≤20W
3V≤VIN-VOUT≤40V,
10mA≤IOUT≤1A, PD≤20W
TMIN≤TJ≤TMAX
Rev. A/DX 2007-06-04
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Page 3 of 8
Adjustable Positive Voltage Regulator
LM317
Symbol
Description
LM317
Min.
Typ.
Max.
Unit
Conditions
IL(MIN)
Minimum Load Current for
Regulation
-
3.5
10
mA
VIN-VOUT=40V
IO(MAX)
Maximum Output Current
0.3
0.4
-
A
VIN-VOUT=40V, PD≤20W
eN
RMS Noise vs. %of VOUT
-
0.003
-
%/VOUT
10Hz≤f≤10KHz
RR
Ripple
Rejection
CADJ=0
-
65
-
CADJ=10µF
66
80
-
dB
VOUT=10V, f=120Hz
Note: CADJ is connected between Adjust pin and Ground.
Fig.2- Adjustment Current vs. Temperature
Fig.1- Load Regulation vs. Temperature
IADJ, Adjustment Current (µA)
∆VOUT, Output Voltage Deviation (%)
Typical Characteristics Curves
Temperature (° C)
Temperature (° C)
Fig.4- Minimum Operating Current
IOUT, Output Current (mA)
IOUT, Min. Output Current (mA)
Fig.3- Current Limit
VIN-VOUT (V)
VIN-VOUT (V)
Rev. A/DX 2007-06-04
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Page 4 of 8
Adjustable Positive Voltage Regulator
LM317
Typical Application
Fig.5-Programmable Voltage Regulator
Fig.7- Soft Start Application
Fig.6- Regulator with On-off Control
Fig.8- Constant Current Application
Rev. A/DX 2007-06-04
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Page 5 of 8
Adjustable Positive Voltage Regulator
LM317
Dimensions in inches (mm)
SOT-223
D-PACK
(TO-252)
Rev. A/DX 2007-06-04
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Page 6 of 8
Adjustable Positive Voltage Regulator
LM317
TO-220
D2-PACK
(TO-263)
Rev. A/DX 2007-06-04
www.taitroncomponents.com
Page 7 of 8
Adjustable Positive Voltage Regulator
LM317
How to contact us:
US HEADQUARTERS
28040 WEST HARRISON PARKAWAY, VALENCIA, CA 91355-4162
Tel: (800) TAITRON (800) 824-8766 (661) 257-6060
Fax: (800) TAITFAX (800) 824-8329 (661) 257-6415
Email: [email protected]
Http://www.taitroncomponents.com
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42970 MEXICO
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CROSS REGION PLAZA, 899 LINGLING ROAD, SUITE 18C, SHANGHAI, 200030, CHINA
Tel: +86-21-5424-9942
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Rev. A/DX 2007-06-04
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Page 8 of 8
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