UNISONIC TECHNOLOGIES CO., LTD
LM317
HIGH CURRENT 1.3V TO 37V
ADJUSTABLE VOLTAGE
REGULATOR
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
1
TO-220
1
TO-220F
1
TO-263
1
TO-263-3
The UTC
LM317
is an adjustable 3-terminal positive voltage
regulator, designed to supply 1A of output current with voltage
adjustable from 1.3V ~ 37V.
1
FEATURES
1
TO-252
SOT-223
*Output voltage adjustable from 1.3V ~ 37V
*Output current in excess of 1A
*Internal short circuit protection
*Internal over temperature protection
*Output transistor safe area compensation
SOP-8
ORDERING INFORMATION
Package
SOT-223
TO-220
TO-220F
TO-252
TO-263
TO-263
TO-263-3
TO-263-3
SOP-8
1
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
I
2
O
O
O
O
O
O
O
O
O
Pin Assignment
3
4
5
6
I
-
-
-
I
-
-
-
I
-
-
-
I
-
-
-
I
-
-
-
I
-
-
-
I
-
-
-
I
-
-
-
O ADJ NC O
7
-
-
-
-
-
-
-
-
O
8
-
-
-
-
-
-
-
-
NC
Packing
Tape Reel
Tube
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tape Reel
Ordering Number
Lead Free
Halogen Free
LM317K-AA3-R
LM317G-AA3-R
LM317K-TA3-T
LM317G-TA3-T
LM317K-TF3-T
LM317G-TF3-T
LM317K-TN3-R
LM317G-TN3-R
LM317K-TQ2-T
LM317G-TQ2-T
LM317K-TQ2-R
LM317G-TQ2-R
LM317K-TQ3-T
LM317G-TQ3-T
LM317K-TQ3-R
LM317G-TQ3-R
LM317K-S08-R
LM317G-S08-R
Note: Pin Assignment: I: V
IN
O: V
OUT
www.unisonic.com.tw
Copyright © 2018 Unisonic Technologies Co., Ltd
1 of 5
QW-R101-009.R
LM317
MARKING
PACKAGE
SOT-223
TO-220
TO-220F
TO-252
TO-263
TO-263-3
LINEAR INTEGRATED CIRCUIT
MARKING
SOP-8
BLOCK DIAGRAM
INPUT
V
REF
PROTECTION
CIRCUIT
V
ADJ
OUTPUT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 5
QW-R101-009.R
LM317
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(T
A
=25C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Input - Output Voltage Difference
V
IN
-V
OUT
40
V
Power Dissipation
P
D
Internal limited
Junction Temperature
T
J
+125
C
Operating Temperature
T
OPR
-40 ~ +85
C
Storage Temperature
T
STG
-40 ~ +150
C
Note: Absolute maximum ratings are stress ratings only and functional device operation is not implied. The device
could be damaged beyond Absolute maximum ratings.
THERMAL DATA
SYMBOL
RATINGS
112
65
165
190
12
5
θ
JC
7.8
23
45
C/W
UNIT
PARAMETER
TO-252
TO-220/TO-220F
TO-263/TO-263-3
Junction-to-Ambient
SOT-223
SOP-8
TO-252
TO-220/TO-263
TO-263-3
Junction-to-Case
TO-220F
SOT-223
SOP-8
θ
JA
C/W
ELECTRICAL CHARACTERISTICS
MIN
TYP MAX
0.01 0.04
5
25
0.1
0.5
50
100
0.2
1.20
1.25
0.7
3.5
0.3
0.003
65
80
5
1.30
10
UNIT
%/V
mV
%
μA
μA
V
%/V
OUT
mA
A
%/V
OUT
dB
(V
IN
-V
OUT
=5V, I
OUT
=10mA, T
A
=25C, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
Line Regulation
V
OUT
/V
OUT
3V≦V
IN
-V
OUT
≦40V
V
OUT
≦5V
Load Regulation
V
OUT
10mA≦I
OUT
≦1A
V
OUT
≧5V
Adjustable Pin Current
Adjustable Pin Current Change
Reference Voltage
Temperature Stability
Minimum Load Current for Regulation
Maximum Output Current
RMS Noise vs. %of V
OUT
Ripple Rejection
I
ADJ
I
ADJ
V
REF
I
L(MIN)
I
O(MAX)
eN
RR
3V≦V
IN
-V
OUT
≦40V,
10mA≦I
OUT
≦1A,
P
D
≦20W
3V≦V
IN
-V
OUT
≦40V,
10mA≦I
OUT
≦1A,
P
D
≦20W
T
MIN
≦T
J
≦T
MAX
V
IN
-V
OUT
=40V
V
IN
-V
OUT
=40V, P
D
≦
20W
10H
Z
≦
f
≦
10KH
Z
V
OUT
=10V,f=120H
Z
C
ADJ
=0
C
ADJ
=10μF
0.2
66
Note: C
ADJ
is connected between Adjust pin and Ground.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 5
QW-R101-009.R
LM317
APPLICATION CIRCUITS
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 5
QW-R101-009.R
LM317
TYPICAL CHARACTERISTICS
Load Regulation vs. temperature
0.2
LINEAR INTEGRATED CIRCUIT
Adjustment Current vs. Temperature
60
Output Voltage Deviation,
∆V
OUT
(%)
Adjustment Current, I
ADJ
(μA)
125
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0
25
50
75
100
V
IN
=15V
V
OUT
=10V
55
50
45
40
35
-50
-25
0
25
50
75
100
125
Temperature
Temperature
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all UTC products described or contained herein.
UTC products are not designed for use in life support appliances, devices or systems where malfunction
of these products can be reasonably expected to result in personal injury. Reproduction in whole or in
part is prohibited without the prior written consent of the copyright owner. UTC reserves the right to
make changes to information published in this document, including without limitation specifications and
product descriptions, at any time and without notice. This document supersedes and replaces all
information supplied prior to the publication hereof.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 5
QW-R101-009.R
微控制器 MCU
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