TIGER ELECTRONIC CO.,LTD
Product specification
3-Terminal Positive Adjustable Regulator
Features
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
O
LM317
Description
This monolithic integrated circuit is an adjustable
3-terminal positive voltage regulator designed to
supply more than 1.5A of load current with
anoutput voltage adjustable over a 1.2 to 37V.
It employs internal current limiting, thermal
shut-down and safe area compensation.
Absolute Maximum Ratings ( Ta = 25 C)
Parameter
Input-Output Voltage Differential
Lead Temperature
Power Dissipation
Operating Junction Temperature
Range
Storage Temperature Range
Temperature Coefficient of Output
Voltage
Symbol
V
I
-V
O
TLEAD
Typ
40
230
Internally li
mited
0~125
-65~150
0.02
Unit
V
o
C
P
D
T
j
T
STG
Vo/ T
W
o
C
1 2 3
o
C
o
%/ C
TO-220
1. Adj 2. Output 3. Input
Electrical Characteristics ( Ta = 25
O
C)
(V
I
- V
O
= 5 V, I
O
= 0.5 A, 0 C
o
T
J
+ 125 C, I
MAX
= 1.5A,P
DMAX
= 20W, unless otherwise specified)
o
Parameter
Line Regulation (Note1)
Symbol
Rline
Test Conditions
TA = +25
o
C
3V V
I
- V
O
3V V
I
- V
O
40V
40V
I
O
I
MAX
Min
-
-
-
Typ
0.01
0.02
18
0.4
40
0.8
46
2.0
1.25
2.0
0.3
60
75
Max
0.04
0.07
25
0.5
70
1.5
100
5
1.30
Unit
%/V
Load Regulation (Note1)
Rload
TA = +25
o
C, 10mA
V
O
< 5V
V
O
5V
10mA I
O
I
MAX
V
O
< 5V
V
O
5V
mV % / V
O
-
-
P
MAX
-
1.20
Adjustable Pin Current
Adjustable Pin Current Change
Reference Voltage
I
ADJ
I
ADJ
V
REF
I
O(MAX)
RR
-
3V V
I
- V
O
40V
10mA I
O
I
MAX
P
D
3V V
IN
- V
O
40V
10mA I
O
I
MAX
P
D
P
MAX
V
I
- V
O
V
I
- V
O
15V, P
D
40V, P
D
P
MAX
P
MAX
A
A
V
Maximum Output Current
1.0
-
A
Ripple Rejection
V
O
= 10V, f = 120Hz
without CADJ
C
ADJ
= 10 F (Note2)
66
-
dB
Note:
1. Load and line regulation are specified at constant junction temperature. Change in V
D
due to heating effects must be taken
into account separately. Pulse testing with low duty is used. (P
MAX
= 20W)
2. C
ADJ
, when used, is connected between the adjustment pin and ground.
TGS [ Tiger Electronic Co.,Ltd ]
