LM317
Rev.H Oct.-2018
描述
/
Descriptions
DATA SHEET
TO-220
塑封封装电压调整器。Voltage
Regulator in a TO-220 Plastic Package.
特征
/ Features
三端稳压调整器，输出电流超过
1.5A,稳压输出电压在 1.2½37V
之间可调。
3-Terminal regulators ,output current in excess of 1.5 A, output voltage adjustable over a 1.2-37V.
用途
/
Applications
电压调整器。
Voltage Regulator.
内部等效电路
/
应用电路
Equivalent Circuit or Application Circuit
引脚排列
/ Pinning
12
3
PIN1：ADJ
印章代码
PIN 2：OUT
PIN 3：IN
/ Marking
见印章说明。See
Marking Instructions
http://www.fsbrec.com
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LM317
Rev.H Oct.-2018
极限参数
DATA SHEET
/ Absolute Maximum Ratings(Ta=25℃)
参数
Parameter
符号
Symbol
V
i-o
I
O
T
J
P
tot
T
stg
数值
Rating
40
Internally
Limited
0½125
Internally
Limited
-55½150
单½
Unit
V
A
℃
W
℃
Input - Output Voltage Difference
Output Current
Operating Junction Temperature Range
Power Dissipation
Storage temperature range
电性½参数
/ Electrical Characteristics(Ta=25℃)
符号
Symbol
△
参数
Parameter
Line regulation
测试条件
Test Conditions
V
i
-V
o
=3to40V
V
i
-V
o
=3to40V
V
o
≤5V
I
o
=10mAtoI
MAX
V
o
≤5V
I
o
=10mAtoI
MAX
V
o
≥5V
I
o
=10mAtoI
MAX
V
o
≥5V
I
o
=10mAtoI
MAX
V
i
-V
o
=2.5to40V
I
o
=10mAtoI
MAX
V
i
-V
o
=2.5to40V
I
o
=10mAtoI
MAX
T
J
=25℃
T
J
=25℃
最小值
Min
典型值 最大值 单½
Typ
Max
Unit
0.01
0.02
5
20
0.04
0.07
25
70
0.5
1.5
100
5
1.3
%/V
%/V
mV
mV
%
%
μA
μA
V
%
10
mA
A
A
%
dB
dB
V
o
Load Regulation
△
V
o
T
J
=25℃
0.1
0.3
50
0.2
Adjustable Pin Current
Adjustable Pin Current
Change
Reference Voltage
Line Regulation
Minimum Load Current for
Regulation
Maximum Output Current
RMS Noise vs. %of VOUT
Ripple Rejection
I
ADJ
△
I
ADJ
V
REF
△V
O
V
O
I
o(min)
I
O(max)
e
N
SVR
P
D
≤P
MAX
1.2
1.25
1
V
i
-V
o
=40V
V
i
-V
o
≤15V
V
i
-V
o
=40V
T
J
=25℃
P
D
＜P
MAX
P
D
＜P
MAX
1.5
3.5
2.2
0.4
0.003
65
66
80
B=10Hzto10KHz T
J
=25℃
T
J
=25℃
C
ADJ
=0
f=120Hz
C
ADJ
=10μF
http://www.fsbrec.com
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LM317
Rev.H Oct.-2018
电参数曲线图
/ Electrical Characteristic Curve
DATA SHEET
http://www.fsbrec.com
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7
LM317
Rev.H Oct.-2018
内部电路图
/
Internal circuit diagram
DATA SHEET
http://www.fsbrec.com
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7
LM317
Rev.H Oct.-2018
外½尺寸图
/ Package Dimensions
DATA SHEET
http://www.fsbrec.com
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