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參數(shù)資料
| 型號(hào)： | LM317 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 3-Terminal Positive Voltage Adjustable Regulator |
| 中文描述： | 三端正電壓可調(diào)輸出穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大?。?/td> | 104K |
| 代理商： | LM317 |
LM317
2
Absolute Maximum Ratings
Electrical Characteristics
(V
I
- V
O
= 5V, I
O
= 0.5A, 0
°
C
≤
T
J
≤
+125
°
C
, I
MAX
= 1.5A, P
MAX
= 20W, unless otherwise specified)
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)
Parameter
Input-Output Voltage Differential
Lead Temperature
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Temperature Coefficient of Output Voltage
Symbol
V
I
- V
O
T
LEAD
P
D
T
OPR
T
STG
Vo/
T
Value
40
230
Unit
V
°
C
W
°
C
°
C
%/
°
C
Internally limited
0 ~ +125
-65 ~+125
±0.02
Parameter
Symbol
Conditions
Min
Typ.
Max.
Unit
Line Regulation
Rline
T
A
= +25
°
C
3V
≤
V
I
- V
O
≤
40V
3V
≤
V
I
- V
O
≤
40V
T
A
= +25
°
C, 10mA
≤
I
O
≤
I
MAX
V
O
< 5V
V
O
≥
5V
10mA
≤
I
O
≤
I
MAX
V
O
< 5V
V
O
≥
5V
-
0.01
0.04
%/V
-
0.02
0.07
%/V
mV
%/V
O
Load Regulation
Rload
-
18
0.4
25
0.5
-
40
0.8
46
70
1.5
100
mV
%/V
O
Adjustable Pin Current
I
ADJ
-
-
μ
A
Adjustable Pin Current
Change
I
ADJ
3V
≤
V
I
- V
O
≤
40V
10mA
≤
I
O
≤
I
MAX
P
D
≤
P
MAX
3V
≤
V
IN
- V
O
≤
40V
10mA
≤
I
O
≤
I
MAX
P
D
≤
P
MAX
-
2.0
5
μ
A
Reference Voltage
V
REF
1.20
1.25
1.30
V
Temperature Stability
Minimum Load Current to
Maintain Regulation
ST
T
-
-
0.7
-
%/V
O
L
(MIN)
V
I
- V
O
= 40V
-
3.5
12
mA
Maximum Output Current
I
O(MAX)
V
I
- V
O
≤
15V, P
D
≤
P
MAX
V
I
- V
O
≤
40V, P
D
≤
P
MAX
T
A
=25
°
C
T
A
= +25
°
C, 10Hz
≤
f
≤
10KHz
V
O
= 10V, f = 120Hz
without C
ADJ
C
ADJ
= 10
μ
F
T
A
= +25
°
C for end point
measurements, 1000HR
1.0
2.2
0.3
-
A
RMS Noise, % of V
OUT
e
N
-
0.003
0.01
%/V
O
Ripple Rejection
RR
66
60
75
-
dB
Long-Term Stability, T
J
=
T
HIGH
Thermal Resistance Junction
to Case
ST
-
0.3
1
%
R
θ
JC
-
-
5
-
°
C/W
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