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參數(shù)資料
| 型號： | LM7800C |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Series 3-Terminal Positive Regulators |
| 中文描述： | 系列三端穩(wěn)壓器正 |
| 文件頁數(shù)： | 5/15頁 |
| 文件大?。?/td> | 512K |
| 代理商： | LM7800C |
LM7808C
Electrical Characteristics
0C
≤
T
J
≤
+150C, V
I
= 14V, I
O
= 500 mA, C
I
= 0.33 μF, C
O
= 0.1 μF, unless otherwise specified
Symbol
Parameter
Conditions
(Note 6)
LM7808C
Typ
8.0
6.0
2.0
12
4.0
Units
Min
7.7
Max
8.3
160
80
160
80
V
O
V
O
Output Voltage
Line Regulation
T
J
= 25C
T
J
= 25C
V
10.5V
≤
V
I
≤
25V
11.0V
≤
V
I
≤
17V
5.0 mA
≤
I
O
≤
1.5A
250 mA
≤
I
O
≤
750
mA
mV
V
O
Load Regulation
T
J
= 25C
mV
V
O
I
Q
Output Voltage
Quiescent
Current
Quiescent
11.5V
≤
V
I
≤
23V, 5.0 mA
≤
I
O
≤
1.0A, P
≤
15W
T
J
= 25C
7.6
8.4
8.0
V
4.3
mA
I
Q
With Line
With
Load
11.5V
≤
V
I
≤
25V
5.0 mA
≤
I
O
≤
1.0A
1.0
0.5
mA
Current Change
V
N
V
I
/
V
O
V
DO
R
O
I
OS
I
PK
V
O
/
T
Noise
Ripple Rejection
Dropout Voltage
Output Resistance
Output Short Circuit Current
Peak Output Current
Average Temperature
Coefficient of Output Voltage
T
A
= 25C, 10 Hz
≤
f
≤
100 kHz
f = 120 Hz, I
O
= 350 mA, T
J
= 25C
I
O
= 1.0A, T
J
= 25C
f = 1.0 kHz
T
J
= 25C, V
I
= 35V
T
J
= 25C
I
O
= 5.0 mA
52
72
2.0
16
0.45
2.2
0.8
μV
dB
V
m
A
A
mV/C
56
Note 6:
All characteristics are measured with a 0.22 μF capacitor from input to ground and a 0.1 μF capacitor from output to ground. All characteristics except noise
voltage and ripple rejection ratio are measured using pulse techniques (t
w
≤
10 ms, duty cycle
≤
5%). Output voltage changes due to changes in internal temperature
must be taken into account separately.
Typical Performance Characteristics
Maximum Average Power
Dissipation
DS007781-22
Maximum Average Power
Dissipation
DS007781-23
Maximum Power
Dissipation (TO-263)
(See Note 2)
DS007781-24
www.national.com
5
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