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參數資料
| 型號： | L7800 |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 5.0放大器正電壓穩(wěn)壓器 |
| 文件頁數： | 6/24頁 |
| 文件大小： | 362K |
| 代理商： | L7800 |
* Load and line regulation are specified at constant junction temperature. Changes in V
o
due to heating effects must be taken
into account separately. Pulce testing with low duty cycle is used.
ELECTRICAL CHARACTERISTICS FOR L7812
(refer to the test circuits, T
j
= -55 to 150
o
C,
V
i
= 19V, I
o
= 500 mA, C
i
= 0.33
μ
F, C
o
= 0.1
μ
F unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
o
V
o
Output Voltage
Output Voltage
T
j
= 25
o
C
I
o
= 5 mA to 1 A
V
i
= 15.5 to 27 V
11.5
11.4
12
12
12.5
12.6
V
V
P
o
≤
15 W
V
o
*
Line Regulation
V
i
= 14.5 to 30 V
V
i
= 16 to 22 V
I
o
= 5 to 1500 mA
I
o
= 250 to 750 mA
T
j
= 25
o
C
I
o
= 5 to 1000 mA
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
120
60
100
60
mV
mV
mV
mV
V
o
*
Load Regulation
I
d
I
d
I
d
V
o
T
eN
SVR
Quiescent Current
Quiescent Current Change
6
mA
mA
0.5
Quiescent Current Change
Output Voltage Drift
V
i
= 15 to 30 V
I
o
= 5 mA
0.8
mA
mV/
o
C
1.5
Output Noise Voltage
Supply Voltage Rejection
B = 10Hz to 100KHz
V
i
= 15 to 25 V
I
o
= 1 A
f = 1 KHz
T
j
= 25
o
C
f = 120 Hz
T
j
= 25
o
C
40
μ
V/V
O
dB
61
V
d
R
o
Dropout Voltage
Output Resistance
2
2.5
V
18
m
A
A
I
sc
I
scp
Short Circuit Current
Short Circuit Peak Current
V
i
= 35 V
T
j
= 25
o
C
T
j
= 25
o
C
0.75
2.2
1.2
3.3
1.3
ELECTRICAL CHARACTERISTICS FOR L7808
(refer to the test circuits, T
j
= -55 to 150
o
C,
V
i
= 14V, I
o
= 500 mA, C
i
= 0.33
μ
F, C
o
= 0.1
μ
F unless otherwise specified)
Symbol
V
o
Parameter
Test Conditions
Min.
7.7
Typ.
8
Max.
8.3
Unit
V
Output Voltage
T
j
= 25
o
C
V
o
Output Voltage
I
o
= 5 mA to 1 A
V
i
= 11.5 to 23 V
V
i
= 10.5 to 25 V
V
i
= 11 to 17 V
P
o
≤
15 W
7.6
8
8.4
V
V
o
*
Line Regulation
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
80
40
mV
mV
V
o
*
Load Regulation
I
o
= 5 to 1500 mA
I
o
= 250 to 750 mA
T
j
= 25
o
C
100
40
6
mV
mV
mA
I
d
I
d
I
d
V
o
T
eN
Quiescent Current
Quiescent Current Change
Quiescent Current Change
I
o
= 5 to 1000 mA
V
i
= 11.5 to 25 V
0.5
0.8
mA
mA
mV/
o
C
Output Voltage Drift
I
o
= 5 mA
1
Output Noise Voltage
B = 10Hz to 100KHz
T
j
= 25
o
C
f = 120 Hz
40
μ
V/V
O
dB
V
m
A
SVR
V
d
Supply Voltage Rejection
Dropout Voltage
V
i
= 11.5 to 21.5 V
I
o
= 1 A
62
T
j
= 25
o
C
2
2.5
R
o
I
sc
Output Resistance
Short Circuit Current
f = 1 KHz
V
i
= 35 V
T
j
= 25
o
C
16
0.75
T
j
= 25
o
C
1.2
I
scp
Short Circuit Peak Current
1.3
2.2
3.3
A
L7800 SERIES
6/24
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