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參數(shù)資料
| 型號： | L7800AC_SERIES |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 362K |
| 代理商： | L7800AC_SERIES |
* 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 L7820C
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= 28V, 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
= 23 to 35 V
19.2
19
20
20
20.8
21
V
V
P
o
≤
15 W
V
o
*
Line Regulation
V
i
= 22.5 to 35 V
V
i
= 26 to 32 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
400
200
400
200
mV
mV
mV
mV
V
o
*
Load Regulation
I
d
I
d
I
d
V
o
T
eN
SVR
Quiescent Current
Quiescent Current Change
8
mA
mA
0.5
Quiescent Current Change
Output Voltage Drift
V
i
= 23 to 35 V
I
o
= 5 mA
1
mA
mV/
o
C
-1
Output Noise Voltage
Supply Voltage Rejection
B = 10Hz to 100KHz
V
i
= 24 to 35 V
I
o
= 1 A
f = 1 KHz
T
j
= 25
o
C
f = 120 Hz
T
j
= 25
o
C
150
μ
V
dB
52
V
d
R
o
Dropout Voltage
Output Resistance
2
V
24
m
mA
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
180
2.1
ELECTRICAL CHARACTERISTICS FOR L7818C
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= 26V, 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.
17.3
Typ.
18
Max.
18.7
Unit
V
Output Voltage
T
j
= 25
o
C
V
o
Output Voltage
I
o
= 5 mA to 1 A
V
i
= 21 to 33 V
V
i
= 21 to 33 V
V
i
= 24 to 30 V
P
o
≤
15 W
17.1
18
18.9
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
360
180
mV
mV
V
o
*
Load Regulation
I
o
= 5 to 1500 mA
I
o
= 250 to 750 mA
T
j
= 25
o
C
360
180
8
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
= 21 to 33 V
0.5
1
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
T
j
= 25
o
C
110
μ
V
dB
V
m
mA
SVR
V
d
Supply Voltage Rejection
Dropout Voltage
V
i
= 22 to 32 V
I
o
= 1 A
53
2
R
o
I
sc
Output Resistance
Short Circuit Current
f = 1 KHz
V
i
= 35 V
T
j
= 25
o
C
22
200
T
j
= 25
o
C
I
scp
Short Circuit Peak Current
2.1
A
L7800 SERIES
13/24
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