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參數(shù)資料
| 型號： | L7818AC |
| 廠商： | 意法半導體 |
| 英文描述： | PRECISION 1A REGULATORS |
| 中文描述： | 精密1A條調(diào)節(jié)器 |
| 文件頁數(shù)： | 14/34頁 |
| 文件大?。?/td> | 1801K |
| 代理商： | L7818AC |
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L7800 SERIES
14/34
Table 21: Electrical Characteristics Of L7818C
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= 26V,
I
O
= 500 mA, C
I
= 0.33 μF, C
O
= 0.1 μF unless otherwise specified).
Symbol
Parameter
Test Conditions
(*) Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
Table 22: Electrical Characteristics Of L7820C
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= 28V,
I
O
= 500 mA, C
I
= 0.33 μF, C
O
= 0.1 μF unless otherwise specified).
Symbol
Parameter
Test Conditions
(*) Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
Min.
Typ.
Max.
Unit
V
O
V
O
Output Voltage
Output Voltage
T
J
= 25°C
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
I
O
= 5 mA to 1.5 A
I
O
= 250 to 750 mA
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 21 to 33 V
I
O
= 5 mA
B =10Hz to 100KHz
V
I
= 22 to 32 V
I
O
= 1 A
f = 1 KHz
V
I
= 35 V
T
J
= 25°C
17.3
17.1
18
18
18.7
18.9
V
V
P
O
≤
15W
V
O
(*)
Line Regulation
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
360
180
360
180
8
0.5
1
mV
V
O
(*)
Load Regulation
mV
I
d
I
d
Quiescent Current
Quiescent Current Change
mA
mA
V
O
/
T Output Voltage Drift
eN
Output Noise Voltage
SVR
Supply Voltage Rejection
V
d
Dropout Voltage
R
O
Output Resistance
I
sc
Short Circuit Current
I
scp
Short Circuit Peak Current
-1
110
mV/°C
μ
V/V
O
dB
V
m
A
A
T
J
= 25°C
f = 120Hz
53
T
J
= 25°C
2
22
0.20
2.1
T
J
= 25°C
Min.
Typ.
Max.
Unit
V
O
V
O
Output Voltage
Output Voltage
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 23 to 35 V
V
I
= 22.5 to 35 V
V
I
= 26 to 32 V
I
O
= 5 mA to 1.5 A
I
O
= 250 to 750 mA
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 23 to 35 V
I
O
= 5 mA
B =10Hz to 100KHz
V
I
= 24 to 35 V
I
O
= 1 A
f = 1 KHz
V
I
= 35 V
T
J
= 25°C
19.2
19
20
20
20.8
21
V
V
P
O
≤
15W
V
O
(*)
Line Regulation
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
400
200
400
200
8
0.5
1
mV
V
O
(*)
Load Regulation
mV
I
d
I
d
Quiescent Current
Quiescent Current Change
mA
mA
V
O
/
T Output Voltage Drift
eN
Output Noise Voltage
SVR
Supply Voltage Rejection
V
d
Dropout Voltage
R
O
Output Resistance
I
sc
Short Circuit Current
I
scp
Short Circuit Peak Current
-1
150
mV/°C
μ
V/V
O
dB
V
m
A
A
T
J
= 25°C
f = 120Hz
52
T
J
= 25°C
2
24
0.18
2.1
T
J
= 25°C
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