參數(shù)資料
型號(hào)： L7812
廠商： 意法半導(dǎo)體
英文描述： positive voltage regulators
中文描述： 正電壓調(diào)節(jié)器
文件頁(yè)數(shù)： 7/34頁(yè)
文件大小： 1801K
代理商： L7812
L7800 SERIES
7/34
Table 7: Electrical Characteristics Of L7812
(refer to the test circuits, T
J
= -55 to 150°C, V
I
= 19V,
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 8: Electrical Characteristics Of L7815
(refer to the test circuits, T
J
= -55 to 150°C, V
I
= 23V,
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
= 15.5 to 27 V
V
I
= 14.5 to 30 V
V
I
= 16 to 22 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
= 15 to 30 V
I
O
= 5 mA
B =10Hz to 100KHz
V
I
= 15 to 25 V
I
O
= 1 A
f = 1 KHz
V
I
= 35 V
T
J
= 25°C
11.5
11.4
12
12
12.5
12.6
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
120
60
100
60
6
0.5
0.8
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
1.5
mV/°C
μ
V/V
O
dB
V
m
A
A
T
J
= 25°C
f = 120Hz
40
61
T
J
= 25°C
2
18
0.75
2.2
2.5
T
J
= 25°C
1.2
3.3
1.3
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
= 18.5 to 30 V
V
I
= 17.5 to 30 V
V
I
= 20 to 26 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
= 18.5 to 30 V
I
O
= 5 mA
B =10Hz to 100KHz
V
I
= 18.5 to 28.5 V
I
O
= 1 A
f = 1 KHz
V
I
= 35 V
T
J
= 25°C
14.4
14.25
15
15
15.6
15.75
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
150
75
150
75
6
0.5
0.8
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
1.8
mV/°C
μ
V/V
O
dB
V
m
A
A
T
J
= 25°C
f = 120Hz
40
60
T
J
= 25°C
2
19
0.75
2.2
2.5
T
J
= 25°C
1.2
3.3
1.3
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