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参数资料
| 型号： | LM78XXA |
| 厂商： | Fairchild Semiconductor Corporation |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 5.0放大器正电压稳压器 |
| 文件页数： | 15/28页 |
| 文件大小： | 570K |
| 代理商： | LM78XXA |
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15
www.fairchildsemi.com
LM78XX/LM78XXA Rev. 1.0.1
L
Electrical Characteristics (LM7809A)
(Continued)
Refer to the test circuits. 0°C
<
T
J
<
125°C, I
O
= 1A, V
I
= 15V, C
I
= 0.33
μ
F, C
O
= 0.1
μ
F, unless otherwise specified.
Notes:
25. 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 is used.
26. These parameters, although guaranteed, are not 100% tested in production.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
V
O
Output Voltage
T
J
= +25°C
8.82
9.0
9.16
V
I
O
= 5mA to 1A, P
O
≤
15W,
V
I
= 11.2V to 24V
8.65
9.0
9.35
Regline
Line Regulation
(25)
V
I
= 11.7V to 25V, I
O
= 500mA
–
6.0
90.0
mV
V
I
= 12.5V to 19V
–
4.0
45.0
T
J
= +25°C
V
I
= 11.5V to 24V
–
6.0
90.0
V
I
= 12.5V to 19V
–
2.0
45.0
Regload
Load Regulation
(25)
T
J
= +25°C, I
O
= 5mA to 1.5A
–
12.0
100
mV
I
O
= 5mA to 1A
–
12.0
100
I
O
= 250mA to 750mA
–
5.0
50.0
I
Q
Quiescent Current
T
J
= +25°C
–
5.0
6.0
mA
I
Q
Quiescent Current Change I
O
= 5mA to 1A
–
–
0.5
mA
V
I
= 12V to 25V, I
O
= 500mA
–
–
0.8
V
I
= 11.7V to 25V, T
J
= +25°C
–
–
0.8
V
O
/
T
Output Voltage Drift
(26)
I
O
= 5mA
–
-1.0
–
mV/°C
V
N
Output Noise Voltage
f = 10Hz to 100kHz, T
A
= +25°C
–
10.0
–
μ
V/V
O
RR
Ripple Rejection
(26)
f = 120Hz, I
O
= 500mA,
V
I
= 12V to 22V
–
62.0
–
dB
V
DROP
Dropout Voltage
I
O
= 1A, T
J
= +25°C
–
2.0
–
V
r
O
Output Resistance
(26)
f = 1kHz
–
17.0
–
m
I
SC
Short Circuit Current
V
I
= 35V, T
A
= +25°C
–
250
–
mA
I
PK
Peak Current
(26)
T
J
= +25°C
–
2.2
–
A
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