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參數(shù)資料
| 型號： | LM340A |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 1.0 A Positive Voltage Regulators(1.0 A 正向穩(wěn)壓器) |
| 中文描述： | 1.0一個正電壓穩(wěn)壓器（1.0甲正向穩(wěn)壓器） |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 204K |
| 代理商： | LM340A |
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(continued)
(V
in
= 10 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless
otherwise noted.)
MC7805AB/MC7805AC/LM340AT–5
Characteristic
Symbol
Min
Typ
Max
Unit
Ripple Rejection
8.0 Vdc
≤
V
in
≤
18 Vdc, f = 120 Hz, I
O
= 500 mA
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
C)
RR
68
83
–
dB
V
I
– V
O
–
2.0
–
Vdc
Output Noise Voltage (T
A
= 25
°
C)
10 Hz
≤
f
≤
100 kHz
V
n
–
10
–
μ
V/V
O
Output Resistance (f = 1.0 kHz)
r
O
–
0.9
–
m
Short Circuit Current Limit (T
A
= 25
°
C)
V
in
= 35 Vdc
Peak Output Current (T
J
= 25
°
C)
I
SC
–
0.2
–
A
I
max
–
2.2
–
A
Average Temperature Coefficient of Output Voltage
TCV
O
–
–0.3
–
mV/
°
C
ELECTRICAL CHARACTERISTICS
(V
in
= 11 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7806B
MC7806C
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (T
J
= 25
°
C)
V
O
5.75
6.0
6.25
5.75
6.0
6.25
Vdc
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
8.0 Vdc
≤
V
in
≤
21 Vdc
9.0 Vdc
≤
V
in
≤
21 Vdc
Line Regulation, T
J
= 25
°
C (Note 2)
8.0 Vdc
≤
V
in
≤
25 Vdc
9.0 Vdc
≤
V
in
≤
13 Vdc
Load Regulation, T
J
= 25
°
C (Note 2)
5.0 mA
≤
I
O
≤
1.5 A
Quiescent Current (T
J
= 25
°
C)
V
O
Vdc
–
–
–
5.7
–
6.0
–
6.3
–
5.7
6.0
6.3
Reg
line
mV
–
–
5.5
1.4
120
60
–
–
0.5
0.8
24
12
Reg
load
–
1.3
120
–
1.3
30
mV
I
B
–
3.3
8.0
–
3.3
8.0
mA
Quiescent Current Change
8.0 Vdc
≤
V
in
≤
25 Vdc
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
9.0 Vdc
≤
V
in
≤
19 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
C)
I
B
mA
–
–
–
–
–
–
–
0.3
0.08
1.3
0.5
0.5
RR
–
65
–
58
65
–
dB
V
I
– V
O
–
2.0
–
–
2.0
–
Vdc
Output Noise Voltage (T
A
= 25
°
C)
10 Hz
≤
f
≤
100 kHz
V
n
–
10
–
–
10
–
μ
V/V
O
Output Resistance f = 1.0 kHz
r
O
–
0.9
–
–
0.9
–
m
Short Circuit Current Limit (T
A
= 25
°
C)
V
in
= 35 Vdc
Peak Output Current (T
J
= 25
°
C)
I
SC
–
0.2
–
–
0.2
–
A
I
max
–
2.2
–
–
2.2
–
A
Average Temperature Coefficient of Output
Voltage
TCV
O
–
–0.3
–
–
–0.3
–
mV/
°
C
1. T
low
= 0
°
C for MC78XXAC, C, LM340AT–XX, LM340T–XX
=
40
°
C for MC78XXB, MC78XXAB, NCV7805
2. 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.
T
high
= +125
°
C for MC78XXAC, C, LM340AT–XX, LM340T–XX, NCV7805
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