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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)： | 7/20頁 |
| 文件大?。?/td> | 204K |
| 代理商： | LM340A |
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
7
ELECTRICAL CHARACTERISTICS
(V
in
= 15 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7809B
MC7809C
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (T
J
= 25
°
C)
V
O
8.65
9.0
9.35
8.65
9.0
9.35
Vdc
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
11.5 Vdc
≤
V
in
≤
24 Vdc
Line Regulation, T
J
= 25
°
C (Note 2)
11 Vdc
≤
V
in
≤
26 Vdc
11.5 Vdc
≤
V
in
≤
17 Vdc
Load Regulation, T
J
= 25
°
C (Note 2)
5.0 mA
≤
I
O
≤
1.5 A
Quiescent Current
V
O
Vdc
8.55
9.0
9.45
8.55
9.0
9.45
Reg
line
mV
–
–
6.2
1.8
32
16
–
–
6.2
1.8
32
16
Reg
load
–
1.5
35
–
1.5
35
mV
I
B
–
3.4
8.0
–
3.4
8.0
mA
Quiescent Current Change
11.5 Vdc
≤
V
in
≤
26 Vdc
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
11.5 Vdc
≤
V
in
≤
21.5 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
C)
I
B
mA
–
–
–
–
1.0
0.5
–
–
–
–
1.0
0.5
RR
56
61
–
56
61
–
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
–
1.0
–
–
1.0
–
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
–
–0.5
–
–
–0.5
–
mV/
°
C
ELECTRICAL CHARACTERISTICS
(V
in
= 19 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7812B
MC7812C/LM340T–12
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (T
J
= 25
°
C)
V
O
11.5
12
12.5
11.5
12
12.5
Vdc
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
14.5 Vdc
≤
V
in
≤
27 Vdc
15.5 Vdc
≤
V
in
≤
27 Vdc
Line Regulation, T
J
= 25
°
C (Note 2)
14.5 Vdc
≤
V
in
≤
30 Vdc
16 Vdc
≤
V
in
≤
22 Vdc
14.8 Vdc
≤
V
in
≤
27 Vdc, I
O
= 1.0 A
Load Regulation, T
J
= 25
°
C (Note 2)
5.0 mA
≤
I
O
≤
1.5 A
Quiescent Current
V
O
Vdc
–
–
12
–
11.4
–
12
–
12.6
–
11.4
12.6
Reg
line
mV
–
–
–
7.5
2.2
–
240
120
–
–
–
–
3.8
0.3
–
24
24
48
Reg
load
–
1.6
240
–
8.1
60
mV
I
B
–
3.4
8.0
–
3.4
6.5
mA
Quiescent Current Change
14.5 Vdc
≤
V
in
≤
30 Vdc, I
O
= 1.0 A, T
J
= 25
°
C
15 Vdc
≤
V
in
≤
30 Vdc
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
15 Vdc
≤
V
in
≤
25 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
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.
I
B
mA
–
–
–
–
–
–
–
–
–
–
–
–
–
0.7
0.8
0.5
1.0
0.5
RR
–
60
–
55
60
–
dB
V
I
– V
O
–
2.0
–
–
2.0
–
Vdc
T
high
= +125
°
C for MC78XXAC, C, LM340AT–XX, LM340T–XX, NCV7805
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相關代理商/技術參數(shù) |
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