參數(shù)資料
型號： MC7800A
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)： 3/20頁
文件大小： 204K
代理商： MC7800A
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(V
in
= 10 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7805B, NCV7805
MC7805C/LM340T–5
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (T
J
= 25
°
C)
V
O
4.8
5.0
5.2
4.8
5.0
5.2
Vdc
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
7.0 Vdc
≤
V
in
≤
20 Vdc
8.0 Vdc
≤
V
in
≤
20 Vdc
Line Regulation (Note 2)
7.5 Vdc
≤
V
in
≤
20 Vdc, 1.0 A
8.0 Vdc
≤
V
in
≤
12 Vdc
Load Regulation (Note 2)
5.0 mA
≤
I
O
≤
1.0 A
5.0 mA
≤
I
O
≤
1.5 A (T
A
= 25
°
C)
Quiescent Current
V
O
Vdc
–
–
–
4.75
–
5.0
–
5.25
–
4.75
5.0
5.25
Reg
line
mV
–
–
5.0
1.3
100
50
–
–
0.5
0.8
20
10
Reg
load
mV
–
–
1.3
0.15
100
50
–
–
1.3
1.3
25
25
I
B
–
3.2
8.0
–
3.2
6.5
mA
Quiescent Current Change
7.0 Vdc
≤
V
in
≤
25 Vdc
5.0 mA
≤
I
O
≤
1.0 A (T
A
= 25
°
C)
Ripple Rejection
8.0 Vdc
≤
V
in
≤
18 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
C)
I
B
mA
–
–
–
–
–
–
–
0.3
0.08
1.0
0.8
0.5
RR
–
68
–
62
83
–
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
–
–
0.6
–
A
I
max
–
2.2
–
–
2.2
–
A
Average Temperature Coefficient of
Output Voltage
TCV
O
–
–0.3
–
–
–0.3
–
mV/
°
C
ELECTRICAL CHARACTERISTICS
(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
Output Voltage (T
J
= 25
°
C)
V
O
4.9
5.0
5.1
Vdc
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
7.5 Vdc
≤
V
in
≤
20 Vdc
Line Regulation (Note 2)
7.5 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
8.0 Vdc
≤
V
in
≤
12 Vdc, I
O
= 1.0 A
8.0 Vdc
≤
V
in
≤
12 Vdc, I
O
= 1.0 A, T
J
= 25
°
C
7.3 Vdc
≤
V
in
≤
20 Vdc, I
O
= 1.0 A, T
J
= 25
°
C
Load Regulation (Note 2)
5.0 mA
≤
I
O
≤
1.5 A, T
J
= 25
°
C
5.0 mA
≤
I
O
≤
1.0 A
250 mA
≤
I
O
≤
750 mA
Quiescent Current
V
O
4.8
5.0
5.2
Vdc
Reg
line
mV
–
–
–
–
0.5
0.8
1.3
4.5
10
12
4.0
10
Reg
load
mV
–
–
–
1.3
0.8
0.53
25
25
15
I
B
–
3.2
6.0
mA
Quiescent Current Change
8.0 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
7.5 Vdc
≤
V
in
≤
20 Vdc, T
J
= 25
°
C
5.0 mA
≤
I
O
≤
1.0 A
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
–
–
–
0.3
–
0.08
0.8
0.8
0.5
T
high
= +125
°
C for MC78XXAC, C, LM340AT–XX, LM340T–XX, NCV7805
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