參數(shù)資料
型號(hào)： MC7800A
廠(chǎng)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(gè)正電壓穩(wěn)壓器（1.0甲正向穩(wěn)壓器）
文件頁(yè)數(shù)： 12/20頁(yè)
文件大?。?/td> 204K
代理商： MC7800A
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
12
ELECTRICAL CHARACTERISTICS (continued)
(V
in
= 33 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless
otherwise noted.)
MC7824B
MC7824C
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Ripple Rejection
28 Vdc
≤
V
in
≤
38 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
C)
RR
–
54
–
50
54
–
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
–
1.4
–
–
1.4
–
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
–
–2.0
–
–
–2.0
–
mV/
°
C
ELECTRICAL CHARACTERISTICS
(V
in
= 33 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7824AC
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (T
J
= 25
°
C)
V
O
23.5
24
24.5
Vdc
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
27.3 Vdc
≤
V
in
≤
38 Vdc
Line Regulation (Note 2)
27 Vdc
≤
V
in
≤
38 Vdc, I
O
= 500 mA
30 Vdc
≤
V
in
≤
36 Vdc, I
O
= 1.0 A
30 Vdc
≤
V
in
≤
36 Vdc, T
J
= 25
°
C
26.7 Vdc
≤
V
in
≤
38 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
23.2
24
25.8
Vdc
Reg
line
mV
–
–
–
–
11.5
3.8
3.8
10
25
28
12
25
Reg
load
mV
–
–
–
2.1
2.0
1.8
15
25
15
I
B
–
3.6
6.0
mA
Quiescent Current Change
27.3 Vdc
≤
V
in
≤
38 Vdc, I
O
= 500 mA
27 Vdc
≤
V
in
≤
38 Vdc, T
J
= 25
°
C
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
28 Vdc
≤
V
in
≤
38 Vdc, f = 120 Hz, I
O
= 500 mA
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
C)
I
B
mA
–
–
–
–
–
–
0.8
0.8
0.5
RR
45
54
–
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
–
1.4
–
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
–
–2.0
–
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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