參數(shù)資料
型號(hào): MC7818CT
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 3-terminal 1A positive voltage regulator
中文描述: 18 V FIXED POSITIVE REGULATOR, PSFM3
封裝: TO-220, 3 PIN
文件頁(yè)數(shù): 8/18頁(yè)
文件大小: 174K
代理商: MC7818CT
MC78XX/LM78XX
8
Electrical Characteristics (MC7818)
(Refer to test circuit ,0
o
C
< T
J
< +125
o
C
, I
O
= 500mA, V
I
= 27V, C
I
= 0.33
μ
F, C
O
= 0.1
μ
F, unless otherwise specified)
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.
Parameter
Symbol
Conditions
MC7818
Typ.
18
Unit
Min.
17.3
Max.
18.7
Output Voltage
V
O
T
J
=+25
o
C
5.0mA
I
O
1.0A, P
D
15W
V
I
= 21V to 33V
V
I
= 22V to 33V
17.1
18
18.9
V
Line Regulation
V
O
T
J
=+25
o
C
V
I
= 21V to 33V
V
I
= 24V to 30V
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
-
-
-
-
-
-
-
-
-
-
15
5
15
5.0
5.2
-
-
-
-1
110
360
180
360
180
8
0.5
1
mV
Load Regulation
V
O
T
J
=+25
o
C
mV
Quiescent Current
I
Q
T
J
=+25
o
C
I
O
= 5mA to 1.0A
V
I
= 21V to 33V
V
I
= 22V to 33V
I
O
= 5mA
f = 10Hz to 100KHz, T
A
=+25
o
C
f = 120Hz
V
I
= 22V to 32V
I
O
= 1A, T
J
=+25
o
C
f = 1KHz
V
I
= 35V, T
A
=+25
o
C
T
J
=+25
o
C
mA
Quiescent Current Change
I
Q
mA
Output Voltage Drift
Output Noise Voltage
V
O
/
T
V
N
-
-
mV/
o
C
μ
V
Ripple
Rejection
RR
53
69
-
dB
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
V
O
R
O
I
SC
I
PK
-
-
-
-
2
-
-
-
-
V
22
250
2.2
m
mA
A
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