參數(shù)資料
型號(hào)： MC78908CT
廠商： Fairchild Semiconductor Corporation
英文描述： Explosion-Proof Limit Switches Series CX: Standard Housing: Side Rotary, Lever not included
中文描述： 三端負(fù)電壓調(diào)節(jié)器第1A
文件頁(yè)數(shù)： 6/15頁(yè)
文件大?。?/td> 117K
代理商： MC78908CT
MC79XX (LM79XX) (KA79XX/A) FIXED VOLTAGE REGULATOR (NEGATIVE)
LM7912 ELECTRICAL CHARACTERISTICS
(V
I
= 18V, l
O
=500mA, 0
°
C
≤
T
J
≤ +
125
°
C, C
I
=2.2
μ
F, C
O
= 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.
Characteristic
Symbol
Test Conditions
Min
Typ
Max
Unit
T
J
= +25
°
C
I
O
= 5mA to 1A, P
O
15W
V
I
= -15.5 to -27V
V
I
= -14.5 to -30V
V
I
= -16 to -22V
T
J
=+ 25
°
C
I
O
= 5mA to 1.5A
T
J
=+ 25
°
C
I
O
= 250 to 750mA
T
J
=+ 25
°
C
I
O
= 5mA to 1A
V
I
= -15 to -30V
I
O
= 5mA
f = 10Hz to 100KHz
T
A
=+ 25
°
C
f = 120Hz
V
I
= 10V
T
J
= +25
°
C
I
O
= 1A
T
J
=+ 25
°
C, V
I
= -35V
T
J
=+ 25
°
C
-11.5
-12
-12.5
Output Voltage
V
O
-11.4
-12
12
6
-12.6
240
120
V
12
240
4
120
Quiescent Current
I
Q
3
6
mA
0.05
0.1
-0.8
0.5
1
Temperature Coefficient of V
D
V
O
/
T
mV/
°
C
Output Noise Voltage
V
N
200
μ
V
Ripple Rejection
RR
54
60
dB
Dropout Voltage
V
D
2
V
Short Circuit Current
Peak Current
I
SC
I
PK
300
2.2
mA
A
Line Regulation
Load Regulation
V
O
V
O
mV
T
J
= 25
°
C
mV
Quiescent Current Change
I
Q
mA
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