參數(shù)資料
型號(hào)： L7918CD2T-TR
英文描述： Negative Fixed Voltage Regulator
中文描述： 負(fù)固定電壓穩(wěn)壓器
文件頁數(shù)： 4/13頁
文件大?。?/td> 109K
代理商： L7918CD2T-TR
* Load and line regulation are specified at constant junction temperature. Changes in V
o
due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
ELECTRICALCHARACTERISTICS FOR L7906C
(refer to the test circuits, T
j
= 0 to 150
o
C,
V
i
= -11V, I
o
= 500mA, C
i
= 2.2
μ
F, C
o
= 1
μ
F unless otherwisespecified)
Symbol
Parameter
Test Conditions
V
o
OutputVoltage
T
j
= 25
o
C
V
o
OutputVoltage
I
o
= -5mA to -1A
V
i
= -9.5to -21.5V
V
o
*
LineRegulation
V
i
= -8.5to -25V
V
i
= -9to -15 V
Load Regulation
I
o
= 5 to 1500 mA
I
o
= 250 to 750mA
I
d
Quiescent Current
T
j
= 25
o
C
Quiescent Current Change
I
o
= 5 to 1000 mA
Min.
-5.75
Typ.
-6
Max.
-6.25
Unit
V
P
o
≤
15W
-5.7
-6
-6.3
V
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
120
60
mV
mV
V
o
*
120
60
mV
mV
3
mA
I
d
I
d
V
o
T
e
N
0.5
mA
Quiescent Current Change
V
i
= -9.5to -25V
1.3
mA
OutputVoltageDrift
I
o
= 5 mA
-0.6
mV/
o
C
OutputNoise Voltage
B = 10Hzto 100KHz T
j
= 25
o
C
144
μ
V
dB
SVR
Supply Voltage Rejection
V
i
=10 V
I
o
= 1 A
V
O
= 100 mV
f= 120Hz
T
j
= 25
o
C
54
60
V
d
Dropout Voltage
1.4
V
I
sc
Short Circuit Current
2
A
ELECTRICALCHARACTERISTICS FOR L7908C
(refer to the test circuits, T
j
= 0 to 150
o
C,
V
i
= -14V, I
o
= 500mA, C
i
= 2.2
μ
F, C
o
= 1
μ
F unless otherwisespecified)
Symbol
Parameter
Test Conditions
T
j
= 25
o
C
V
o
OutputVoltage
I
o
= -5mA to -1A
V
i
= -11.5to -23 V
V
o
*
LineRegulation
V
i
= -10.5to -25 V
V
i
= -11to -17 V
V
o
*
Load Regulation
I
o
= 5 to 1500 mA
I
o
= 250 to 750mA
I
d
Quiescent Current
T
j
= 25
o
C
I
d
Quiescent Current Change
I
o
= 5 to 1000 mA
I
d
Quiescent Current Change
V
i
= -11.5to -25 V
V
o
T
e
N
OutputNoise Voltage
B = 10Hzto 100KHz T
j
= 25
o
C
Min.
Typ.
Max.
Unit
V
o
OutputVoltage
-7.7
-8
-8.3
V
P
o
≤
15W
-7.6
-8
-8.4
V
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
T
j
= 25
o
C
160
80
mV
mV
160
80
mV
mV
3
mA
0.5
mA
1.3
mA
OutputVoltageDrift
I
o
= 5 mA
-0.6
mV/
o
C
175
μ
V
dB
SVR
Supply Voltage Rejection
V
i
=10 V
I
o
= 1 A
V
O
= 100 mV
f= 120Hz
T
j
= 25
o
C
54
60
V
d
Dropout Voltage
1.1
V
I
sc
Short Circuit Current
1.5
A
L7900
4/13
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