參數(shù)資料
型號(hào)： L7900AC
廠商： 意法半導(dǎo)體
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Negative Voltage Regulator(輸出負(fù)電壓穩(wěn)壓器)
中文描述： 負(fù)電壓穩(wěn)壓器（輸出負(fù)電壓穩(wěn)壓器）
文件頁數(shù)： 5/11頁
文件大?。?/td> 103K
代理商： L7900AC
* 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 isused.
ELECTRICALCHARACTERISTICS FOR L7912A
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= -19V, I
o
= 500 mA, C
i
= 2.2
μ
F, C
o
= 1
μ
F unlessotherwise specified)
Symbol
Parameter
Test Conditions
V
o
OutputVoltage
T
j
= 25
o
C
V
o
OutputVoltage
I
o
= -5 mA to -1 A
V
i
= -15.5 to -27V
V
o
*
Line Regulation
V
i
= -14.5 to -30V
V
i
= -16 to -22V
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
= -15 to -25V
V
o
T
e
N
OutputNoise Voltage
B = 10Hz to100KHz T
j
= 25
o
C
SVR
Supply Voltage Rejection
V
i
= 10 V
V
d
Dropout Voltage
I
o
= 1 A
V
O
= 100 mV
I
sc
Short Circuit Current
I
scp
Short Circuit Peak Current
T
j
= 25
o
C
Min.
-11.75
Typ.
-12
Max.
-12.25
Unit
V
P
o
≤
15 W
-11.5
-12
-12.5
V
T
j
= 25
o
C
T
j
= 25
o
C
T
j
=25
o
C
T
j
=25
o
C
240
120
mV
mV
240
120
mV
mV
3
mA
0.5
mA
1
mA
mV/
o
C
OutputVoltage Drift
I
o
= 5mA
-0.8
200
μ
V
dB
f = 120Hz
T
j
=25
o
C
54
60
1.1
V
1.5
A
2.5
A
ELECTRICALCHARACTERISTICS FOR L7915A
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= -23V, I
o
= 500 mA, C
i
= 2.2
μ
F, C
o
= 1
μ
F unlessotherwise specified)
Symbol
Parameter
Test Conditions
V
o
OutputVoltage
T
j
= 25
o
C
V
o
OutputVoltage
I
o
= -5 mA to -1 A
V
i
= -18.5 to -30V
V
o
*
Line Regulation
V
i
= -17.5 to -30V
V
i
= -20 to -26V
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
= -18.5 to -30V
V
o
T
e
N
OutputNoise Voltage
B = 10Hz to100KHz T
j
= 25
o
C
SVR
Supply Voltage Rejection
V
i
= 10 V
V
d
Dropout Voltage
I
o
= 1 A
V
O
= 100 mV
I
sc
Short Circuit Current
I
scp
Short Circuit Peak Current
T
j
= 25
o
C
Min.
-14.7
Typ.
-15
Max.
-15.3
Unit
V
P
o
≤
15 W
-14.4
-15
-15.6
V
T
j
= 25
o
C
T
j
= 25
o
C
T
j
=25
o
C
T
j
=25
o
C
300
150
mV
mV
300
150
mV
mV
3
mA
0.5
mA
1
mA
mV/
o
C
OutputVoltage Drift
I
o
= 5mA
-0.9
250
μ
V
dB
f = 120Hz
T
j
=25
o
C
54
60
1.1
V
1.3
A
2.3
A
L7900AC
5/11
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