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)： 7/11頁
文件大小： 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 L7922A
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= -31V, 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
= -26 to -37V
V
o
*
Line Regulation
V
i
= -25 to -37V
V
i
= -28 to -34V
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
= -26 to -37V
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.
-21.5
Typ.
-22
Max.
-22.4
Unit
V
P
o
≤
15 W
-21.1
-22
-22.8
V
T
j
= 25
o
C
T
j
= 25
o
C
T
j
=25
o
C
T
j
=25
o
C
440
220
mV
mV
440
220
mV
mV
3
mA
0.5
mA
1
mA
mV/
o
C
OutputVoltage Drift
I
o
= 5mA
-1.1
375
μ
V
dB
f = 120Hz
T
j
=25
o
C
54
60
1.1
V
1.1
A
2.2
A
ELECTRICALCHARACTERISTICS FOR L7924A
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= -33V, 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
= -27 to -38V
V
o
*
Line Regulation
V
i
= -27 to -38V
V
i
= -30 to -36V
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
= -27 to -38V
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.
-23.5
Typ.
-24
Max.
-24.5
Unit
V
P
o
≤
15 W
-23
-24
-25
V
T
j
= 25
o
C
T
j
= 25
o
C
T
j
=25
o
C
T
j
=25
o
C
480
240
mV
mV
480
240
mV
mV
3
mA
0.5
mA
1
mA
mV/
o
C
OutputVoltage Drift
I
o
= 5mA
-1
400
μ
V
dB
f = 120Hz
T
j
=25
o
C
54
60
1.1
V
1.1
A
2.2
A
L7900AC
7/11
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