參數(shù)資料
型號: 79XX
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 REGULATORS
中文描述: 負(fù)電壓調(diào)節(jié)器
文件頁數(shù): 7/16頁
文件大?。?/td> 414K
代理商: 79XX
L7900 SERIES
7/16
ELECTRICAL CHARACTERISTICS OF L7920C
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -29V,
I
O
= 500 mA, C
I
= 2.2 μF, C
O
= 1 μF 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 cycle is used.
ELECTRICAL CHARACTERISTICS OF L7922C
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -31V,
I
O
= 500 mA, C
I
= 2.2 μF, C
O
= 1 μF 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 cycle is used.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
O
V
O
Output Voltage
Output Voltage
T
J
= 25°C
I
O
= -5 mA to -1 A
V
I
= -24 to -35 V
V
I
= -23 to -35 V
V
I
= -26 to -32 V
I
O
= 5 mA to 1.5 A
I
O
= 250 to 750 mA
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= -24 to -35 V
I
O
= 5 mA
B = 10Hz to 100KHz
V
I
= 10 V
I
O
= 1 A
-19.2
-19
-20
-20
-20.8
-21
V
V
P
O
15 W
V
O
(*)
Line Regulation
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
400
200
400
200
3
0.5
1
mV
V
O
(*)
Load Regulation
mV
I
d
I
d
Quiescent Current
Quiescent Current Change
mA
mA
V
O
/
T Output Voltage Drift
eN
Output Noise Voltage
SVR
Supply Voltage Rejection
V
d
Dropout Voltage
I
sc
Short Circuit Current
-1.1
350
60
1.1
0.9
mV/°C
μ
V
dB
V
A
T
J
= 25°C
f = 120Hz
T
J
= 25°C
54
V
O
= 100 mV
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
O
V
O
Output Voltage
Output Voltage
T
J
= 25°C
I
O
= -5 mA to -1 A
V
I
= -26 to -37 V
V
I
= -25 to -37 V
V
I
= -28 to -34 V
I
O
= 5 mA to 1.5 A
I
O
= 250 to 750 mA
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= -26 to -37 V
I
O
= 5 mA
B = 10Hz to 100KHz
V
I
= 10 V
I
O
= 1 A
-21.1
-20.9
-22
-22
-22.9
-23.1
V
V
P
O
15 W
V
O
(*)
Line Regulation
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
440
220
440
220
3
0.5
1
mV
V
O
(*)
Load Regulation
mV
I
d
I
d
Quiescent Current
Quiescent Current Change
mA
mA
V
O
/
T Output Voltage Drift
eN
Output Noise Voltage
SVR
Supply Voltage Rejection
V
d
Dropout Voltage
I
sc
Short Circuit Current
-1.1
375
60
1.1
1.1
mV/°C
μ
V
dB
V
A
T
J
= 25°C
f = 120Hz
T
J
= 25°C
54
V
O
= 100 mV
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