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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 5/16頁(yè) |
| 文件大小： | 414K |
| 代理商： | 79XX |
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L7900 SERIES
5/16
ELECTRICAL CHARACTERISTICS OF L7908C
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -14V,
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 L7912C
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -19V,
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
= -11.5 to -23 V
V
I
= -10.5 to -25 V
V
I
= -11 to -17 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
= -11.5 to -25 V
I
O
= 5 mA
B = 10Hz to 100KHz
V
I
= 10 V
I
O
= 1 A
-7.7
-7.6
-8
-8
-8.3
-8.4
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
160
80
160
80
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
-0.6
175
60
1.1
1.5
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
= -15.5 to -27 V
V
I
= -14.5 to -30 V
V
I
= -16 to -22 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
= -15 to -30 V
I
O
= 5 mA
B = 10Hz to 100KHz
V
I
= 10 V
I
O
= 1 A
-11.5
-11.4
-12
-12
-12.5
-12.6
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
240
120
240
120
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
-0.8
200
60
1.1
1.5
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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