L7900 SERIES
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).
Symbol
V
O
V
O
∆V
O
(*)
∆V
O
(*)
I
d
∆I
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
T
J
= 25°C
I
O
= -5 mA to -1 A P
O
≤
15 W
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
∆V
O
/∆T Output Voltage Drift
eN
SVR
V
d
I
sc
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Short Circuit Current
I
O
= 5 mA
B = 10Hz to 100KHz
∆V
I
= 10 V
I
O
= 1 A
f = 120Hz
T
J
= 25°C
∆V
O
= 100 mV
T
J
= 25°C
54
-1.1
350
60
1.1
0.9
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
-19.2
-19
Typ.
-20
-20
Max.
-20.8
-21
400
200
400
200
3
0.5
1
mV/°C
µV
dB
V
A
mA
mA
mV
Unit
V
V
mV
(*) 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).
Symbol
V
O
V
O
∆V
O
(*)
∆V
O
(*)
I
d
∆I
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
T
J
= 25°C
I
O
= -5 mA to -1 A P
O
≤
15 W
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
∆V
O
/∆T Output Voltage Drift
eN
SVR
V
d
I
sc
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Short Circuit Current
I
O
= 5 mA
B = 10Hz to 100KHz
∆V
I
= 10 V
I
O
= 1 A
f = 120Hz
T
J
= 25°C
∆V
O
= 100 mV
T
J
= 25°C
54
-1.1
375
60
1.1
1.1
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
-21.1
-20.9
Typ.
-22
-22
Max.
-22.9
-23.1
440
220
440
220
3
0.5
1
mV/°C
µV
dB
V
A
mA
mA
mV
Unit
V
V
mV
(*) 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.
7/16
STMICROELECTRONICS [ STMICROELECTRONICS ]
