Datasheet

Refer to the test circuits, T
J
= 0 to 125 °C, V
I
= -19 V, I
O
= 500 mA, C
I
= 2.2 µF, C
O
= 1 µF unless otherwise
specified.
Table 6. Electrical characteristics of L7912AC
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage
T
J
= 25 °C
-11.75 -12 -12.25 V
V
O
Output voltage
I
O
= -5 mA to -1 A, P
O
≤ 15 W
V
I
= -15.5 to -27 V
-11.5 -12 -12.5 V
ΔV
O
(1)
Line regulation
V
I
= -14.5 to -30 V, T
J
= 25 °C
240
mV
V
I
= -16 to -22 V, T
J
= 25 °C
120
ΔV
O
(1)
Load regulation
I
O
= 5 mA to 1.5 A, T
J
= 25 °C
240
mV
I
O
= 250 to 750 mA, T
J
= 25 °C
120
I
d
Quiescent current
T
J
= 25 °C
3 mA
ΔI
d
Quiescent current change
I
O
= 5 mA to 1 A
0.5
mA
V
I
= -15 to -30 V
1
ΔV
O
/ΔT
Output voltage drift
I
O
= 5 mA
-0.8 mV/°C
eN Output noise voltage
B = 10 Hz to 100 kHz, T
J
= 25 °C
200 µV
SVR Supply voltage rejection
ΔV
I
= 10 V, f = 120 Hz
54 60 dB
V
d
Dropout voltage
I
O
= 1 A, T
J
= 25 °C,
ΔV
O
= 100 mV
1.1 V
I
sc
Short circuit current 1.0 A
I
scp
Short circuit peak current
T
J
= 25 °C, V
I
= -10 V
1.8 A
1. 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.
Refer to the test circuits, T
J
= 0 to 125 °C, V
I
= -19 V, I
O
= 500 mA, C
I
= 2.2 µF, C
O
= 1 µF unless otherwise
specified.
Table 7. Electrical characteristics of L7912C
Symbol
Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage
T
J
= 25 °C
-11.5 -12 -12.5 V
V
O
Output voltage
I
O
= -5 mA to -1 A, P
O
≤ 15 W
V
I
= -15.5 to -27 V
-11.4 -12 -12.6 V
ΔV
O
(1)
Line regulation
V
I
= -14.5 to -30 V, T
J
= 25 °C
240
mV
V
I
= -16 to -22 V, T
J
= 25 °C
120
ΔV
O
(1)
Load regulation
I
O
= 5 mA to 1.5 A, T
J
= 25 °C
240
mV
I
O
= 250 to 750 mA, T
J
= 25 °C
120
I
d
Quiescent current
T
J
= 25 °C
3 mA
L79
Electrical characteristics
DS0428 - Rev 24
page 8/29