* 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 is used.
ELECTRICALCHARACTERISTICS FOR L7912C
(refer to the test circuits, T
j
= 0 to 150
o
C,
V
i
= -19V, I
o
= 500 mA, C
i
= 2.2 µF, C
o
=1µF unless otherwisespecified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage T
j
=25
o
C -11.5 -12 -12.5 V
V
o
Output Voltage I
o
=-5mAto-1A P
o
≤15 W
V
i
= -15.5 to -27 V
-11.4 -12 -12.6 V
∆
V
o
* Line Regulation V
i
= -14.5 to -30 V T
j
=25
o
C
V
i
= -16to -22 V T
j
=25
o
C
240
120
mV
mV
∆V
o
* Load Regulation I
o
= 5 to 1500 mA T
j
=25
o
C
I
o
= 250 to 750 mA T
j
=25
o
C
240
120
mV
mV
I
d
Quiescent Current T
j
=25
o
C3mA
∆I
d
Quiescent Current Change I
o
= 5 to 1000 mA 0.5 mA
∆I
d
Quiescent Current Change V
i
= -15to -30 V 1 mA
∆
V
o
∆
T
Output Voltage Drift I
o
= 5 mA -0.8 mV/
o
C
e
N
Output Noise Voltage B = 10Hz to 100KHz T
j
=25
o
C200
µ
V
SVR Supply Voltage Rejection ∆V
i
=10 V f= 120Hz 54 60 dB
V
d
Dropout Voltage I
o
=1A T
j
=25
o
C
∆V
O
=100mV
1.1 V
I
sc
Short Circuit Current 1.5 A
I
scp
Short Circuit Peak Current T
j
=25
o
C2.5A
ELECTRICALCHARACTERISTICS FOR L7915C (refer to the test circuits, T
j
= 0 to 150
o
C,
V
i
= -23V, I
o
= 500 mA, C
i
= 2.2 µF, C
o
=1µF unless otherwisespecified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage T
j
=25
o
C -14.4 -15 -15.6 V
V
o
Output Voltage I
o
=-5mAto-1A P
o
≤
15 W
V
i
= -18.5 to -30 V
-14.3 -15 -15.7 V
∆V
o
* Line Regulation V
i
= -17.5 to -30 V T
j
=25
o
C
V
i
= -20to -26 V T
j
=25
o
C
300
150
mV
mV
∆
V
o
* Load Regulation I
o
= 5 to 1500 mA T
j
=25
o
C
I
o
= 250 to 750 mA T
j
=25
o
C
300
150
mV
mV
I
d
Quiescent Current T
j
=25
o
C3mA
∆I
d
Quiescent Current Change I
o
= 5 to 1000 mA 0.5 mA
∆
I
d
Quiescent Current Change V
i
= -18.5 to -30 V 1 mA
∆
V
o
∆
T
Output Voltage Drift I
o
= 5 mA -0.9 mV/
o
C
e
N
Output Noise Voltage B = 10Hz to 100KHz T
j
=25
o
C250µV
SVR Supply Voltage Rejection ∆V
i
=10 V f= 120Hz 54 60 dB
V
d
Dropout Voltage I
o
=1A T
j
=25
o
C
∆
V
O
=100mV
1.1 V
I
sc
Short Circuit Current 1.3 A
I
scp
Short Circuit Peak Current T
j
=25
o
C2.2A
L7900
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