Datasheet

ELECTRICAL CHARACTERISTICS FOR L78L18AB AND L78L18AC
(refer to the test circuits, V
i
= 27V, I
o
=40mA,C
i
=0.33µF, C
o
=0.1µF,
T
j
=0to125
o
C for L78L18AC, T
j
= -40 to 125
o
C for L78L18AB, unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage T
j
=25
o
C 17.3 18 18.7 V
V
o
Output Voltage I
o
= 1 to 40 mA V
i
=22to33V
I
o
= 1 to 70 mA V
i
=27V
17.1
17.1
18.9
18.9
V
V
∆V
o
Line Regulation V
i
=22to33V T
j
=25
o
C
V
i
=22to33V T
j
=25
o
C
320
270
mV
mV
∆V
o
Load Regulation I
o
= 1 to 100 mA T
j
=25
o
C
I
o
= 1 to 40 mA T
j
=25
o
C
170
85
mV
mV
I
d
Quiescent Current T
j
=25
o
C
T
j
= 125
o
C
6.5
6
mA
mA
∆I
d
Quiescent Current Change I
o
= 1 to 40 mA 0.1 mA
∆I
d
Quiescent Current Change V
i
= 23 to 33 V 1.5 mA
eN Output Noise Voltage B = 10Hz to 100KHz T
j
=25
o
C 120 µV
SVR Supply Voltage Rejection I
o
= 40 mA f = 120 Hz T
j
=25
o
C
V
i
=23to33V
33 38 dB
V
d
Dropout Voltage 1.7 V
ELECTRICAL CHARACTERISTICS FOR L78L24AB AND L78L24AC
(refer to the test circuits, V
i
= 33V, I
o
=40mA,C
i
=0.33µF, C
o
=0.1µF,
T
j
=0to125
o
C for L78L24AC, T
j
= -40 to 125
o
C for L78L24AB, unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage T
j
=25
o
C 232425 V
V
o
Output Voltage I
o
= 1 to 40 mA V
i
=27to38V
I
o
= 1 to 70 mA V
i
=33V
22.8
22.8
25.2
25.2
V
V
∆V
o
Line Regulation V
i
=27to38V T
j
=25
o
C
V
i
=28to38V T
j
=25
o
C
350
300
mV
mV
∆V
o
Load Regulation I
o
= 1 to 100 mA T
j
=25
o
C
I
o
= 1 to 40 mA T
j
=25
o
C
200
100
mV
mV
I
d
Quiescent Current T
j
=25
o
C
T
j
= 125
o
C
6.5
6
mA
mA
∆I
d
Quiescent Current Change I
o
= 1 to 40 mA 0.1 mA
∆I
d
Quiescent Current Change V
i
= 28 to 38 V 1.5 mA
eN Output Noise Voltage B = 10Hz to 100KHz T
j
=25
o
C 200 µV
SVR Supply Voltage Rejection I
o
= 40 mA f = 120 Hz T
j
=25
o
C
V
i
=29to35V
31 37 dB
V
d
Dropout Voltage 1.7 V
L78L00 SERIES
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