Datasheet

L78L
Electrical characteristics
DocID2145 Rev 26
13/45
Refer to the test circuits, T
J
= 0 to 125 °C, V
I
= 27 V, I
O
= 40 mA, C
I
= 0.33 µF, C
O
= 0.1 µF
unless otherwise specified.
Table 10: Electrical characteristics of L78L18C
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
V
O
Output voltage
T
J
= 25 °C
16.6
18
19.4
V
V
O
Output voltage
I
O
= 1 to 40 mA, V
I
= 22 to 33 V
16.2
19.8
V
I
O
= 1 to 70 mA, V
I
= 27 V
16.2
19.8
∆V
O
Line regulation
V
I
= 22 to 33 V, T
J
= 25 °C
320
mV
V
I
= 22 to 33 V, T
J
= 25 °C
270
∆V
O
Load regulation
I
O
= 1 to 100 mA, T
J
= 25 °C
170
mV
I
O
= 1 to 40 mA, T
J
= 25 °C
85
I
d
Quiescent current
T
J
= 25 °C
6.5
mA
T
J
= 125 °C
6
mA
∆I
d
Quiescent current change
I
O
= 1 to 40 mA
0.2
mA
V
I
= 23 to 33 V
1.5
eN
Output noise voltage
B = 10 Hz to 100 kHz, T
J
= 25 °C
120
µV
SVR
Supply voltage rejection
V
I
= 23 to 33 V, f = 120 Hz
I
O
= 40 mA, T
J
= 25 °C
32
38
dB
V
d
Dropout voltage
1.7
V
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