Datasheet

L78L
Electrical characteristics
DocID2145 Rev 26
21/45
Refer to the test circuits, T
J
= 0 to 125 °C (AC) T
J
= -40 to 125 °C (AB), V
I
=19 V,
I
O
= 40 mA, C
I
= 0.33 μF, C
O
= 0.1 μF unless otherwise specified.
Table 18: Electrical characteristics of L78L12AB and L78L12AC
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
= 1 to 40 mA, V
I
= 14.5 to 27 V
11.4
12.6
V
I
O
= 1 to 70 mA, V
I
= 19 V
11.4
12.6
∆V
O
Line regulation
V
I
= 14.5 to 27 V, T
J
= 25 °C
250
mV
V
I
= 16 to 27 V, T
J
= 25 °C
200
∆V
O
Load regulation
I
O
= 1 to 100 mA, T
J
= 25 °C
100
mV
I
O
= 1 to 40 mA, T
J
= 25 °C
50
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
0.1
mA
V
I
= 16 to 27 V
1.5
eN
Output noise voltage
B = 10 Hz to 100 kHz, T
J
= 25 °C
80
µV
SVR
Supply voltage rejection
V
I
= 15 to 25 V, f = 120 Hz
I
O
= 40 mA, T
J
= 25 °C
37
42
dB
V
d
Dropout voltage
1.7
V
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