Data Sheet

L78LxxAB, L78LxxAC, L78LxxC Electrical characteristics
Doc ID 2145 Rev 21 9/33
ΔI
d
Quiescent current change
I
O
= 1 to 40 mA 0.2
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
36 42 dB
V
d
Dropout voltage 1.7 V
Table 9. Electrical characteristics of L78L12C (V
I
= 19 V) (continued)
Symbol Parameter Test conditions Min. Typ. Max. Unit
Table 10. Electrical characteristics of L78L15C (V
I
= 23 V)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage T
J
= 25 °C 13.8 15 16.2 V
V
O
Output voltage
I
O
= 1 to 40 mA, V
I
= 17.5 to 30 V 13.5 16.5
V
I
O
= 1 to 70 mA, V
I
= 23 V 13.5 16.5
ΔV
O
Line regulation
V
I
= 17.5 to 30 V, T
J
= 25 °C 300
mV
V
I
= 20 to 30 V, T
J
= 25 °C 250
ΔV
O
Load regulation
I
O
= 1 to 100 mA, T
J
= 25 °C 150
mV
I
O
= 1 to 40 mA, T
J
= 25 °C 75
I
d
Quiescent current
T
J
= 25 °C 6.5 mA
T
J
= 125 °C 6 mA
ΔI
d
Quiescent current change
I
O
= 1 to 40 mA 0.2
mA
V
I
= 20 to 30 V 1.5
eN Output noise voltage B =10 Hz to 100 kHz, T
J
= 25 °C 90 µV
SVR Supply voltage rejection
V
I
= 18.5 to 28.5 V, f = 120 Hz
I
O
= 40 mA, T
J
= 25 °C
33 39 dB
V
d
Dropout voltage 1.7 V
Table 11. Electrical characteristics of L78L18C (V
I
= 27 V)
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
ΔV
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
ΔV
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