Data Sheet

Electrical characteristics L78LxxAB, L78LxxAC, L78LxxC
10/33 Doc ID 2145 Rev 21
T
J
= 0 to 125 °C for L78L33AC, T
J
= -40 to 125 °C for L78L33AB.
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
= 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
Table 11. Electrical characteristics of L78L18C (V
I
= 27 V) (continued)
Symbol Parameter Test conditions Min. Typ. Max. Unit
Table 12. Electrical characteristics of L78L24C (V
I
= 33 V)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage T
J
= 25 °C 22.1 24 25.9 V
V
O
Output voltage
I
O
= 1 to 40 mA, V
I
= 27 to 38 V 21.6 26.4
V
I
O
= 1 to 70 mA, V
I
= 33 V 21.6 26.4
ΔV
O
Line regulation
V
I
= 27 to 38 V, T
J
= 25 °C 350
mV
V
I
= 28 to 38 V, T
J
= 25 °C 300
ΔV
O
Load regulation
I
O
= 1 to 100 mA, T
J
= 25 °C 200
mV
I
O
= 1 to 40 mA, T
J
= 25 °C 100
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
= 28 to 38 V 1.5
eN Output noise voltage B =10 Hz to 100 kHz, T
J
= 25 °C 200 µV
SVR Supply voltage rejection
V
I
= 29 to 35 V, f = 120 Hz
I
O
= 40 mA, T
J
= 25 °C
30 37 dB
V
d
Dropout voltage 1.7 V
Table 13. Electrical characteristics of L78L33AB and L78L33AC (V
I
= 8.3 V)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage T
J
= 25 °C 3.168 3.3 3.432 V
V
O
Output voltage
I
O
= 1 to 40 mA, V
I
= 5.3 to 20 V 3.135 3.465
V
I
O
= 1 to 70 mA, V
I
= 8.3 V 3.135 3.465
ΔV
O
Line regulation
V
I
= 5.3 to 20 V, T
J
= 25 °C 150
mV
V
I
= 6.3 to 20 V, T
J
= 25 °C 100