Datasheet

L78Sxx, L78SxxC Electrical characteristics
Doc ID 2148 Rev 7 21/39
Refer to the test circuits, T
J
= 25 °C, V
I
= 33 V, I
O
= 500 mA, unless otherwise specified.
Table 19. Electrical characteristics of L78S24C
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage 23 24 25 V
V
O
Output voltage I
O
= 1 A, V
I
= 27 V 22.82425.2 V
ΔV
O
Line regulation
V
I
= 27 to 38 V 480
mV
V
I
= 30 to 36 V 240
ΔV
O
Load regulation
I
O
= 20 mA to 1.5 A 480
mV
I
O
= 2 A 300
I
Q
Quiescent current 8 mA
ΔI
Q
Quiescent current change
I
O
= 20 mA to 1 A 0.5
mA
V
I
= 27 to 38 V, I
O
= 20 mA 1
ΔV
O
/ΔT Output voltage drift I
O
= 5 mA, T
J
= 0 °C to 70 °C -1.5 mV/°C
eN Output noise voltage B = 10 Hz to 100 kHz 170 µV
SVR Supply voltage rejection f = 120 Hz 42 dB
V
I
Operating input voltage I
O
≤ 1 A 27 V
R
O
Output resistance f = 1 kHz 28 mΩ
I
sc
Short circuit current V
I
= 27 V 500 mA
I
scp
Short circuit peak current 3 A