Datasheet

Refer to the test circuits, T
J
= 0 to 125 °C, V
I
= 14.5 V, I
O
= 500 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise
specified.
Table 13. Electrical characteristics of L7885C
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage
T
J
= 25 °C
8.2 8.5 8.8 V
V
O
Output voltage
I
O
= 5 mA to 1 A, V
I
= 11 to 21.5 V
8.1 8.5 8.9 V
V
O
Output voltage
I
O
= 1 A, V
I
= 21.5 to 26 V, T
J
= 25 °C
8.1 8.5 8.9 V
∆V
O
(1)
Line regulation
V
I
= 11 to 27 V, T
J
= 25 °C
160
mV
V
I
= 11.5 to 17.5 V, T
J
= 25 °C
80
∆V
O
(1)
Load regulation
I
O
= 5 mA to 1.5 A, T
J
= 25 °C
160
mV
I
O
= 250 to 750 mA, T
J
= 25 °C
80
I
d
Quiescent current
T
J
= 25 °C
8 mA
∆I
d
Quiescent current change
I
O
= 5 mA to 1 A
0.5
mA
V
I
= 11 to 26 V
1
∆V
O
/∆T
Output voltage drift
I
O
= 5 mA
-0.8 mV/°C
eN Output noise voltage
B = 10 Hz to 100 kHz, T
J
= 25 °C
55
µV/V
O
SVR Supply voltage rejection
V
I
= 12 to 22 V, f = 120 Hz
56 dB
V
d
Dropout voltage
I
O
= 1 A, T
J
= 25 °C
2 V
R
O
Output resistance f = 1 kHz 16 mΩ
I
sc
Short circuit current
V
I
= 35 V, T
J
= 25 °C
0.45 A
I
scp
Short circuit peak current
T
J
= 25 °C
2.2 A
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating
effects must be taken into account separately. Pulse testing with low duty cycle is used.
Note: Minimum load current for regulation is 5 mA.
L78
Electrical characteristics
DS0422 - Rev 36
page 16/55