Electrical characteristics L79xxC
10/24 Doc ID 2149 Rev 21
Refer to the test circuits, T
J
= 0 to 125 °C, V
I
= -23 V, I
O
= 500 mA, C
I
= 2.2 µF, C
O
= 1 µF
unless otherwise specified.
Table 7. Electrical characteristics of L7915C
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage T
J
= 25°C -14.4 -15 -15.6 V
V
O
Output voltage
I
O
= -5 mA to -1 A, P
O
≤ 15 W
V
I
= -18.5 to -30 V
-14.3 -15 -15.7 V
ΔV
O
(1)
Line regulation
V
I
= -17.5 to -30 V, T
J
= 25°C 300
mV
V
I
= -20 to -26 V, T
J
= 25°C 150
ΔV
O
(1)
Load regulation
I
O
= 5 mA to 1.5 A, T
J
= 25°C 300
mV
I
O
= 250 to 750 mA, T
J
= 25°C 150
I
d
Quiescent current T
J
= 25°C 3 mA
ΔI
d
Quiescent current change
I
O
= 5 mA to 1 A 0.5
mA
V
I
= -18.5 to -30 V 1
ΔV
O
/ΔT Output voltage drift I
O
= 5 mA -0.9 mV/°C
eN Output noise voltage B = 10Hz to 100kHz, T
J
= 25°C 250 µV
SVR Supply voltage rejection ΔV
I
= 10 V, f = 120Hz 54 60 dB
V
d
Dropout voltage I
O
= 1 A, T
J
= 25°C, ΔV
O
= 100 mV 1.1 V
I
sc
Short circuit current 1.3 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.
