Datasheet

DocID6738 Rev 27 7/27
LD1085 Electrical characteristics
5 Electrical characteristics
V
I
= 4.8 V, C
I
= C
O
=10 µF, T
A
= -40 to 125 °C, unless otherwise specified.
Table 3. Electrical characteristics of LD1085#18
Symbol Parameter Test condition Min. Typ. Max. Unit
V
O
Output voltage
(1)
I
O
= 0 mA, T
J
= 25°C 1.782 1.8 1.818 V
I
O
= 0 to 3 A, V
I
= 3.4 to 30 V 1.764 1.8 1.836 V
ΔV
O
Line regulation
I
O
= 0 mA, V
I
= 3.4 to 18 V T
J
= 25°C 0.2 4 mV
I
O
= 0 mA, V
I
= 3.4 to 15 V 0.4 4 mV
ΔV
O
Load regulation
I
O
= 0 to 3 A, T
J
= 25°C 2 10 mV
I
O
= 0 to 3 A 4 20 mV
V
d
Dropout voltage I
O
= 3 A 1.3 1.5 V
I
q
Quiescent current V
I
≤ 30 V 5 10 mA
I
sc
Short-circuit current
V
I
- V
O
= 5 V 3.2 4.5 A
V
I
- V
O
= 25 V 0.2 0.5 A
Thermal regulation T
A
= 25°C, 30 ms pulse 0.008 0.04 %/W
SVR Supply voltage rejection
f = 120 Hz, C
O
= 25 µF, I
O
= 3 A
V
I
= 7.5 ± 3 V
60 72 dB
eN
RMS output noise voltage (% of
V
O
)
T
A
= 25°C, f =10 Hz to 10 kHz 0.003 %
S Temperature stability 0.5 %
S Long term stability T
A
= 125°C, 1000 Hrs 0.5 %
1. See short-circuit current curve for available output current at fixed dropout.