Datasheet

DocID9035 Rev 10 7/16
LD1084 Electrical characteristics
5 Electrical characteristics
V
I
= 4.25 V, C
I
= C
O
= 10 µF, T
A
= -40 to 125 °C, unless otherwise specified.
Table 4. LD1084 electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
ref
Reference voltage
(1)
I
O
= 10 mA T
J
= 25 °C 1.237 1.25 1.263 V
I
O
= 10 mA to 3 A, V
I
= 2.85 to 30 V 1.225 1.25 1.275 V
ΔV
O
Line regulation
I
O
= 10 mA, V
I
= 2.85 to 16.5V, T
J
=
25 °C
0.015 0.2 %
I
O
= 10 mA, V
I
= 2.85 to 16.5 V 0.035 0.2 %
ΔV
O
Load regulation
I
O
= 10 mA to 5 A, T
J
= 25 °C 0.1 0.3 %
I
O
= 0 to 5 A 0.2 0.4 %
V
d
Dropout voltage I
O
= 5 A 1.3 1.5 V
I
O(min)
Minimum load current V
I
= 30 V 3 10 mA
I
sc
Short-circuit current
V
I
- V
O
= 5 V 5.5 6.5 A
V
I
- V
O
= 25 V 0.5 0.7 A
Thermal regulation T
A
= 25 °C, 30 ms pulse 0.003 0.015 %/W
SVR Supply voltage rejection
f = 120 Hz, C
O
= 25 µF,
C
ADJ
= 25 µF, I
O
= 5 A,
V
I
= 6.25 ± 3 V
60 72 dB
I
ADJ
Adjust pin current V
I
= 4.25 V, I
O
= 10 mA 55 120 μA
ΔI
ADJ
Adjust pin current change
(1)
I
O
= 10 mA to 5 A,
V
I
= 2.85 to 16.5 V
0.2 5 μA
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.