LD1084 SERIES
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ELECTRICAL CHARACT E R ISTICS OF LD1084# 120 (VI=15V, CI=CO=10µF,TA= -40 to125°C, unless
otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
ELECTRICAL CHARACTERISTICS OF LD1084 (VI=4.25V, CI=CO=10µF, TA= -40 to 125°C, unless
otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
O
Output Voltage IO=0mA TJ= 25°C 11.88 12 12.12 V
I
O
=0to5A VI= 13.6 to 30V (note 1) 11.76 12 12.24 V
∆V
O
Line Regulation IO=0mA VI=13.6to25V TJ= 25°C 2 25 mV
I
O
=0mA VI=13.6to25V 4 25 mV
∆V
O
Load Regulation IO=0to5A TJ= 25°C 12 36 mV
I
O
=0to5A 24 72 V
V
d
Dropout Voltage IO=5 A 1.3 1.5 V
I
q
Quiescent Current VI≤ 30V 5 10 mA
I
sc
Short Circuit Current VI-VO= 5V 5.5 6.5 A
V
I-VO
= 25V 0.5 0.7 A
Termal Regulation T
A
= 25°C, 30ms pulse 0.003 0.015 %/W
SVR Supply Voltage Rejection f = 120 Hz, C
O
=25µF, IO=5A
V
I
=17± 3V
54 66 dB
eN RMS Output Noise Voltage
(% of V
O
)
T
A
= 25°C f =10Hz to 10KHz 0.003 %
S Temperature Stability 0.5 %
S Long Term Stability T
A
= 125°C 1000Hrs 0.5 %
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
O
Output Voltage IO= 10mA TJ= 25°C 1.237 1.25 1.263 V
I
O
= 10mA to 5A VI= 2.85 to 30V
(note 1)
1.225 1.25 1.275 V
∆V
O
Line Regulation IO= 10mA VI= 2.85 to 16.5V TJ= 25°C 0.015 0.2 %
I
O
= 10mA VI= 2.85 to 16.5V 0.035 0.2 %
∆V
O
Load Regulation IO= 10mA to 5A TJ= 25°C 0.1 0.3 %
I
O
= 10mA to 5A 0.2 0.4 %
V
d
Dropout Voltage IO= 5A 1.3 1.5 V
I
O(min)
Minimum Load Current VI= 30V 3 10 mA
I
sc
Short Circuit Current VI-VO= 5V 5.5 6.5 A
V
I-VO
= 25V 0.5 0.7 A
Termal Regulation T
A
= 25°C, 30ms pulse 0.003 0.015 %/W
SVR Supply Voltage Rejection f = 120 Hz, C
O
=25µF, C
ADJ
=25µF,
I
O
=5A VI= 6.25 ± 3V
60 72 dB
I
ADJ
Adjust Pin Current VI= 4.25V IO=10mA 55 120 µA
∆I
ADJ
Adjust Pin Current Change IO= 10mA to 5A VI= 2.85 to 16.5V
(note 1)
0.2 5 µA
eN RMS Output Noise Voltage
(% of V
O
)
T
A
= 25°C f =10Hz to 10KHz 0.003 %
S Temperature Stability 0.5 %
S Long Term Stability T
A
= 125°C 1000Hrs 0.5 %