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LD1085 Datasheet(PDF) 6 Page - STMicroelectronics

Part No. LD1085
Description  3A Low drop positive voltage regulator adjustable and fixed
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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LD1085 Datasheet(HTML) 6 Page - STMicroelectronics

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Electrical characteristics
LD1085 series
6/27
4
Electrical characteristics
Table 3.
Electrical characteristics of LD1085#15
(VI=4.5V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified).
Symbol
Parameter
Test
Min.
Typ.
Max.
Unit
VO
Output voltage (1)
1.
See short-circuit current curve for available output current at fixed dropout.
IO = 0 mA, TJ = 25°C
1.485
1.5
1.515
V
IO = 0 to 3A, VI = 3.1 to 30V
1.47
1.5
1.53
V
ΔVO
Line Regulation
IO = 0 mA, VI = 3.1 to 18V, TJ = 25°C
0.2
4
mV
IO = 0 mA, VI = 3.1 to 15V
0.4
4
mV
ΔVO
Load Regulation
IO = 0 to 3A, TJ = 25°C
2
10
mV
IO = 0 to 3A
4
20
mV
Vd
Dropout Voltage
IO =3 A
1.3
1.5
V
Iq
Quiescent Current
VI ≤30V
5
10
mA
Isc
Short Circuit Current
VI - VO = 5V
3.2
4.5
A
VI - VO = 25V
0.2
0.5
A
Thermal Regulation
TA = 25°C, 30ms pulse
0.008
0.04
%/W
SVR
Supply Voltage Rejection
f = 120 Hz, CO = 25µF, IO = 3A
VI = 7.5 ± 3V
60
72
dB
eN
RMS Output Noise Voltage (%
of VO)
TA = 25°C, f =10Hz to 10KHz
0.003
%
S
Temperature Stability
0.5
%
S
Long Term Stability
TA = 125°C, 1000Hrs
0.5
%


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