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LD1085XX25 Fiches technique(PDF) 8 Page - STMicroelectronics

No de pièce LD1085XX25
Description  3 A low drop positive voltage regulator adjustable and fixed
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LD1085XX25 Fiches technique(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
LD1085xx
8/27
Table 5.
Electrical characteristics of LD1085#18
(VI = 4.8 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified).
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VO
Output voltage (1)
IO = 0 mA, TJ = 25°C
1.782
1.8
1.818
V
IO = 0 to 3A, VI = 3.4 to 30V
1.764
1.8
1.836
V
ΔVO
Line regulation
IO = 0 mA, VI = 3.4 to 18V TJ = 25°C
0.2
4
mV
IO = 0 mA, VI = 3.4 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
%
1.
See short-circuit current curve for available output current at fixed dropout.


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