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LD1085C Datasheet(Fiches technique) 5 Page - STMicroelectronics

Numéro de pièce LD1085C
Description  3A LOW DROP POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED
Télécharger  15 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
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LD1085C SERIES
5/15
ELECTRICAL CHARACTERISTICS OF LD1085CDT25 (VI=5.5V, 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.
ELECTRICAL CHARACTERISTICS OF LD1085CDT285 (VI=5.85V, 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
VO
Output Voltage
IO = 0 mA
TJ = 25°C
2.45
2.5
2.55
V
IO = 0 to 3A VI = 4.1 to 30V (note 1)
2.425
2.5
2.575
V
∆V
O
Line Regulation
IO = 0 mA
VI = 4.1 to 18V
TJ = 25°C
0.2
5
mV
IO = 0 mA
VI = 4.1 to 18V
0.4
5
mV
∆V
O
Load Regulation
IO = 0 to 3A TJ = 25°C
2
10
mV
IO = 0 to 3A
4
20
V
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
Termal Regulation
TA = 25°C, 30ms pulse
0.008
0.04
%/W
SVR
Supply Voltage Rejection
f = 120 Hz,
CO = 25 µF, 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
%
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VO
Output Voltage
IO = 0 mA
TJ = 25°C
2.793
2.85
2.907
V
IO = 0 to 3A VI = 4.5 to 30V (note 1)
2.765
2.85
2.935
V
∆V
O
Line Regulation
IO = 0 mA
VI = 4.5 to 18V
TJ = 25°C
0.2
6
mV
IO = 0 mA
VI = 4.5 to 18V
0.5
6
mV
∆V
O
Load Regulation
IO = 0 to 3A TJ = 25°C
3
15
mV
IO = 0 to 3A
7
20
V
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
Termal Regulation
TA = 25°C, 30ms pulse
0.008
0.04
%/W
SVR
Supply Voltage Rejection
f = 120 Hz,
CO = 25 µF, IO = 3A
VI = 7.85 ± 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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