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PDF LD1585C Data sheet ( Hoja de datos )

Número de pieza LD1585C
Descripción 5A LOW DROPOUT FAST RESPONSE POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED
Fabricantes ST Microelectronics 
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No Preview Available ! LD1585C Hoja de datos, Descripción, Manual

LD1585C
SERIES
5A LOW DROPOUT FAST RESPONSE
POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED
s TYPICAL DROPOUT 1.2V
s FAST TRANSIENT RESPONSE
s THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5V 1.8V, 2.5V, 2.85V,
3.3V, 5V, 8V, 9V, 12V.
s GUARANTEED OUTPUT CURRENT UP TO
5A
s OUPUT TOLERANCE ±1% AT 25°C AND
±2% IN FULL TEMPERATURE RANGE
s INTERNAL POWER AND THERMAL LIMIT
s WIDE OPERATING TEMPERATURE RANGE
0°C TO 125°C
s PACKAGE AVAILABLE : TO-220, D2PAK,
D2PAK/A
s PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
DESCRIPTION
The LD1585C is a LOW DROP Voltage Regulator
able to provide up to 5A of Output Current.
Dropout is guaranteed at a maximum of 1.4V at
the maximum output current, decreasing at lower
loads. The device has been improved to be
utilized in low voltage applications where transient
response and minimum input voltage are critical.
The most important feature of the device consist in
lower dropout voltage and very fast transient
TO-220
D2PAK
D2PAK/A
response. A 2.85V output version is suitable for
SCSI-2 active termination. Unlike PNP regulators,
where a part of the output current is wasted as
quiescent current, the LD1585C quiescent current
flows into the load, so increase efficiency. Only a
10µF minimum capacitor is need for stability.
The device is supplied in TO-220, D2PAK and
D2PAK/A. On chip trimming allows the regulator to
reach a very tight output voltage tolerance, within
±1% at 25°C.
SCHEMATIC DIAGRAM
September 2003
1/17

1 page




LD1585C pdf
LD1585C SERIES
ELECTRICAL CHARACTERISTICS OF LD1585#25 (VI=5.5V, CI = CO =10µF, TJ = 0 to 125°C, unless
otherwise specified.)
Symbol
Parameter
Test Conditions
VO
VO
VO
Vd
Iq
Isc
SVR
eN
S
S
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
Short Circuit Current
Termal Regulation
Supply Voltage Rejection
RMS Output Noise Voltage
(% of VO)
Temperature Stability
Long Term Stability
IO = 0 mA TJ = 25°C
IO = 0 to 5A VI = 4 to 25V (note 1)
IO = 0 mA VI = 4 to 16V TJ = 25°C
IO = 0 mA VI = 4 to 16V
IO = 0 to 5A TJ = 25°C
IO = 0 to 5A
IO =5 A
VI 25V
VI - VO = 5.5V
TJ = 25°C, 30ms pulse
f = 120 Hz, CO = 25 µF, IO = 5A
VI - VO = 3 ± 1V
TJ = 25°C f =10Hz to 10KHz
TJ = 125°C 1000Hrs
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Min.
2.475
2.45
5.5
60
Typ.
2.5
2.5
0.005
0.005
0.05
0.05
1.2
5
7
0.004
75
Max.
2.525
2.55
0.2
0.2
0.3
0.5
1.4
10
0.02
Unit
V
V
mV
mV
V
mA
A
%/W
dB
0.003
%
0.5
0.03 1
%
%
ELECTRICAL CHARACTERISTICS OF LD1585#285 (VI=5.85V, CI = CO =10µF, TJ = 0 to 125°C, unless
otherwise specified.)
Symbol
Parameter
Test Conditions
VO
VO
VO
Vd
Iq
Isc
SVR
eN
S
S
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
Short Circuit Current
Termal Regulation
Supply Voltage Rejection
RMS Output Noise Voltage
(% of VO)
Temperature Stability
Long Term Stability
IO = 0 mA TJ = 25°C
IO = 0 to 5A VI = 4.5 to 30V (note 1)
IO = 0 mA VI = 4.5 to 18V TJ = 25°C
IO = 0 mA VI = 4.5 to 18V
IO = 0 to 5A TJ = 25°C
IO = 0 to 5A
IO =5 A
VI 25V
VI - VO = 5.5V
TJ = 25°C, 30ms pulse
f = 120 Hz, CO = 25 µF, IO = 5A
VI - VO = 3 ± 1V
TJ = 25°C f =10Hz to 10KHz
TJ = 125°C 1000Hrs
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Min.
2.821
2.793
5.5
60
Typ.
2.85
2.85
0.005
0.005
0.05
0.05
1.2
5
7
0.004
75
Max.
2.879
2.907
0.2
0.2
0.3
0.5
1.4
10
0.02
0.003
0.5
0.03
1
Unit
V
V
mV
mV
V
mA
A
%/W
dB
%
%
%
5/17

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LD1585C arduino
Figure 13 : Reference Voltage vs Temperature
LD1585C SERIES
Figure 16 : Supply Voltage Rejection vs Output
Current
Figure 14 : Minimum Load Current vs
Temperature
Figure 17 : Supply Voltage Rejection vs
Frequency
Figure 15 : Supply Voltage Rejection vs Output
Current
Figure 18 : Supply Voltage Rejection vs
Frequency
11/17

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