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PDF LDR2533K7-R Data sheet ( Hoja de datos )

Número de pieza LDR2533K7-R
Descripción VERY LOW DROP DUAL VOLTAGE REGULATOR
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



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No Preview Available ! LDR2533K7-R Hoja de datos, Descripción, Manual

LDRxxyy
VERY LOW DROP
DUAL VOLTAGE REGULATOR
s OUTPUT CURRENT 1 UP TO 500mA
s OUTPUT CURRENT 2 UP TO 1.0A
s LOW DROPOUT VOLTAGE 1
(0.3V @ IO =500mA)
s LOW DROPOUT VOLTAGE 2
(0.4V @ IO =1A)
s VERY LOW SUPPLY CURRENT (TYP.50µA
IN OFF MODE, 1.6mA MAX IN ON MODE)
s LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
s OUTPUT VOLTAGE AVAILABILITY FOR
EACH REGULATOR: 1.8V, 2.5V, 3.3V
s INTERNAL CURRENT AND THERMAL LIMIT
s STABLE WITH LOW VALUE (MIN 4.7µF)
AND LOW E.S.R. OUTPUT CAPACITORS
s SUPPLY VOLTAGE REJECTION: 70dB (TYP.)
s TEMPERATURE RANGE (-40°C TO 125°C)
DESCRIPTION
The LDRxxyy is a Very Low Drop Dual Voltage
Regulator available in PPAK for the version
without inhibit and in SPAK-7L for the version with
the shutdown feature. The very low drop-voltage
Figure 1: Block Diagram
SPAK-7L
PPAK
(0.5V) and the very low supply current make it
particularly suitable for low noise and low power
applications such as PDA, MICRODRIVE and
other data storage applications while the used
high voltage technology makes this device
suitable for consumer applications such as
MONITORS AND SET-TOP-BOX. For each VO a
Shutdown Logic Control function is available (TTL
compatible) to decrease the total power
consumption.
V VI1 POWER 1
O1
INH1
START UP 1
BAND GAP 1
DRIVER 1
+
-
ERROR
AMPLIFIER 1
THERMAL 1
August 2004
INH2
START UP 2
BAND GAP 2
VI2
THERMAL 2
+
-
ERROR
AMPLIFIER 2
DRIVER 2
POWER 2
VO2
Rev. 2
1/13

1 page




LDR2533K7-R pdf
LDRxxyy
Figure 10: Line Regulation (VO2) vs Temperature
Figure 13: Short Circuit Current (VO2) vs Drop
Voltage
Figure 11: Load Regulation (VO2) vs
Temperature
Figure 14: Inhibit Voltage vs Temperature
Figure 12: Short Circuit Current (VO1) vs Drop
Voltage
Figure 15: One Channel Inhibit Current vs
Temperature
5/13

5 Page





LDR2533K7-R arduino
DIM.
A
C
D
N
T
Ao
Bo
Ko
Po
P
LDRxxyy
Tape & Reel DPAK-PPAK MECHANICAL DATA
MIN.
12.8
20.2
60
6.80
10.40
2.55
3.9
7.9
mm.
TYP
13.0
6.90
10.50
2.65
4.0
8.0
MAX.
330
13.2
22.4
7.00
10.60
2.75
4.1
8.1
MIN.
0.504
0.795
2.362
0.268
0.409
0.100
0.153
0.311
inch
TYP.
0.512
0.272
0.413
0.104
0.157
0.315
MAX.
12.992
0.519
0.882
0.2.76
0.417
0.105
0.161
0.319
11/13

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