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PDF LX432CLP Data sheet ( Hoja de datos )
| Número de pieza | LX432CLP | |
| Descripción | LOW VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS | |
| Fabricantes | Microsemi Corporation | |
| Logotipo |  |
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T H E I N F I N I T E P O W E R O F I N N O VAT I O N
LX432
LOW VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
PRODUCTION DATA SHEET
DESCRIPTION
The LX432 series are low-voltage pre-
cision adjustable shunt regulators
with a reference voltage of 1.24V. The
output voltage may be set to any value
between 1.24V and 20V by two external
resistors.
These devices offer low output im-
pedance for improved load regula-
tion — typical output impedance is
250mΩ. The LX432 series operates with
an operating current as low as 80µA,
making these devices suitable for por-
table and micropower applications.
Low voltage operation enables the
LX432 to be used in the feedback loop
of isolated low voltage power sup-
plies. The minimum output voltage is
determined by the LX432 output voltage
plus the forward voltage drop of the
opto-coupler LED (typically 1.24 + 1.4 =
2.64V minimum). See Figure 10.
The LX432 is offered in 3 and 5-pin
SOT-23 or TO-92 packages, and is a drop-
in replacement for the TLV431 and
SC431L devices.
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.
PRODUCT HIGHLIGHT
TYPICAL PROGRAMMABLE VOLTAGE
REFERENCE CIRCUIT
VIN
Cathode
LX432
Anode
Reference
R1
R2
KEY FEATURES
s Low Voltage Operation: 1.24V Reference
s Initial Voltage Reference Accuracy 1%
s Adjustable Output Voltage From V To 20V
REF
s Typical Output Dynamic Impedance Less
Than 250mΩ
s Sink Current Capability 80µA To 20mA
s Direct Alternative To TLV431
A P P L I C AT I O N S
s Low Voltage Adjustable Power Supplies
s Instrumentation
s Computers
s Portable Equipment
VKA
GND
Copyright © 1999
Rev. 1.0 9/99
TA (°C)
0 to 70
-40 to 85
PACKAGE ORDER INFORMATION
SC
Plastic
3-pin
SOT-23
SE
Plastic
5-pin
SOT-23
LP
Plastic
3-pin
TO-92
LX432CSC
LX432ISC
LX432CSE
LX432ISE
LX432CLP
LX432ILP
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. LX432CSET)
TO-92 (LP) package also available in ammo-pack.
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1
1 page  
PRODUCT DATABOOK 1996/1997
LOW VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
PRODUCTION DATA SHEET
LX432
CHARACTERISTIC CURVES
1.25
0.2
1.245
1.24
1.235
0.16
0.12
0.08
0.04
1.23
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TJ : Junction Temperature ( C)
FIGURE 1 — Reference Voltage vs. Junction Temperature
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TJ : Junction Temperature ( C)
FIGURE 2 — Reference Current vs. Junction Temperature
800
700
600
500
400
300
200
100
0
-100
-200
-1 -0.5 0 0.5 1 1.5
TJ : Junction Temperature (V)
FIGURE 3 — Cathode Current vs. Cathode Voltage
-1.200
-1.000
-0.800
-0.600
-0.400
-0.200
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TJ : Junction Temperature ( C)
FIGURE 4 — ∆VREF / ∆VKA vs. Junction Temperature
Copyright © 1999
Rev. 1.0 9/99
5
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| Número de pieza | Descripción | Fabricantes |
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