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What is LX6431AILP?

This electronic component, produced by the manufacturer "Microsemi Corporation", performs the same function as "PRECISION PROGRAMMABLE REFERENCES".


LX6431AILP Datasheet PDF - Microsemi Corporation

Part Number LX6431AILP
Description PRECISION PROGRAMMABLE REFERENCES
Manufacturers Microsemi Corporation 
Logo Microsemi Corporation Logo 


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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
LX6431/LX6431A/LX6431B
PRECISION PROGRAMMABLE REFERENCES
PRODUCTION DATA SHEET
DESCRIPTION
The LX6431 series precision adjustable
three terminal shunt voltage regulators are
pin-to-pin compatible with the industry
standard TL431, but with significant
improvements. The LX6431 design has
eliminated regions of instability common
to older generation shunt regulator
products like the TL431. Designs are
made simpler by eliminating the task of
insuring capacitive loads, and output
voltage and cathode currents don't
combine for unstable operation. The
capacitor value is chosen simply to give
the best load transient response without
the possibility of instability. A lower
reference input current allows the use of
higher value reference divider resistors,
reducing the current drain from batteries
in portable equipment as well as reducing
the voltage programming errors due to
the impedance of the divider network
(See Product Highlight figure below). In
addition, the LX6431B has an improved
initial accuracy of 0.4%, and the output
voltage is programmable by using two
external resistors from 2.5V to 36V.
These devices offer low output
impedance for improved load regulation.
The typical output impedance of these
devices is 100m. The reduced
reference input bias current and minimum
operating currents make these devices
suitable for portable and micropower
applications.
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
KEY FEATURES
s Unconditionally Stable For All Cathode To
Anode Capacitance Values
s Reduced Reference Input Current Allowing
The Use Of Higher Value Divider Resistors
(0.5µA Max.)
s Initial Voltage Reference Accuracy Of 0.4%
(LX6431B)
s Sink Current Capability 0.6mA to 100mA
s Typical Output Dynamic Impedance Less
Than 100m
s Adjustable Output Voltage From 2.5V to
36V
20
18
16
14
12
10
8
6
4
2
0
2.5
PRODUCT HIGHLIGHT
O U T P U T V O LTA G E E R R O R D U E T O I REF
TYPICAL PROGRAMMABLE VOLTAGE
REFERENCE CIRCUIT
VIN
LX6431
VKA
R1
R2
3.75 5
6.25 7.5 8.75 10 11.25
(VKA) Output Voltage - (V)
12.5
13.75
15
GND
PA C K A G E O R D E R I N F O R M AT I O N
TA (°C)
Initial
Tolerance
DM
Plastic
8-pin
SOIC
LP
Plastic
3-pin
TO-92
2% LX6431CDM
LX6431CLP
0 to 70
1%
LX6431ACDM
LX6431ACLP
0.4%
LX6431BCDM
LX6431BCLP
2% LX6431IDM
LX6431ILP
-40 to 85
1%
LX6431AIDM
LX6431AILP
0.4%
LX6431BIDM
LX6431BILP
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. LX5212CDPT)
TO-92 (LP) package also available in ammo-pack.
Copyright © 1999
Rev. 1.4 6/99
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1

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LX6431AILP equivalent
PRODUCT DATABOOK 1996/1997
LX6431/LX6431A/LX6431B
PRECISION PROGRAMMABLE REFERENCES
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES
FIGURE 1. — REFERENCE VOLTAGE
vs. FREE-AIR TEMPERATURE
2.52
VREF = VKA
IK = 10mA
2.51
2.50
2.49
FIGURE 2. — REFERENCE CURRENT
vs. FREE-AIR TEMPERATURE
0.15
IK = 10mA
R1 = 10kW
0.14
0.13
0.12
0.11
2.48
-50
-25 0 25 50 75 100 125
(TA) Ambient Temperature - (°C)
0.1
-50
-25 0 25 50 75 100 125
(TA) Ambient Temperature - (°C)
FIGURE 3. — CATHODE CURRENT vs. CATHODE VOLTAGE
800
VKA = VREF
TA = 25°C
600
400
200
0
-200
-2
-1 0 1 2 3
(VKA) Cathode Voltage - (V)
4
FIGURE 4. — OFF-STATE CATHODE CURRENT
vs. FREE-AIR TEMPERATURE
0.8
0.7
VKA = 36V
VREF = 0
0.6
0.5
0.4
0.3
0.2
0.1
0
-50 -25 0 25 50 75 100 125
(TA) Ambient Temperature - (°C)
Copyright © 1999
Rev. 1.4 6/99
5


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