LX432
ꢀꢁꢂꢃꢁꢂꢁꢄꢅꢆ
Low Voltage Adjustable Precision Shunt Regulator
A
M I C R O S E M I
C O M P A N Y
PRODUCTION DATA SHEET
The LX432 series are low-voltage
Low voltage operation enables the
Low Voltage Operation:
1.24V Reference
Initial Voltage Reference
Accuracy 1%
Adjustable Output Voltage
From VREF to 20V
Typical Output Dynamic
Impedance Less Than
250mΩ
Sink Current Capability
80µA To 20mA
Direct Alternative To
TLV431
precision adjustable shunt regulators with LX432 to be used in the feedback loop of
a reference voltage of 1.24V. The output isolated low voltage power supplies. The
voltage may be set to any value between minimum output voltage is determined by
1.24V and 20V by two external resistors. the LX432 output voltage plus the forward
These devices offer low output voltage drop of the opto-coupler LED
impedance for improved load regulation – (typically 1.24 + 1.4 = 2.64V minimum).
typical output impedance is 200mΩ. The
LX432 series operates with an operating
current as low as 80µA, making these
devices suitable for portable and
micropower applications.
Mcrosemi
See figure 12.
.
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 MICROSEMI’s website: http://www.microsemi.com
Low Voltage Adjustable
Power Supplies
Instrumentation
Computers
Portable Equipment
VIN
VKA
R1
Cathode
Reference
LX432
Anode
R2
GND
Plastic SOT-23
3-Pin
Plastic SOT-23
5-Pin
Plastic TO-92
3-Pin
SC / SE
Package Marking
T ( C)
°
A
SC
SE
LP
0 to 70
-40 to 85
432C
432I
LX432CSC
LX432ISC
LX432CSE
LX432ISE
LX432CLP
LX432ILP
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX432CSET)
TO-92 (LP) package also available in ammo-pack.
Copyright 2000
Rev. 1.2c, 2001-04-11
Microsemi
Page 1
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570