LX432_05 Datasheet, PDF (1/10 Pages) Microsemi Corporation – Low Voltage Adjustable Precision Shunt Regulator

LX432
TM
®
Low Voltage Adjustable Precision Shunt Regulator
PRODUCTION DATA SHEET
DESCRIPTION
The LX432 series are low-voltage Low voltage operation enables the
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 See figure 12.
LX432 series operates with an operating The LX432 is offered in 3 lead SOT-23
current as low as 80µA, making these or TO-92 packages, and is a drop-in
devices suitable for portable and replacement for the TLV431 and SC431L
micropower applications.
devices.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
V_IN
R1
Cathode
LX432
Reference
Anode
R2
KEY FEATURES
ƒ Low Voltage Operation:
1.24V Reference
ƒ Initial Voltage Reference
Accuracy 1%
ƒ Adjustable Output Voltage
From VREF to 20V
ƒ Typical Output Dynamic
Impedance Less Than
250mΩ
ƒ Sink Current Capability
80µA To 20mA
ƒ Direct Alternative To
TLV431
APPLICATIONS
ƒ Low Voltage Adjustable
Power Supplies
ƒ Instrumentation
ƒ Computers
ƒ Portable Equipment
V_KA
GND
Copyright © 2000
Rev. 1.3, 2005-02-24
PACKAGE ORDER INFO
T_A (°C)
SC
Package
Marking
Plastic SOT-23
Plastic TO-92
SC 3-Pin
LP 3-Pin
RoHS Compliant / Pb-free RoHS Compliant / Pb-free
Transition DC: 0503
Transition DC: 0509
0 to 70
432C
LX432CSC
LX432CLP
-40 to 85
432I
LX432ISC
LX432ILP
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX432CSC-TR)
TO-92 (LP) package also available in ammo-pack.
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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