LX432_05 MICROSEMI [Microsemi Corporation], LX432_05 Datasheet

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LX432_05

Manufacturer Part Number
LX432_05
Description
Low Voltage Adjustable Precision Shunt Regulator
Manufacturer
MICROSEMI [Microsemi Corporation]
Datasheet
Copyright © 2000
Rev. 1.3, 2005-02-24
precision 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.
impedance for improved load regulation –
typical output impedance is 200mΩ. The
LX432 series operates with an operating
current as low as 80µA, making these
devices
micropower applications.
The LX432 series are low-voltage
These
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
TM
suitable
devices
for
offer
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
V
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.
IN
-40 to 85
portable
T
0 to 70
A
low
(°C)
D E S C R I P T I O N
LX432
output
and
Cathode
Anode
Package
Marking
LX432 to be used in the feedback loop of
isolated low voltage power supplies. 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 12.
or TO-92 packages, and is a drop-in
replacement for the TLV431 and SC431L
devices.
432C
432I
SC
P R O D U C T H I G H L I G H T
Low voltage operation enables the
The LX432 is offered in 3 lead SOT-23
P A C K A G E O R D E R I N F O
Integrated Products Division
®
Microsemi
GND
SC
RoHS Compliant / Pb-free
Reference
Transition DC: 0503
Low Voltage Adjustable Precision Shunt Regulator
LX432CSC
LX432ISC
Plastic SOT-23
3-Pin
P
RODUCTION
R1
R2
LP
RoHS Compliant / Pb-free
Transition DC: 0509
LX432CLP
LX432ILP
Plastic TO-92
3-Pin
D
V
ATA
Low Voltage Operation:
Initial Voltage Reference
Adjustable Output Voltage
Typical Output Dynamic
Sink Current Capability
Direct Alternative To
Low Voltage Adjustable
Instrumentation
Computers
Portable Equipment
1.24V Reference
Accuracy 1%
From VREF to 20V
Impedance Less Than
250mΩ
80µA To 20mA
TLV431
Power Supplies
KA
K E Y F E A T U R E S
A P P L I C A T I O N S
S
HEET
LX432
Page 1

Related parts for LX432_05

LX432_05 Summary of contents

Page 1

The LX432 series are low-voltage precision adjustable shunt regulators with a reference voltage of 1.24V. The output voltage may be set to any value between 1.24V and 20V ...

Page 2

Cathode to Anode Voltage (V )..................................................................-0.3V to +20V KA Reference Input Current (I ) .....................................................................-50µA to 10µA ...

Page 3

TM Unless otherwise specified, the following specifications apply over the operating ambient temperature for the LX432C with 0°C 70°C and the LX432I with -40°C < Parameter Reference Voltage Reference Voltage Drift (note 2) Ratio of V Change In ...

Page 4

TM 30 Unstable 0.001 * Unstable below 700µA as indicated † The unstable areas indicate loading conditions that may cause the device to oscillate Copyright © 2000 Rev. 1.3, 2005-02-24 ...

Page 5

TM 1.242 1.241 1.24 1.239 1.238 1.237 1.236 1.235 - Junction Temperature (°C) J Figure 3 – Reference Voltage vs. Junction Temperature 900 800 700 600 500 400 300 200 100 0 -100 Cathode Voltage (V) ...

Page 6

TM 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 Junction Temperature (°C) J Figure 7 – Dynamic Impedance vs. Junction Temperature 0.07 0.06 0.05 0.04 0.03 0.02 0. ...

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Input R1 I REF R2 V REF Figure ...

Page 8

110 / 220V AC C ontroller U C 384x / LX155x Figure 12 – LX432 In A Power Supply Isolated Feedback Application 0.1µF 500 LX432 Figure 13 – LX432 in a 3.3V to 2.7V Low Dropout Regulator ...

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TM 3-Pin Plastic SOT- 3-Pin Plastic TO- Copyright © 2000 Rev. 1.3, 2005-02-24 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Low ...

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TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...

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