lx432 Microsemi Corporation, lx432 Datasheet

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lx432

Manufacturer Part Number
lx432
Description
Low Voltage Adjustable Precision Shunt Regulators
Manufacturer
Microsemi Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
lx432CSC
Manufacturer:
MOLEX
Quantity:
35 474
Part Number:
lx432ISC
Manufacturer:
MSC
Quantity:
20 000
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

lx432 Summary of contents

Page 1

... T (° - 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. Copyright © 2000 Rev. 1.3, 2005-02-24 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Low Voltage Adjustable Precision Shunt Regulator ® ...

Page 2

... Integrated Products Division RODUCTION ATA HEET REF 1 3 CATHODE – 3-P ACKAGE ATHODE 2. A NODE – 3-P ACKAGE IN RoHS / Pb-free 100% Matte Tin Lead Finish (All Views Top View) LX432 ANO DE Page 2 ...

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 Cathode REF Voltage Change (note 3) Reference Terminal Current ...

Page 4

... Low Voltage Adjustable Precision Shunt Regulator ® STABILITY BOUNDARY CONDITION† Stable REF * 0.010 0.100 C - Load Capacitance (uF) L Figure 2 – Stability Microsemi Integrated Products Division LX432 D S RODUCTION ATA HEET 1.000 10.000 . Page 4 ...

Page 5

... Figure 4 – Reference Current vs. Junction Temperature -1.2 -1 -0.8 -0.6 -0.4 -0.2 0 -50 Figure 6 – ∆V Microsemi Integrated Products Division LX432 D S RODUCTION ATA HEET 100 125 T : Junction Temperature (° 100 125 Junction Temperature (° ∆V vs. Junction Temperature REF ...

Page 6

... Figure 8 – Minimum Cathode Current for Regulation vs. 350 300 250 200 150 100 125 10 Figure 10 – Equivalent Input Noise Voltage vs. Frequency Microsemi Integrated Products Division RODUCTION ATA HEET 100 T : Junction Temperature (°C) J Junction Temperature 100 1K 10K Frequency (Hz) LX432 125 100K Page 6 ...

Page 7

... Input REF Figure 11 – Test Circuit For Input > REF ⎞ ⎟ × REF ⎠ Microsemi Integrated Products Division LX432 D S RODUCTION ATA HEET V KA REF OFF Figure 13 – Test Circuit For I OFF Page 7 ...

Page 8

... 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 Application Copyright © 2000 Rev. 1.3, 2005-02-24 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Low Voltage Adjustable Precision Shunt Regulator ® ...

Page 9

... Lead dimension M I ILLIMETERS NCHES MIN MAX MIN MAX 4.45 5.20 0.175 0.205 4.32 5.33 0.170 0.210 3.18 4.19 0.125 0.165 0.41 0.55 0.016 0.022 0.41 0.48 0.016 0.019 1.15 1.39 0.045 0.055 2.42 2.66 0.095 0.105 0.39 0.50 0.015 0.020 12.70 - 0.500 2.05 2.66 0.080 0.105 3.43 - 0.135 these shall not exceed Lead dimension LX432 - - Page 9 ...

Page 10

... Copyright © 2000 Rev. 1.3, 2005-02-24 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Low Voltage Adjustable Precision Shunt Regulator ® P RODUCTION Microsemi Integrated Products Division LX432 D S ATA HEET Page 10 ...

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