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PDF SPX431L Data sheet ( Hoja de datos )
| Número de pieza | SPX431L | |
| Descripción | Precision Adjustable Shunt Regulator | |
| Fabricantes | Exar | |
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SPX431L
Precision Adjustable Shunt Regulator
July 2013
Rev. 2.0.1
GENERAL DESCRIPTION
The SPX431L is a 3-terminal adjustable shunt
voltage regulator providing a highly accurate
bandgap reference. The SPX431L acts as an
open-loop error amplifier with a 2.5V
temperature compensation reference. The
SPX431L’s thermal stability, wide operating
current (100mA) and temperature range (0°C
to 105°C) makes it suitable for a variety of
applications that require a low cost, high
performance solution. SPX431L tolerance of
0.5% is proven to be sufficient to overcome all
of the other errors in the system to virtually
eliminate the need for trimming in the power
supply manufacturer's assembly line and
contribute a significant cost savings.
The output voltage may be adjusted to any
value between VREF and 20V with two
external resistors. The SPX431L is available in
TO-92, and SOT-89 packages.
APPLICATIONS
• Battery Operating Equipment
• Adjustable Supplies
• Switching Power Supplies
• Error Amplifiers
• Single Supply Amplifier
• Monitors / VCRs / TVs
• Personal Computers
FEATURES
• Tight Voltage Tolerance 0.5% at 10mA
• Wide Operating Current 1mA to 100mA
• Extended Temperature Range:
0°C to 105°C
• Low Temperature Coefficient 30 ppm/°C
• Improved Replacement in Performance
for TL431 and AS431
• Low Cost Solution
TYPICAL BLOCK DIAGRAM
Fig. 1: SPX431L Precision Adjustable Shunt Regulator
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
1 page  
SPX431L
Precision Adjustable Shunt Regulator
Fig. 9 Low Frequency Dynamic Output Impedance
VS TAMBIENT
Fig. 10 Small Signal Gain and Phase VS Frequency;
IK = 10mA, TA = 25°C
Fig. 11 Test Circuit for Gain and Phase Frequency
Response
Fig. 2 FZ = 100kHz, IK = 10mA, TA = 25°C
Fig. 33 Test Circuit for Pulse Response
Fig. 44 Stability Boundry Conditions
© 2013 Exar Corporation
5/11
Rev. 2.0.1
5 Page 
SPX431L
Precision Adjustable Shunt Regulator
REVSION HISTORY
Revision
2.0.0
2.0.1
Date
06/12/2012
07/19/2013
Description
Reformatted Datasheet. Corrected Package Drawing
Update package marking information and updated corporate logo.
FOR FURTHER ASSISTANCE
Email:
Exar Technical Documentation:
http://www.exar.com/TechDoc/default.aspx?
EXAR CORPORATION
HEADQUARTERS AND SALES OFFICES
48720 Kato Road
Fremont, CA 94538 – USA
Tel.: +1 (510) 668-7000
Fax: +1 (510) 668-7030
www.exar.com
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve
design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein,
conveys no license under any patent or other right, and makes no representation that the circuits are free of patent
infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a
user’s specific application. While the information in this publication has been carefully checked; no responsibility, however,
is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or
malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its
safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in
writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all
such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
© 2013 Exar Corporation
11/11
Rev. 2.0.1
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SPX431L.PDF ] | |
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