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SPX1431 Datasheet, PDF (1/12 Pages) Sipex Corporation – Precision Adjustable Shunt Regulator | |||
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SPX1431
Precision Adjustable Shunt Regulator
FEATURES
â Trimmed Bandgap Reference to 0.4%
â Wide Operating Current 1mA to 150mA
â Extended Temperature Range:
-55°C to 125°C
â Low Temperature Coefficient 30 ppm/°C
â Offered in TO-92, SOIC, SOT-89,
SOT-23-5
â Improved Replacement in Performance for
LT1431
â Low Cost Solution
APPLICATIONS
â Battery Operating Equipment
â Adjustable Supplies
â Switching Power Supplies
â Error Amplifiers
â Single Supply Amplifier
â Monitors / VCRs / TVs
â Personal Computers
DESCRIPTION
The SPX1431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate
bandgap reference. The SPX1431 acts as an open-loop error amplifier with a 2.5V temperature
compensation reference. The SPX1431's thermal stability, wide operating current (150mA)
and temperature range (-55°C to 125°C) makes it suitable for a variety of applications that
require a low cost, high performance solution. SPX1431 tolerance of 0.4% 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 lines and contributes a significant cost
savings.
The output voltage may be adjusted to any value between VREF and 36 volts with two external
resistors. The SPX1431 is available in TO-92, SOIC-8, SOT-89, and SOT-23-5 packages.
BLOCK DIAGRAM
Cathode (K)
Reference
(R)
Rev. 08/13/02
+
-
2.5V
Anode (A)
SPX1431 Precision Adjustable Shunt Regulator
1
© Copyright 2002 Sipex Corporation
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