SPX1431 Datasheet, PDF (1/11 Pages) Sipex Corporation – Precision Adjustable Shunt Regulator

SPX1431
Precision Adjustable Shunt Regulator
April 2013
GENERAL 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
SOIC-8 and SOT-89-3 packages.
APPLICATIONS
• Battery Operating Equipment
• Adjustable Supplies
• Switching Power Supplies
• Error Amplifiers
• Single Supply Amplifier
• Monitors / VCRs / TVs
• Personal Computers
Rev. 2.0.1
FEATURES
• Trimmed Bandgap Reference to 0.4%
• Wide Operating Current 1mA to 150mA
• -55°C to 125°C Extended Temperature
Range
• 30 ppm/°C Low Temperature
Coefficient
• Improved Replacement in Performance
for LT1431
• Low Cost Solution
• Offered in SOIC-8 and SOT-89
TYPICAL APPLICATION DIAGRAM
Fig. 1: SPX1431 Block Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. [phone] – Fax. [phone]