SPX1431_07 Datasheet, PDF (1/12 Pages) Sipex Corporation – Precision Adjustable Shunt Regulator

SPX1431
Precision Adjustable Shunt Regulator
FEATURES
■ Trimmed Bandgap Reference to 0.4%
■ Wide Operating Current 1mA to 150mA
■ Extended Temperature Range:
-55°C to 125°C
■ Low Temperature Coefficient 30 ppm/°C
CATHODE 1
ANODE 2
ANODE 3
SPX1431
8 Pin nSOIC
8 REF
7 ^ANODE
6 ANODE
■ Offered in TO-92, SOIC, SOT-89,
SOT-23-5
Avail^Na^/Cble⁴ in Lead Free Pack⁵a^Ng^/Cing
■ Improved Replacement in Performance for
LT1431
Now Available in Lead Free Packaging
■ Low Cost Solution
APPLICATIONS
■ Battery Operating Equipment
■ Adjustable Supplies
■ Switching Power Supplies
■ Error Amplifiers
■ Single Supply Amplifier
■ Monitors / VCRs / TVs
■ 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 V_REF 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)
Mar13-07
Reference
(R)
+
-
2.5V
Anode (A)
SPX1431 Precision Adjustable Shunt Regulator

© 2007 Sipex Corporation