SPX2431L Datasheet, PDF (1/11 Pages) Sipex Corporation – Precision Adjustable Shunt Regulator

®
SPX2431L
Precision Adjustable Shunt Regulator
FEATURES
■ Trimmed Bandgap to 0.5% and 1.0%
■ Wide Operating Current 160µA to 100mA
■ Extended Temperature Range:
0°C to 105°C
■ Low Temperature Coefficient 30 ppm/°C
■ Offered in TO-92, SOIC, SOT-23-3
■ Replacement for TL431 and AS2431L
■ Low Cost Solution
APPLICATIONS
■ Battery Operating Equipment
■ Adjustable Supplies
■ Switching Power Supplies
■ Error Amplifiers
■ Single Supply Amplifier
■ Monitors / VCRs / TVs
■ Personal Computers
DESCRIPTION
The SPX2431L is a 3-terminal adjustable shunt voltage regulator providing a highly accurate
bandgap reference (0.5%) and extremely low operating current (100µA). The SPX2431L acts
as an open-loop error amplifier with a 2.5V temperature compensated reference. The
SPX2431L's thermal stability, wide operating current (100mA) and temperature range (0°C to
150°C) makes it suitable for a variety of applications. SPX2431LA tolerance of 0.5% is proven
to be sufficient to overcome all 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.
In the standard shunt configuration, the combination of a low temperature coefficient, sharp
turn on characteristics, low output impedance, and programmable output voltage makes this
precision reference an excellent error amplifier. The SPX2431L is available in TO-92, SOIC-8,
and SOT-23-3 package.
BLOCK DIAGRAM
Cathode (K)
Reference
(R)
Rev. 08/13/02
+
-
2.5V
Anode (A)
SPX2431L Precision Adjustable Shunt Regulator
1
© Copyright 2002 Sipex Corporation