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SPX1432 Datasheet PDF : 7 Pages
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SPX1432
1.24V Precision Adjustable Shunt Regulator
FEATURES
■ Reference Voltage: 1.24V
■ Initial Accuracy: 0.5%
■ Wide Operating Current, 60µA to 100mA
■ Ultra Low Reference Input Current, 100nA
■ Operating Voltage Range: VREF to 20V
■ 0°C to 105°C Guaranteed Operation
■ SOT-23-3 Package
■ Upgrade to LMV431, TLV431, SC431L
ANODE
3
3
SPX1432
1
2
1
REF
2
CATHODE
Now Available in Lead Free Packaging
APPLICATIONS
■ Switching Power Supplies
■ Adjustable Supplies
■ Error Amplifiers
■ Single Supply Amplifier
■ Monitors / VCRs / TVs
■ Personal Computers
■ Voltage References
DESCRIPTION
The SPX1432 is a three terminal adjustable shunt voltage regulator that provides a highly accurate 1.24V
bandgap reference with 0.5% accuracy, eliminating the need for trimming in most power supply designs.
Offered in the tiny SOT-23 package, the SPX1432 has an extremely wide operating current range of 60uA
to 100mA, and reference input current of only 100nA (typ). The SPX1432 can regulate outputs from VREF
to 20V, using two external resistors, and is guaranteed over the extended commercial temperature range
of 0°C to 105°C.
The combination of the small size, wide output current capability, flexible voltage range, and stable
performance over the entire extended commercial temperature range, makes the SPX1432 the ideal
candidate a variety of shunt regulator and current source designs in applications such as Portable meters,
Instrumentation, and Industrial Process Control.
FUNCTIONAL DIAGRAM
Cathode (K)
Date: 5/6/04
Reference
(R)
+
-
1.24V
Anode (A)
SPX1432 1.24V Precision Adjustable Shunt Regulator
1
© Copyright 2004 Sipex Corporation
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