SPX1432 Datasheet, PDF (1/7 Pages) Sipex Corporation – 1.24V Precision Adjustable Shunt Regulator

®
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: V_REF 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 V_REF
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