| Description & Applications | FEATURES • 2.5V Low-Voltage Adjustable Precision Shunt Regulator • Internal amplifier with 70 mA capability • Programmable output voltage to 29V • 0.25Ωtypical output impedance • Pin to pin compatible with TL431, LM431 , SC431 & AS431 • Trimmed band-gap design 0.5%, 1.0% and 2% with three package options • Low cost solution APPLICATIONS • Linear regulator controller • Precision voltage reference • Switching power supplies • Battery operating equipment • Instrumentation • PCs, Computer disk drives |