Description
The SC431L is a three terminal adjustable shunt regulator with thermal stability guaranteed over temperature. The output voltage can be adjusted to any value from 1.24V (VREF) to 20V with two external resistors. The SC431L has a typical dynamic output impedance of 0.05Ω. Active output circuitry provides a very sharp turn on characteristic, making the SC431L an excellent replacement for zener diodes.

Features
◆ Low voltage operation (down to 1.24V)
◆ Wide operating current range 100µA to 100mA
◆ Low dynamic output impedance 0.05 Ω typ.
◆ Trimmed bandgap design ± 0.25%
◆ Upgrade for TLV431A
◆ SOT-23-3 and SOT-23-5 packages. Also available in Lead-free package, fully WEEE and RoHS compliant

Applications
◆ Linear Regulators
◆ Adjustable Supplies
◆ Switching Power Supplies
◆ Battery Operated Computers
◆ Instrumentation
◆ Computer Disk Drives