ELM0431AxA Adjustable precision shunt regulator

ELM0431AxA series are three-terminal adjustable regulators with guaranteed thermal stability over applicable temperature range. The output voltage may be set to any value between Vref (Typ.2.495V) and 40V with two external resistors. These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications.
ELM0431AxA shunt regulator is available in a SOT-89 package.

Programmable output voltage
Temperature coefficient is 50ppm/°C typical
Temperature compensated for operation over full temperature range
Low output noise voltage
Fast turn on response
Linear regulator
Precision voltage reference
Switch power supplies
Battery operating equipment

Absolute Maximum Ratings

Cathode voltageVka42V
Cathode current range (Continuous)Ik-100 to +150mA
Reference input current rangeIref-0.05 to +10mA
Power dissipationPd500 (*1)
1000 (*2)
Junction temperatureTj150°C
Operationg temperature rangeTopr-40 to +125°C
Storage temperature rangeTstg-65 to +150°C
  • * 1. No mounted, IC alone.
    * 2. When mounted on glass epoxy 2-layers PCB (EIJ/JEDEC standard size: 76.2 mm×114.3 mm×1.6 mm), Cu thickness 35 μm, copper foil area ratio 20% on the front side, back side 100% .

Block diagram