Manufacturer BCDSEMI
Part Number AS431BNTR-E1
Cathode Voltage 40V
Cathode Current Range (Continuous) -100 ~ 150mA
Reference Input Current Range 10mA
Junction Temperature 160°C
Storage Temperature Range -65 ~ 150°C
ESD (Human Body Model) 4000V


General Description

The AS431 series ICs are three-terminal adjustable shunt regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger and other adjustable regulators. The output voltage of these ICs can be set to any value between VREF (2.5V) and the maximum cathode volt- age (36V).

The AS431 precision reference is offered in two bandgap tolerance: 0.4% and 0.8%.

These ICs are available in 4 Packages: TO-92, SOT-23-3, SOT-23-5 and SOT-89 .


  • Programmable Precise Output Voltage from 2.5V to 36V
  • Very Accurate Reference Voltage: 0.15% Typical
  • High Stability under Capacitive Load
  • Low Temperature Deviation: 4.5mV Typical
  • Low Equivalent Full-range Temperature Coefficient with 20PPM/oC Typical
  • Low Dynamic Output Resistance: 0.15Ω Typical
  • Sink Current Capacity from 1mA to 100 mA
  • Low Output Noise
  • Wide Operating Range of -40 to 125oC


  • Charger
  • Voltage Adapter
  • Switching Power Supply
  • Graphic Card
  • Precision Voltage Reference

Other Parts