The AS2431 is a three-terminal adjustable shunt regulator providing a highly accurate bandgap reference. The adjustable shunt regulator is ideal for a wide variety of linear applications that can be implemented using external components to obtain adjustable currents and voltages. In the standard shunt configuration, the combination of low temperature coefficient (TC), sharp turn-on characteristics, low output impedance and programmable output voltage make this precision reference an excellent error amplifier.
The AS2431 provides a three‑terminal adjustable shunt regulator with a trimmed bandgap reference, suitable for low‑voltage, low‑current linear applications. It features an internal amplifier capable of 100 mA and offers multiple temperature ranges.
The datasheet includes pin configurations for several package styles (TO‑92, SOIC‑8, SOT‑89, SOT‑23), absolute maximum ratings, recommended operating conditions, and typical performance curves such as voltage vs. temperature and dynamic output impedance.
| Temperature coefficient | 15 ppm/°C |
|---|---|
| Cathode‑Anode reverse breakdown voltage | 18 V |
| Storage temperature range | -65 °C to 150 °C |
The temperature coefficient is 15 ppm per degree Celsius.
The device can tolerate up to 18 V reverse breakdown between cathode and anode.