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. The AS2431 is a direct replacement for the AS431 in low voltage, low current applications.
The AS2431 provides a three‑terminal adjustable shunt regulator with a trimmed bandgap reference, offering temperature‑compensated output (15 ppm/°C) and low output impedance. It is suitable for linear applications requiring precise reference voltages and low noise.
The device is offered in multiple packages (TO‑92, SOIC‑8, SOT‑89, SOT‑23) and supports a wide temperature range from –55 °C to +125 °C. Absolute maximum ratings include 18 V reverse breakdown and 1 A forward current, while typical performance curves show low output noise and stable voltage regulation across temperature and load conditions.
| Reverse Breakdown Voltage (Cathode‑Anode) | 18 V |
|---|---|
| Continuous Power Dissipation (TO‑92) | 775 mW |
| Operating Temperature Range | -55 °C to +125 °C |
The maximum reverse breakdown voltage is 18 V.
It can operate from –55 °C up to +125 °C.
Typical continuous power dissipation is 775 mW at 25 °C.