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The AS431H is a three-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features sharp turn-on characteristics, low temperature coefficient and low output impedance, which make it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators.
The output voltage of AS431H can be set to any value between VREF (2.495V) and the corresponding maximum cathode voltage (36V).
The AS431H precision reference is offered in two voltage tolerance: 0.5% and 1.0%.
This IC is available in 2 packages: TO92 (Ammo Packing) and SOT23.
Switching Power Supply
Precision Voltage Reference
Programmable Precise Output Voltage from 2.495V to 36V
High Stability under Capacitive Load
Low Temperature Deviation: 5mV Typical
Low Equivalent Full-range Temperature Coefficient with 20PPM/°C Typical