General Description

The AS431I 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.

Features

• Programmable Precise Output Voltage from

2.5V to 36V

• High Stability Under Capacitive Load

• Low Minimum Cathode Current for Regulation:

10μA (Typ.), 50μA (Max.)

• Low Temperature Deviation: 4.5mV Typical

• Sink Current Capacity from 50μ A to 100mA

• Low Output Noise

• Wide Operating Range: -40℃ to 125℃

Applications

• Charger

• Voltage Adapter

• Switching Power Supply

• Graphic Card

• Precision Voltage Reference