The ZR431N8 is a three-terminal adjustable shunt regulator offering excellent temperature stability and output accuracy. This device is designed to be a cost-effective alternative to Zener diodes in applications requiring a precise voltage reference. Its low dynamic impedance and sharp turn-on characteristics make it suitable for a wide range of analog applications.

Applications

• Precision voltage references
• Linear regulators
• Switching power supplies
• Error amplifiers in power supplies
• Voltage monitoring
• Data acquisition systems

Features

• Adjustable output voltage: Vref to 36V
• Low dynamic output impedance: 0.2Ω (typical)
• Sink current capability: 1mA to 100mA
• Typical temperature drift: 7ppm/°C
• Low output noise
• Off-state current of 100nA (typical)
• Available in a space-saving SOT23 package

Benefits

• Provides a stable and accurate voltage reference for a variety of applications.
• Reduces component count and board space compared to discrete Zener diode solutions.
• Improves system performance with low noise and temperature drift.
• Offers flexibility in voltage selection through its adjustable output voltage feature.
• Simplifies power supply design by serving as a precise error amplifier reference.

Additional Details

The ZR431N8 operates with a wide supply voltage range and is stable with capacitive loads. The reference voltage is internally trimmed to provide high accuracy. It is designed for operation in commercial temperature ranges. The device exhibits excellent stability, making it suitable for use in demanding industrial and consumer applications. The small SOT23 package makes it suitable for high-density board designs.