The AZ431BN-A is a three-terminal adjustable shunt regulator offering excellent temperature stability and sharp turn-on characteristics. This device operates as a low-temperature-coefficient voltage reference combined with a high-gain operational amplifier. It is designed for use in a wide range of applications requiring a stable and adjustable voltage reference.

Applications:

• Power Supplies: Used in linear power supplies and switching-mode power supplies as a voltage reference.
• Voltage Monitoring: Employed in over-voltage and under-voltage protection circuits.
• Instrumentation: Incorporated in precision measurement and control circuits.
• Battery Chargers: Provides stable voltage regulation in battery charging circuits.
• Linear Regulators: Used as a reference voltage for linear regulators.

Features:

• Adjustable Output Voltage: Output voltage can be set to any value between Vref (2.5V) and 36V with two external resistors.
• Low Temperature Coefficient: Ensures stable operation over a wide temperature range.
• Sharp Turn-On Characteristics: Provides a well-defined and stable output voltage.
• Low Dynamic Output Impedance: Offers stable operation with varying load conditions.
• Sink Current Capability: Typically capable of sinking current from 1mA to 100mA.

Benefits:

• Stable Voltage Reference: Provides a highly stable voltage reference, crucial for accurate and reliable circuit operation.
• Flexibility: Adjustable output voltage allows for use in a wide variety of applications.
• Cost-Effective: Offers a low-cost solution for voltage regulation and monitoring.
• Reliable Performance: Designed for stable performance in diverse operating conditions.
• Simplified Design: Requires minimal external components for operation, simplifying circuit design and reducing board space.

Additional Details:

The AZ431BN-A typically has a reference voltage of 2.5V. The operating temperature ranges depend on the specific grade. It is commonly available in through-hole (TO-92) and surface-mount (SOT-23, SOT-89) packages. The device's low output noise and excellent stability make it suitable for sensitive analog applications. Be aware that this part is listed as END-OF-LIFE, so consider availability before designing it into new applications.