The AZ431BZ-BTRG1 is a precision adjustable shunt regulator produced by BCD Semiconductor Manufacturing Limited. It is designed to provide a stable and adjustable voltage reference, commonly used in various electronic circuits for regulation and control purposes. This device allows for flexibility in circuit design due to its adjustable output voltage feature.

Applications

• Power Supplies: Used in linear and switching power supplies to regulate the output voltage.
• Voltage Monitoring: Employed in voltage monitoring circuits for over-voltage and under-voltage detection.
• Error Amplifiers: Utilized as an error amplifier in feedback control systems.
• Adjustable Current Sources: Can be configured as an adjustable current source.
• Battery Chargers: Used to regulate the charging voltage in battery charger circuits.

Features

• Programmable Output Voltage: The output voltage can be adjusted to any value between Vref (typically 2.5V) and the maximum operating voltage (usually 36V) using two external resistors.
• Low Dynamic Output Impedance: Ensures stable operation over a wide range of load conditions.
• Sink Current Capability: Capable of sinking current from 1mA to typically 100mA.
• Precision Reference Voltage: Offers a precise reference voltage for accurate regulation.
• Low Temperature Coefficient: Provides stable performance over a wide temperature range.
• Wide Operating Temperature Range: Operates reliably in a wide range of temperatures.

Benefits

• Precise Voltage Regulation: Ensures accurate and stable output voltage.
• Flexibility: Adjustable output voltage allows for use in various applications.
• Stable Operation: Low dynamic output impedance ensures stable operation under varying load conditions.
• Cost-Effective Solution: Offers a cost-effective solution for precision voltage regulation.
• Versatile Application: Suitable for a wide range of applications due to its adjustable voltage and stable performance.

Additional Details

The AZ431BZ-BTRG1 works by comparing a fraction of the output voltage to an internal reference voltage. The output transistor then adjusts its conduction to maintain the desired output voltage. The output voltage can be set using external resistors according to the formula: Vout = Vref * (1 + R1/R2), where Vref is the reference voltage (typically 2.5V), and R1 and R2 are the external resistors.

This device is commonly available in various package types, such as TO-92, SOT-23, and SOIC. Detailed electrical characteristics, thermal performance, and application recommendations are usually found in the device's datasheet.