The AZ431LBRTR is a low-voltage adjustable precision shunt regulator manufactured by BCD Semiconductor Manufacturing Limited. It's designed to serve as a programmable voltage reference and is commonly used in various electronic circuits requiring stable and accurate voltage regulation. The device offers a precise and adjustable voltage reference, making it suitable for a wide range of applications.

Applications

• Switching power supplies
• Linear regulators
• Voltage monitoring circuits
• Error amplifiers
• Battery chargers
• Instrumentation and measurement equipment

Features

• Adjustable Output Voltage: The output voltage can be programmed to any value between Vref (1.24V) and 18V using external resistors.
• Low Dynamic Output Impedance: Ensures stable operation and accurate voltage regulation.
• Low Reference Input Current: Minimizes loading on the voltage divider network.
• Sink Current Capability: Can sink current from 100μA to 30mA.
• Low Temperature Coefficient: Provides stable operation over a wide temperature range.
• Available in SOT-23 package

Benefits

• Precise Voltage Regulation: Offers accurate and stable voltage regulation.
• Flexible Output Voltage: The programmable output voltage allows for customization.
• Reliable Performance: Ensures stable operation due to low dynamic output impedance and temperature coefficient.
• Simplified Design: Requires minimal external components.
• Compact Size: The SOT-23 package allows for high-density board designs.

Additional Details

The AZ431LBRTR is designed for surface mount applications using the SOT-23 package. The lower reference voltage (1.24V) compared to the standard AZ431 series (2.5V) makes it suitable for lower voltage applications. The device operates by comparing the voltage at its reference input to an internal reference voltage, adjusting its output to maintain the desired voltage level. The use of external resistors allows precise setting of the output voltage. The 'TR' suffix typically denotes tape and reel packaging for automated assembly. It's often found in portable devices and applications where space is a constraint.