TL431IDBZR

The TL431IDBZR is a precision voltage reference and adjustable shunt regulator manufactured by Texas Instruments. It is designed for a variety of applications, including power management, voltage regulation, and signal conditioning. Here’s a detailed description of its features and specifications:

Package and Physical Characteristics:

• Package Type: The TL431IDBZR comes in a compact SOT-23 package, which is a surface-mount device (SMD) that allows for easy integration into printed circuit boards (PCBs). The SOT-23 package typically has three pins.
• Dimensions: The SOT-23 package generally measures approximately 2.9 mm x 1.6 mm x 1.0 mm, making it suitable for space-constrained applications.

Electrical Characteristics:

• Reference Voltage: The TL431 provides a precise reference voltage of 2.5 V, which is stable over temperature and time.
• Adjustable Output: The output voltage can be adjusted from 2.5 V to 36 V by using external resistors, allowing for flexibility in various applications.
• Temperature Coefficient: The device features a low temperature coefficient, typically around 50 ppm/°C, ensuring minimal drift in reference voltage with temperature changes.
• Output Current: The TL431 can sink up to 100 mA of output current, making it suitable for driving loads directly or for use in feedback loops.
• Dynamic Output Impedance: The output impedance is low, which helps maintain stability and accuracy in voltage regulation.

Performance Features:

• High Accuracy: The TL431 offers high accuracy with a tolerance of ±1% at 25°C, ensuring reliable performance in precision applications.
• Wide Operating Voltage Range: The device operates over a wide input voltage range, typically from 2.5 V to 36 V, making it versatile for different power supply designs.
• Fast Response Time: The TL431 has a fast response time to changes in load conditions, which is critical for maintaining stable output voltage in dynamic environments.

Applications:

• Power Supply Regulation: Commonly used in switching power supplies and linear regulators to provide stable output voltage.
• Voltage Reference: Acts as a voltage reference in various circuits, including analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
• Feedback Control: Utilized in feedback loops for maintaining voltage levels in various electronic systems.

Additional Features:

• Thermal Protection: The TL431 includes thermal shutdown features to protect against overheating, enhancing reliability in demanding applications.
• Low Power Consumption: The device is designed for low power consumption, making it suitable for battery-operated devices and energy-efficient designs.

Conclusion:

The TL431IDBZR from Texas Instruments is a highly versatile and reliable component that provides precision voltage regulation and reference capabilities. Its compact size, adjustable output, and excellent performance characteristics make it a popular choice in a wide range of electronic applications.