TL431AIDBVR

Overview

The TL431AIDBVR is a programmable shunt voltage reference manufactured by Texas Instruments. It operates within an input voltage range of 2.5 V to 36 V and provides an adjustable output voltage across the same span. The device features an initial accuracy of ±1% and a maximum temperature coefficient of 92 ppm/°C. It supports a maximum cathode current of 100 mA and functions reliably between -40°C and +125°C. Packaged in a five-pin SOT-23 surface-mount case, it serves as a precision reference for power management applications.

Feature Summary

• Provides precise programmable shunt regulation with high accuracy
• Operates over a wide input voltage range up to 36 V
• Maintains stability across extended industrial temperature ranges

Applications

• Precision voltage references in power supply circuits
• Adjustable output regulators for DC-DC converters
• Voltage monitoring and threshold detection systems

Procurement Notes

Verify the specific suffix 'DBVR' confirms the SOT-23-5 package and tape-and-reel delivery format. Ensure the 'A' grade designation matches the required ±1% initial accuracy specification. Confirm the component meets RoHS compliance standards if applicable to your manufacturing process. Cross-reference the datasheet revision to ensure pinout compatibility with existing PCB layouts.

Selection Notes

Select this component when a low-cost, high-accuracy shunt regulator is required for space-constrained designs. The SOT-23-5 package offers a compact footprint suitable for dense surface-mount assemblies. Consider the 100 mA cathode current limit for load requirements. The wide operating temperature range makes it suitable for industrial environments where thermal stability is critical for reference performance.

Part Context

This part belongs to the TL431 family of programmable shunt voltage references from Texas Instruments. It is widely used as a replacement for Zener diodes in linear and switching power supplies. The device integrates a bandgap reference and error amplifier to provide stable regulation. It is commonly found in consumer electronics, automotive systems, and industrial control equipment requiring precise voltage control.

Replacement Considerations

Compatible substitutes include the TL431ACDBVR and TL431AIQDBVR. Verify that alternative parts match the SOT-23-5 package dimensions and electrical characteristics. Ensure the replacement maintains the same pin configuration and thermal performance specifications.