TL431BCDG

Overview

The onsemi TL431BCDG is an adjustable shunt voltage reference IC designed for surface-mount applications. It operates within a reference voltage range of 2.49V to 36V and delivers a maximum output current of 100mA. The device features an initial accuracy of ±0.4% and maintains a temperature coefficient of 50 ppm/°C. It supports a maximum input voltage of 37V and functions reliably across an operating temperature range from 0°C to +70°C. Packaged in an 8-pin SOIC format with dimensions of 5mm x 4mm x 1.5mm, it offers line regulation of 53mV and load regulation of 25mV.

Feature Summary

• Provides precise adjustable voltage referencing with high initial accuracy
• Operates as a shunt regulator topology for stable circuit control
• Supports wide input voltage ranges up to 37V for flexible integration

Applications

• Precision power supply regulation circuits
• Voltage monitoring and threshold detection systems
• Battery-operated equipment requiring stable reference voltages

Procurement Notes

Verify the specific suffix 'DG' against official onsemi documentation to confirm package type and tape/reel specifications. Ensure the selected variant meets the required thermal and electrical standards for your target application environment. Cross-reference datasheet parameters such as accuracy grades and operating temperatures before finalizing procurement decisions.

Selection Notes

Select this component when high precision is required over standard tolerance options. The ±0.4% accuracy makes it suitable for sensitive analog circuits. Consider the 8-pin SOIC package for PCB space constraints. Evaluate thermal management needs given the 70°C maximum operating temperature limit for industrial or commercial environments.

Part Context

This part belongs to the TL431 series, a widely recognized family of programmable shunt regulators. The TL431BCDG variant specifically denotes the higher precision grade compared to standard versions. It serves as a critical reference element in feedback loops for switching regulators and linear power supplies, ensuring consistent output stability under varying load conditions.

Replacement Considerations

Compatible substitutes include the TL431ACDR2G for lower precision requirements or the TL431IDR2G for improved temperature performance. Verify pinout compatibility and package dimensions before substitution. Ensure replacement parts meet the same automotive or industrial qualification standards if applicable.