TL431ACDBZR-QR

Overview

The TL431ACDBZR-QR is a programmable shunt voltage reference manufactured by Nexperia. It operates within an output voltage range of 2.4 V to 36 V, set via two external resistors. The device features a reference voltage tolerance of 1.0%, classifying it as A-Grade. It supports a sink current capability from 1 mA to 100 mA and maintains a typical output impedance of 0.2 Ω. Qualified under the AEC-Q101 automotive standard, it ensures reliability for demanding environments.

Feature Summary

• AEC-Q101 qualified for automotive applications
• Programmable output voltage up to 36 V
• Low output noise characteristics

Applications

• Shunt regulator circuits
• Precision constant current sinks
• Isolated feedback loops for Switch Mode Power Supplies (SMPS)

Procurement Notes

Verify component authenticity through authorized Nexperia distributors or official channels. Confirm that the specific suffix -QR aligns with required reel packaging specifications. Ensure compliance with RoHS directives and relevant automotive quality standards before integration into production designs.

Selection Notes

Select this part when a 1.0% reference voltage tolerance is required for precision applications. Consider the AEC-Q101 qualification for automotive projects. Evaluate thermal performance and package constraints against system requirements to ensure optimal operation within specified temperature ranges.

Part Context

This component belongs to the TL431 family of three-terminal shunt regulators. It shares pinning configurations with other variants in the series but differs in accuracy grade and operating temperature specifications. The device serves as a stable reference element in power management and control circuitry.

Replacement Considerations

Compatible substitutes include TL431AQDBZR,215 and TL431AFDT. Verify pin compatibility and electrical parameters before substitution.