TL431BMFDTVL

Overview

The Nexperia TL431BMFDTVL is a three-terminal shunt regulator from the TL431 family, housed in an SOT-23 surface-mount package. It provides a programmable output voltage ranging from Vref (2.495 V) to 36 V, set by two external resistors. The device features a B-grade reference voltage tolerance of 0.5%, ensuring high precision. It operates within an ambient temperature range of -40 °C to 125 °C and supports a sink current capability between 1 mA and 100 mA. Key electrical parameters include a typical output impedance of 0.2 Ω and low output noise characteristics.

Feature Summary

• Programmable output voltage adjustable up to 36 V via external resistors
• B-grade initial accuracy with 0.5% reference voltage tolerance
• Wide operating temperature range spanning -40 °C to 125 °C
• Low output noise and typical output impedance of 0.2 Ω

Applications

• Shunt regulator circuits
• Precision current limiter designs
• Precision constant current sink applications
• Isolated feedback loops for Switch Mode Power Supplies (SMPS)

Procurement Notes

Verify the specific suffix 'VL' against official Nexperia documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure compatibility with AEC-Q100 qualification requirements if automotive standards are necessary. Cross-reference the part number with authorized distributors to confirm availability status and lead times prior to ordering.

Selection Notes

Select this component when precise voltage referencing is required in space-constrained designs utilizing SOT-23 packages. The 0.5% tolerance suits applications demanding higher accuracy than standard grades. Consider the wide temperature range for industrial environments. Verify that the 100 mA sink current meets load requirements and that the mirrored pinning configuration aligns with PCB layout constraints.

Part Context

This device belongs to the TL431 series of three-terminal shunt regulators manufactured by Nexperia USA Inc. The series is widely utilized for providing stable reference voltages in power management and control circuits. The BMFDT variant specifically denotes the B-grade accuracy level and the mirrored pinning configuration within the SOT-23 form factor, distinguishing it from standard or A-grade alternatives.

Replacement Considerations

Compatible substitutes include TL431AMFDT (A-grade, 1% tolerance) and TL431BFDT (B-grade, normal pinning). For automotive applications, consider TL431BIDBZR or TL431QDBZR variants which share similar electrical characteristics but differ in temperature range or pinning configuration.