TLVH431NMQDBZR-QR

Overview

The TLVH431NMQDBZR-QR is a three-terminal adjustable precision shunt regulator from the Nexperia TLVH431N-Q family, designed for automotive applications. It operates within an ambient temperature range of -40 °C to +125 °C and features A-grade reference voltage tolerance of 1%. The device utilizes mirrored pinning in a SOT23 package. Key electrical parameters include a cathode-anode voltage rating up to 14 V, a sink current capability ranging from 0.08 mA to 70 mA, and a typical output impedance of 0.1 Ω.

Feature Summary

• Qualified according to AEC-Q100 Grade 1 standards for automotive use
• Mirrored pin configuration specific to the MQDBZR suffix
• Low output noise with high thermal stability across extended temperature ranges

Applications

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

Procurement Notes

Verify that the ordering suffix matches the required pin configuration, as the 'MQ' designation indicates mirrored pinning distinct from standard variants. Confirm the specific grade suffix aligns with the necessary reference voltage tolerance for the design. Ensure compliance with AEC-Q100 requirements if deploying in automotive environments. Cross-reference the full part number against official Nexperia documentation to validate production status and availability.

Selection Notes

Select this component when a mirrored pinout is required for PCB layout optimization or compatibility with existing footprints. The A-grade tolerance ensures tighter accuracy compared to standard grades. Verify that the application's maximum cathode current remains within the 70 mA limit and that the operating temperature falls within the specified -40 °C to +125 °C range for reliable performance.

Part Context

This device belongs to the TLVH431N-Q family of low-voltage adjustable precision shunt regulators. It serves as a robust alternative to Zener diodes in on-board regulation and switching power supply designs. The family includes various temperature grades and tolerance options, all housed in the compact SOT23 surface-mounted package suitable for space-constrained automotive electronics.

Replacement Considerations

Standard TLVH431NQDBZR-Q can be used if mirrored pinning is not required. For identical pinout but different tolerance, consider TLVH431NAQDBZR-Q. Other family members like TLVH431NIDBZR-Q offer different temperature ranges but require pin verification.