TLVH431NIDBZRVL

Overview

The TLVH431NIDBZR is a three-terminal adjustable precision shunt regulator from the Nexperia TLVH431N family, housed in an SOT23 plastic surface-mounted package. It operates within an ambient temperature range of -40 °C to +85 °C and features an A-Grade reference voltage tolerance of 1.0%. The device allows output voltage programming between approximately 1.24 V and 14 V using two external resistors. Key electrical parameters include a cathode current capability ranging from 0.08 mA to 70 mA, a typical dynamic cathode-anode impedance of 0.1 Ω, and a maximum cathode-anode voltage of 14 V.

Feature Summary

• Programmable output voltage up to 14 V via external resistors
• A-Grade reference voltage tolerance of 1.0%
• Low output noise with typical dynamic impedance of 0.1 Ω
• Sink current capability from 0.08 mA to 70 mA

Applications

• Shunt regulator
• Precision current limiter
• Precision constant current sink
• Isolated feedback loop for Switch Mode Power Supply (SMPS)

Procurement Notes

Verify that the specific part number TLVH431NIDBZR corresponds to the non-automotive qualified version as indicated by the datasheet revision history. Confirm the SOT23 package pinning configuration matches the design requirements, noting that mirrored pinning variants exist within the family. Ensure application circuits are stable over the anticipated operating current and temperature ranges before finalizing procurement.

Selection Notes

Select this component when an adjustable precision shunt regulator is required for commercial applications operating between -40 °C and +85 °C. The A-Grade variant offers tighter reference voltage tolerance compared to standard grades. Consider the low dynamic impedance and sharp turn-on characteristics for applications replacing Zener diodes. Verify thermal dissipation limits based on the specific PCB mounting conditions and copper area available.

Part Context

This device belongs to the TLVH431N family of adjustable precision shunt regulators manufactured by Nexperia. The family includes various grades and pinning configurations within the SOT23 package. Unlike automotive-qualified counterparts, this specific series is designated for general commercial use. The functional architecture remains consistent across the family, differing primarily in temperature ranges, tolerance specifications, and pinout orientations.

Replacement Considerations

Direct replacements within the same family include TLVH431NAIDBZR (mirrored pinning) or TLVH431NCDBZR (standard grade). When substituting, verify pin compatibility, especially regarding normal versus mirrored pinning configurations. Ensure the replacement meets the required temperature range and voltage tolerance specifications for the target application.