TLVH431NCDBZRR

Overview

The TLVH431NCDBZR is a three-terminal adjustable precision shunt regulator from the Nexperia TLVH431N family, housed in an SOT23 plastic surface-mounted package. It features standard-grade reference voltage tolerance of 1.5%. The output voltage is programmable up to 14 V using two external resistors, with a nominal reference voltage of 1.24 V at 25 °C. The device supports a cathode current range from 0.08 mA to 70 mA and offers low output noise with a typical dynamic impedance of 0.1 Ω.

Feature Summary

• Programmable output voltage capability up to 14 V via external resistor divider
• Standard-grade reference voltage tolerance of 1.5% for reliable regulation
• Low output noise characteristics suitable for sensitive analog circuits
• Active output circuitry providing sharp turn-on behavior

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 TLVH431NCDBZR corresponds to the non-automotive qualified version as indicated in the Rev 3 datasheet dated October 2024. Confirm the pinning configuration matches the normal pinning scheme required by the design, distinct from mirrored variants ending in MQDBZR. Ensure application requirements align with commercial temperature ranges rather than automotive specifications.

Selection Notes

Select this component when a standard 1.5% tolerance is sufficient for the target application. Choose this package for compact surface-mount designs requiring a three-terminal shunt regulator. Consider the 0.08 mA to 70 mA operating current range to ensure compatibility with the load requirements. Verify thermal dissipation limits based on the FR4 PCB mounting conditions specified in the datasheet.

Part Context

This device belongs to the TLVH431N family of adjustable precision shunt regulators manufactured by Nexperia. It serves as a cost-effective alternative to Zener diodes in on-board regulation and adjustable power supply applications. The family includes various grades and pinning configurations to accommodate different design constraints and environmental requirements.

Replacement Considerations

Compatible substitutes within the same family include TLVH431NACDBZR for tighter 1.0% tolerance or TLVH431NMQDBZR for mirrored pinning configurations. Ensure any replacement maintains the SOT23 package outline and electrical characteristics defined in the TLVH431N_FAM datasheet.