TLVH431NACDBZRVL

Overview

The TLVH431NACDBZRVL is a three-terminal adjustable precision shunt regulator from the Nexperia TLVH431N family, housed in an SOT23 surface-mounted package. It features A-Grade reference voltage tolerance of 1.0%, with a typical Vref of 1240 mV and a range of 1228 mV to 1252 mV at 25 °C. The output voltage is programmable between approximately 1.24 V and 14 V using two external resistors. Operating conditions support a cathode current range of 0.08 mA to 70 mA and a cathode-anode voltage up to 14 V. The device exhibits low output noise and a typical dynamic impedance of 0.1 Ω.

Feature Summary

• Programmable output voltage capability up to 14 V via external resistor network
• A-Grade reference voltage tolerance ensuring high precision regulation
• Low output noise characteristics for stable performance
• Sharp turn-on active output circuitry replacing Zener diodes

Applications

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

Procurement Notes

Verify that the specific suffix 'VL' aligns with the standard ordering information provided in the datasheet, which lists 'TLVH431NACDBZR'. Confirm whether additional suffixes indicate specific tape-and-reel packaging variations or manufacturing site codes not explicitly detailed in the primary product overview table. Ensure compatibility with standard SOT23 footprints during procurement validation.

Selection Notes

Select this component when precise voltage referencing within the 1.24 V to 14 V range is required. The A-Grade 1.0% tolerance makes it suitable for applications demanding tighter accuracy than the standard 1.5% grade. Consider the SOT23 package size for space-constrained PCB layouts and verify thermal dissipation requirements against the specified junction-to-ambient resistance values for the target operating environment.

Part Context

This part belongs to the TLVH431N family of low-voltage adjustable precision shunt regulators. The family includes variants with different temperature ranges and pinning configurations, such as normal and mirrored pinning options. The 'NA' designation indicates the A-Grade tolerance level, while 'CDBZR' specifies the commercial temperature range and SOT23 package type. This family serves as a direct replacement for traditional Zener diodes in many regulation applications.

Replacement Considerations

Direct substitutes within the same family include TLVH431NCDBZR for standard grade applications or TLVH431NAMQDBZR if mirrored pinning is required. Ensure that any replacement maintains the necessary A-Grade tolerance specifications and operates within the defined cathode current limits of 0.08 mA to 70 mA for equivalent performance.

FAQ

What is the reference voltage tolerance for the TLVH431NACDBZR?

The TLVH431NACDBZR is an A-Grade device with a reference voltage tolerance of 1.0%.

How is the output voltage adjusted in this shunt regulator?

The output voltage is set by two external resistors connected to the reference pin, allowing adjustment between Vref (approx. 1.24 V) and 14 V.

Does this device have mirrored pinning?

No, the TLVH431NACDBZR uses normal pinning configuration. Mirrored pinning is available in devices ending with MQDBZR.