TLVH431ACDBVT

Overview

The TLVH431ACDBVT is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 20 V and provides an adjustable output voltage from 1.24 V to 18 V. The device features an initial accuracy of 1% and a maximum temperature coefficient of 161 ppm/°C. It supports a cathode current range from 80 µA to 80 mA and functions reliably across an operating temperature range of -40°C to +125°C. The component is housed in a compact SOT-23-5 surface-mount package.

Feature Summary

• Adjustable output voltage capability spanning 1.24 V to 18 V via external resistor divider
• High precision with guaranteed initial accuracy and low temperature coefficient for stable reference performance
• Wide operating current range supporting both low-power standby and high-current sink applications
• Extended industrial temperature rating ensuring reliability in harsh thermal environments

Applications

• Battery-operated equipment requiring precise voltage monitoring
• Switch-mode power supplies utilizing feedback loop regulation
• Data acquisition systems needing stable reference voltages
• Portable devices where space-saving surface mount packaging is critical

Procurement Notes

Verify the specific suffix 'ACDBVT' against the official Texas Instruments datasheet to confirm the exact accuracy grade, package variant, and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the SOT-23-5 package. Confirm RoHS compliance status and lead-free material declarations prior to procurement integration.

Selection Notes

Select this component when a low-cost, adjustable shunt regulator with 1% initial accuracy is required. It is suitable for designs needing operation up to 20 V input with a wide cathode current range. Consider the SOT-23-5 package constraints and the 161 ppm/°C temperature coefficient for thermal stability requirements in the target application environment.

Part Context

This part belongs to the TLVH431 family of low-voltage adjustable precision shunt regulators. It serves as a cost-effective alternative to traditional Zener diodes, offering superior temperature stability and lower dynamic impedance. The family includes variants with different accuracy grades and automotive qualifications, such as the TLVH431AQ series.

Replacement Considerations

Compatible substitutes include the TLVH431BCDBVT (0.5% accuracy) or TLVH431IDBVT (1.5% accuracy) from Texas Instruments, provided the accuracy tolerance aligns with design requirements. Cross-manufacturer equivalents like the STMicroelectronics TLVH431AIL5T may be considered if pinout and electrical characteristics match.