TLVH431AIDBVTG4

Overview

The TLVH431AIDBVTG4 is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of up 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 temperature coefficient of 138 ppm/°C. It supports a maximum cathode current of 80 mA with a minimum operating current of 80 µA. The component is housed in a SOT-23-3 surface-mount package and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Adjustable precision shunt regulation with wide output voltage range
• High thermal stability over extended industrial temperature ranges
• Low minimum cathode current for efficient power management
• Compact surface-mount packaging for space-constrained designs

Applications

• Battery-powered equipment requiring precise voltage references
• Portable consumer electronics with limited power budgets
• Industrial control systems needing stable shunt regulation
• Adaptive biasing circuits in analog signal processing

Procurement Notes

Verify the specific suffix 'TG4' indicates lead-free RoHS compliance and tape-and-reel packaging configuration. Confirm the 'A' grade designation matches the required 1% initial accuracy specification for your application. Ensure the SOT-23-3 footprint aligns with your PCB layout constraints. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when high precision is required alongside low minimum operating current to extend battery life. The 1% accuracy and 138 ppm/°C temperature coefficient make it suitable for applications demanding stable reference voltages under varying thermal conditions. Consider the 80 mA sink capability for driving indicator loads or feedback networks directly.

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 accuracy and lower dynamic impedance. The family includes variants with different accuracies and packages, providing flexibility for various power management and reference applications.

Replacement Considerations

Check for direct equivalents such as TLVH431AIDBZTG4 if SOT-23-3 packaging is acceptable. Verify functional compatibility with TLV431 series parts, noting differences in maximum voltage and current ratings. Ensure any substitute maintains the same temperature coefficient and accuracy grade.