TLVH431ACDBZR

Overview

The TLVH431ACDBZR 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 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 functions across an extended temperature range from -40°C to +125°C and is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Adjustable output voltage capability spanning from 1.24 V up to 18 V for flexible circuit design
• High precision performance characterized by 1% initial accuracy and stable thermal behavior
• Extended operational reliability maintained across a wide industrial temperature range of -40°C to +125°C

Applications

• Portable battery-powered equipment requiring precise voltage regulation
• Power supply circuits utilizing programmable output references
• General-purpose analog signal conditioning and reference applications

Procurement Notes

Verify the specific suffix 'A' corresponds to the required 1% accuracy grade and standard commercial/industrial temperature rating during procurement. Confirm the 'DBZR' suffix indicates the SOT-23-3 package and reel packaging format. Ensure compatibility with system voltage limits not exceeding 20 V. Cross-reference datasheet revisions to confirm pinout consistency if replacing legacy components.

Selection Notes

Select this component when a low-cost, high-precision shunt regulator is needed for low-voltage applications. It serves as a direct replacement for standard TL431 devices where lower operating voltage and improved accuracy are required. Consider the SOT-23-3 footprint for space-constrained designs. Evaluate the 80 mA current drive capability against load requirements to ensure adequate headroom for regulation stability.

Part Context

This part belongs to the TLVH431 family of low-voltage adjustable precision shunt regulators. It shares functional similarities with the TLV431 series but offers enhanced performance characteristics including higher accuracy and wider temperature operation. The device integrates a bandgap reference and error amplifier into a single monolithic IC, providing a cost-effective solution for voltage referencing in modern power management systems.

Replacement Considerations

TLV431ACDBZR: Compatible alternative with similar functionality but limited to a 7 V maximum input voltage. TLVH431BCDBZR: Offers higher 0.5% accuracy but requires verification of specific application tolerance requirements.