TLVH431AQLP

Overview

The TLVH431AQLP 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, delivering 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 TO-92-3 through-hole package and is rated for an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Provides stable reference voltage with high initial accuracy across the full operating temperature range
• Capable of sinking significant current for effective regulation in power supply circuits
• Designed for low-voltage applications with wide input voltage tolerance

Applications

• Battery-operated equipment requiring precise voltage monitoring
• Switch-mode power supplies utilizing shunt regulation
• Data acquisition systems needing stable reference potentials

Procurement Notes

Verify the specific suffix 'LP' against official Texas Instruments documentation to confirm package type and availability status. Check for recent Product Change Notifications or End-of-Life notices regarding this specific marking code. Ensure compatibility with existing PCB footprints for the TO-92-3 configuration before procurement.

Selection Notes

Select this component when a through-hole adjustable shunt regulator is required for space-constrained or legacy board designs. The 1% accuracy suits general-purpose precision applications. Consider thermal management requirements given the 80 mA sink capability and TO-92-3 package constraints in enclosed environments.

Part Context

This part belongs to the TLVH431 family of low-voltage adjustable shunt regulators. It shares functional similarities with other variants in the series but differs in package style and specific accuracy grades. The family is designed to replace older discrete reference solutions in compact power management designs.

Replacement Considerations

Consult official substitution guides for equivalent packages. Verify pinout compatibility if replacing with SOT-23 variants. Confirm that temperature coefficients and current limits meet system requirements for direct replacement.