TLVH431AILPR

Overview

The TLVH431AILPR is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a cathode voltage range of 1.24 V to 18 V and provides an initial accuracy of ±1%. The device supports a maximum sink current of 70 mA with a minimum operating current of 80 µA. It features a temperature coefficient of 138 ppm/°C and functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in a TO-92-3 through-hole package.

Feature Summary

• Adjustable output voltage capability ranging from 1.24 V to 18 V via external resistor divider
• High precision performance with ±1% initial accuracy specification
• Extended thermal stability suitable for industrial environments up to +125°C

Applications

• Battery-operated equipment requiring low power consumption
• Switch mode power supplies
• Data acquisition systems
• Battery chargers

Procurement Notes

Verify the specific suffix 'A' indicates the ±1% accuracy grade and 'LPR' denotes the TO-92-3 through-hole package configuration. Confirm RoHS compliance status as detailed in official documentation. Check for End-of-Life notifications or Product Change Notices that may affect long-term availability. Ensure the ordering part number matches the required tolerance and package type exactly.

Selection Notes

Select this component when a through-hole solution is required for precision voltage referencing. The ±1% accuracy suits applications demanding tighter tolerances than standard 1.5% variants. The TO-92-3 package facilitates manual assembly or legacy board designs. Consider the 70 mA sink current limit against load requirements. Evaluate the 138 ppm/°C temperature coefficient for thermal drift sensitivity in the target environment.

Part Context

This device belongs to the TLVH431 family of low-voltage adjustable shunt regulators. It serves as a high-precision alternative to standard TL431 devices, optimized for lower voltage operation down to 1.24 V. The family includes various packages and accuracy grades, with the AILPR variant specifically designated for through-hole mounting with 1% tolerance.

Replacement Considerations

Direct substitutes include other TLVH431 variants with matching accuracy and package, such as TLVH431BCLPR (0.5% accuracy) or TLVH431QLPR (1.5% accuracy). Cross-family replacements like TLV431AILPRE3 offer similar functionality but may differ in maximum voltage ratings or package availability.