TLVH431BQPKG3

Overview

The TLVH431BQPKG3 is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 1.24 V to 18 V and features an initial accuracy tolerance of ±0.5%. The device supports a maximum cathode current of 100 µA and provides a typical output impedance of 0.2 Ω. It functions across a temperature range of -40°C to 125°C and utilizes a SOT-89-3 surface-mount package.

Feature Summary

• Provides precise voltage regulation with high initial accuracy for stable reference applications
• Operates effectively in low-voltage environments with a wide adjustment range
• Features low output noise and defined turn-on characteristics for reliable switching performance

Applications

• Board-level voltage regulation circuits
• Adjustable power supply designs
• Switching power converter feedback loops

Procurement Notes

Verify the specific suffix QPKG3 against official datasheets to confirm package type and quality grade. Ensure compatibility with existing PCB footprints for the SOT-89-3 configuration. Cross-reference thermal requirements with system operating conditions to maintain reliability within the specified temperature range.

Selection Notes

Select this component when low-voltage operation up to 18 V is required alongside tight initial accuracy specifications. Consider the SOT-89-3 package constraints for space-limited designs. Evaluate the 100 µA cathode current limit against circuit load requirements to ensure proper regulation stability during operation.

Part Context

This part belongs to the TLVH431 family of low-voltage adjustable precision shunt regulators from Texas Instruments. It serves as a specialized alternative to standard Zener diodes, offering superior performance in terms of accuracy and temperature stability for modern compact electronic systems requiring precise voltage references.

Replacement Considerations

Check for direct equivalents such as the TLVH431BQPK or other B-grade variants within the same series. Verify pinout compatibility and electrical parameter alignment before substitution.