TL431AQPKG3

Overview

The TL431AQPKG3 is an adjustable precision shunt regulator manufactured by Texas Instruments, housed in a SOT-89-3 surface-mount package. It provides a reference voltage range from 2.495 V to 36 V with an initial accuracy of ±1%. The device supports a maximum cathode current of 700 µA and delivers up to 100 mA output current. It operates within a temperature range of -40°C to 125°C and meets RoHS3 standards.

Feature Summary

• Provides high-precision adjustable voltage referencing with ±1% initial accuracy
• Capable of sinking significant load currents for effective regulation
• Designed for robust operation across extended industrial temperature ranges

Applications

• Precision power supply regulation circuits
• Portable equipment voltage monitoring
• Process control system references

Procurement Notes

Verify component authenticity through authorized channels due to the prevalence of counterfeits. Confirm the specific Q-package suffix matches design requirements. Check for recent End-of-Life notices or Product Change Notifications that may affect long-term availability. Ensure proper handling procedures are followed during assembly.

Selection Notes

Select this component when precise voltage referencing is required in space-constrained designs. The SOT-89-3 package offers a compact footprint suitable for dense PCB layouts. Consider the ±1% tolerance for applications demanding tight voltage stability without external trimming.

Part Context

This part belongs to the TL431 family of programmable shunt regulators. It serves as a versatile alternative to Zener diodes, offering superior performance in terms of accuracy and temperature stability. The device is widely used in switching power supplies and linear regulators.

Replacement Considerations

TL431AQPK