TL431AIDRE4

Overview

The TL431AIDRE4 is an adjustable precision shunt regulator manufactured by Texas Instruments. It functions as a programmable parallel voltage reference with an output voltage range from 2.495 V to 36 V. The device features a typical initial accuracy of ±1% and operates within a temperature range of -40°C to +85°C. Key electrical parameters include a maximum cathode current of 700 µA and a maximum output current of 100 mA. It is housed in an 8-SOIC surface-mount package.

Feature Summary

• Provides precise, adjustable voltage regulation via external resistor networks
• Ensures stable performance across industrial temperature ranges
• Supports high output current capabilities for power management applications

Applications

• Precision voltage references in power supply circuits
• Programmable linear regulators
• Current limiting and on/off control circuits

Procurement Notes

Verify the component authenticity against official Texas Instruments documentation. Confirm that the specific suffix 'E4' aligns with the required RoHS compliance standards and manufacturing site specifications. Ensure the package type matches the design footprint requirements before integration into the final assembly process.

Selection Notes

Select this component when a low-cost, high-accuracy shunt regulator is required for voltage monitoring or feedback loops. The 8-SOIC package offers a balance between thermal performance and board space efficiency. Consider the ±1% tolerance for applications demanding tighter voltage stability compared to standard variants.

Part Context

This part belongs to the widely used TL431 family of adjustable shunt regulators. It serves as a fundamental building block in analog circuit design, offering a reliable alternative to Zener diodes for applications requiring better temperature stability and lower dynamic impedance. The device is integral to isolated power supply designs and battery management systems.

Replacement Considerations

Direct substitutes include the TL431AIDR. Verify pin compatibility and electrical specifications before substitution.