TL431CLPRA

Overview

The onsemi TL431CLPRA is a three-terminal programmable shunt regulator diode in the TO-92 (TO-226) package. It operates as a low temperature coefficient Zener, programmable from Vref to 36 V using two external resistors. The device features a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 Ω. It includes an internal 2.5 V reference for stable operation from 5.0 V logic supplies and functions as either a positive or negative voltage reference.

Feature Summary

• Programmable output voltage capability up to 36 V
• Temperature compensated for full rated operating range
• Low dynamic output impedance for precision regulation
• Suitable replacement for standard Zener diodes

Applications

• Digital voltmeters
• Power supply feedback control
• Op amp circuitry references

Procurement Notes

Verify that the specific ordering suffix matches the required tape and reel shipping configuration for the TO-92 package. Confirm compliance with RoHS standards and ensure the component meets the specified 0°C to +70°C operating temperature range for the intended application environment.

Selection Notes

Select this part when a precise, adjustable voltage reference is needed within the commercial temperature range. Ensure the design accommodates the 1.0 mA to 100 mA cathode current limits. Consider stability boundary conditions regarding load capacitance if used in active feedback loops rather than simple reference applications.

Part Context

This component belongs to the TL431 series of programmable precision references manufactured by onsemi. It serves as a versatile monolithic IC voltage reference designed to replace discrete Zener diodes in various analog and power management circuits requiring stable reference voltages.

Replacement Considerations

TL431CLPRAG