TL431ACLPG

Overview

The TL431ACLPG is a three-terminal programmable shunt regulator diode from onsemi, housed in a TO-92 package. It operates as a low temperature coefficient zener reference, programmable from Vref to 36 V using two external resistors. The device supports a cathode current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 Ω. It features a voltage reference tolerance of ±1.0% and an equivalent full-range temperature coefficient of 50 ppm/°C. Operating temperatures range from 0 °C to +70 °C.

Feature Summary

• Programmable output voltage adjustable from Vref to 36 V via external resistors
• Temperature compensated for operation over the full rated operating temperature range
• Low dynamic output impedance ensuring stable regulation performance
• RoHS compliant and lead-free construction

Applications

• Digital voltmeters
• Power supplies
• Op amp circuitry
• Shunt regulators

Procurement Notes

Verify the current availability status of the TL431ACLPG before design finalization, as datasheet revision history indicates this specific part number may be discontinued. Confirm that the standard commercial temperature range (0 °C to +70 °C) meets the environmental requirements of the target application. Ensure the TO-92 through-hole package aligns with the PCB layout specifications.

Selection Notes

Select the TL431ACLPG when a precise, adjustable voltage reference is required within the 0 °C to +70 °C operating range. This component serves as a direct replacement for standard Zener diodes in applications demanding higher accuracy. Consider the ±1.0% initial accuracy and low dynamic impedance for feedback control loops or precision monitoring circuits where stability is critical.

Part Context

The TL431 series represents a family of monolithic IC voltage references designed to replace traditional discrete Zener diodes. Manufactured by onsemi, these devices offer superior thermal stability and lower noise characteristics compared to standard components. The TL431ACLPG specifically belongs to the 'A' series with a 1.0% tolerance, providing a reliable solution for linear integrated circuit applications requiring a stable reference voltage.

Replacement Considerations

Compatible substitutes include the TL431ACLP and TL431CLP from the same manufacturer. Verify pinout compatibility and electrical parameter alignment when transitioning between different tolerance grades or packaging variants within the TL431 family.