TL431ACLPRPG

Overview

The onsemi TL431ACLPRPG is a three-terminal programmable shunt regulator diode in the TL431A series. It operates with a cathode current range of 1.0 mA to 100 mA and features a reference input voltage tolerance of ±1.0%. The device provides a typical dynamic impedance of 0.22 Ω and an equivalent full-range temperature coefficient of 50 ppm/°C. It functions as a low temperature coefficient zener, programmable from Vref to 36 V using two external resistors. The component utilizes a TO-92 (TO-226) package with bent leads.

Feature Summary

• Programmable output voltage capability up to 36 V
• Temperature compensated for operation over the full rated operating temperature range
• Low output noise voltage characteristics
• Pb-Free, Halogen Free/BFR Free, and RoHS Compliant

Applications

• Digital voltmeters
• Power supplies
• Op amp circuitry
• Feedback control for driving optocouplers

Procurement Notes

Verify the specific suffix 'LP' corresponds to the TO-92 bent lead package configuration required for your design. Confirm that the TL431A series tolerance meets your circuit requirements, as other series offer different accuracy levels. Ensure the operating ambient temperature range aligns with the specified limits for this variant. Check for any recent product change notices regarding manufacturing sites or materials.

Selection Notes

Select this component when a stable, adjustable voltage reference is needed within a shunt regulator topology. The TO-92 package is suitable for through-hole mounting applications where space allows. Consider the 1.0% initial accuracy if tighter tolerances are not critical. Evaluate stability boundary conditions carefully when adding load capacitance to prevent oscillation in feedback loops.

Part Context

This device belongs to the TL431 family of programmable precision references manufactured by onsemi. The family includes variants with different temperature ranges and accuracies, such as the TL431B and NCV431 series. The TL431A series specifically offers a standard industrial temperature range and moderate accuracy, serving as a versatile replacement for traditional Zener diodes in various analog and power management circuits.

Replacement Considerations

LM431BIZX