TL431BILPG

Overview

The TL431BILPG is a three-terminal programmable shunt regulator diode from onsemi. It operates as a low temperature coefficient zener, programmable from Vref to 36 V using two external resistors. The device features a voltage reference tolerance of ±0.4% at 25 °C and a typical dynamic impedance of 0.22 Ω. It supports a sink current range of 1.0 mA to 100 mA with an equivalent full-range temperature coefficient of 50 ppm/°C. Operating within an ambient temperature range of -40 °C to +85 °C, it utilizes a TO-92 (TO-226) package.

Feature Summary

• Programmable output voltage capability up to 36 V via external resistor divider
• High precision voltage reference with ±0.4% initial tolerance at 25 °C
• Low dynamic output impedance for stable regulation performance
• Temperature compensated operation across the full rated industrial temperature range

Applications

• Digital voltmeters
• Power supplies
• Op amp circuitry
• Constant current sources

Procurement Notes

Verify the specific suffix 'LP' corresponds to the TO-92 package configuration required for your design. Confirm that the 'I' designation aligns with the specified -40 °C to +85 °C operating temperature range. Ensure compatibility with lead-free and RoHS compliance requirements before finalizing procurement specifications.

Selection Notes

Select this component when a precise, adjustable shunt reference is needed in through-hole applications. The ±0.4% tolerance suits circuits requiring tighter accuracy than standard Zener diodes. Consider the thermal resistance characteristics of the TO-92 package for power dissipation limits under maximum load conditions.

Part Context

This part belongs to the TL431A/B series of programmable precision references manufactured by onsemi. It serves as a direct replacement for traditional Zener diodes in feedback loops and reference circuits. The family includes variants with different tolerances and temperature ranges, such as the TL431AILPRPG.

Replacement Considerations

LM431BIZX