TL431BIP

Overview

The TL431BIP 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 typical voltage reference tolerance of ±0.4% at 25°C and a typical dynamic output impedance of 0.22 Ω. It supports a wide operating current range of 1.0 mA to 100 mA with an equivalent full-range temperature coefficient of 50 ppm/°C. Designed for the industrial temperature range of -40°C to +85°C, it utilizes a PDIP-8 package.

Feature Summary

• Programmable precision reference utilizing two external resistors
• Temperature compensated operation over the full rated range
• Low dynamic output impedance for stable regulation

Applications

• Digital voltmeters
• Power supplies
• Op amp circuitry

Procurement Notes

Verify the specific suffix 'IP' confirms the PDIP-8 package and the -40°C to +85°C industrial temperature rating. Confirm that the 'B' designation matches the required ±0.4% voltage reference tolerance specification. Ensure the ordering information aligns with the manufacturer's current datasheet revision to avoid obsolete variants.

Selection Notes

Select this component when a precise, adjustable shunt regulator is needed within the industrial temperature range. The PDIP-8 package is suitable for through-hole mounting applications requiring higher power dissipation capabilities compared to smaller surface-mount options. Verify stability requirements against load capacitance curves before implementation.

Part Context

This part belongs to the TL431, A, B series of programmable precision references manufactured by onsemi. These monolithic ICs serve as direct replacements for standard Zener diodes in various analog circuits. The series includes variants with different tolerances and temperature ranges, such as the automotive-grade NCV431A/B.

Replacement Considerations

TL431BID