TL431BIDM

Overview

The TL431BIDM is a precision programmable shunt voltage regulator manufactured by Microsemi Corporation. It features an initial voltage reference accuracy of 0.4% and operates within an ambient temperature range of -40°C to +85°C. The device provides an adjustable output voltage from 2.5V to 36V using two external resistors. Key electrical characteristics include a sink current capability ranging from 1mA to 100mA, a typical output dynamic impedance of less than 100mΩ for the B-grade device, and a typical equivalent full-range temperature coefficient of 30ppm/°C.

Feature Summary

• Offers high-precision voltage regulation with an initial reference accuracy of 0.4%.
• Provides low output dynamic impedance to ensure improved load regulation performance.
• Features direct pin-to-pin compatibility with industry standard TL431 and TL1431 products.

Applications

• Feedback path control in switching power supplies
• Overvoltage protection (OVP) crowbar circuits
• Reference source for A/D and D/A converters

Procurement Notes

Verify component authenticity through official Microsemi channels or authorized distributors. Confirm that the specific ordering suffix matches the required package type and thermal specifications. Ensure compliance with RoHS requirements if applicable to the target assembly process. Review the production data sheet for any obsolete status warnings before finalizing procurement plans.

Selection Notes

Select this component when precise voltage referencing is required across industrial temperature ranges. The 0.4% tolerance suits applications demanding tight regulation without external trimming. Consider the surface-mount SOIC-8 package for automated assembly processes. Evaluate stability boundary conditions regarding load capacitance to prevent oscillation in the final circuit design.

Part Context

This device belongs to the TL431 series of precision programmable references. It serves as a drop-in replacement for legacy components while offering enhanced accuracy grades. The series supports various packaging options including surface-mount and through-hole configurations to accommodate diverse PCB layout requirements.

Replacement Considerations

TL431 and TL1431 are confirmed direct pin-to-pin replacements.