LM431BIM3

Voltage Reference Overview

The LM431BIM3 is an adjustable precision Zener shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 2.495 V to 37 V and features an initial accuracy of 1%. The device has a maximum shunt current of 100 mA and a temperature coefficient of 97 ppm/°C. It supports input voltages up to 37 V and functions between -40°C and +85°C. Packaged in a SOT-23-3 surface-mount format, it serves as a high-performance reference solution for power management applications.

Voltage Reference Feature Summary

• Provides adjustable precision voltage regulation via a three-terminal shunt architecture
• Delivers stable reference output with low temperature drift characteristics
• Supports wide operating input voltage ranges for flexible circuit integration

Voltage Reference Applications

• Precision voltage references in analog signal processing circuits
• Programmable linear regulators requiring stable reference nodes
• Battery-powered equipment needing accurate voltage monitoring

Voltage Reference Procurement Notes

Verify the specific suffix and package variant against the official Texas Instruments datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status and manufacturing origin details directly from authorized distributors or the manufacturer's official documentation before finalizing procurement decisions.

Voltage Reference Selection Notes

Select this component when a low-cost, adjustable shunt regulator with 1% initial accuracy is required. Ensure the application voltage does not exceed the 37 V maximum rating. Consider the SOT-23-3 package constraints for thermal management and PCB layout space availability during the design phase.

Voltage Reference Part Context

This part belongs to the LM431 family of adjustable precision Zener shunt regulators. It is functionally compatible with industry-standard TL431 devices but offers specific performance metrics defined by Texas Instruments. The 'B' grade indicates the 1% accuracy tier within the product line.

Voltage Reference Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.