LM431AIM/NOPB

Voltage Reference Overview

The LM431AIM/NOPB is a precision adjustable shunt voltage reference manufactured by Texas Instruments. It operates within an input voltage range of up to 37 V and provides an adjustable output voltage spanning from 2.495 V to 37 V. The device features an initial accuracy tolerance of ±2.2% and supports a maximum cathode current of 100 mA. It is housed in an 8-pin SOIC package and is designed for industrial applications with a specified operating temperature range from -40 °C to +85 °C.

Voltage Reference Feature Summary

• Provides precise voltage regulation through an adjustable shunt topology
• Delivers high initial accuracy for stable reference performance
• Supports wide input voltage ranges for flexible circuit integration

Voltage Reference Applications

• Precision power supply regulation circuits
• Battery management system monitoring
• Industrial process control instrumentation

Voltage Reference Procurement Notes

Verify the specific suffix designation against official Texas Instruments documentation to confirm package type and accuracy grade. Ensure that the procurement channel sources genuine components with valid traceability records. Cross-reference the part number with the latest datasheet revisions to confirm compatibility with intended thermal and electrical requirements before finalizing acquisition.

Voltage Reference Selection Notes

Select this component when a high-accuracy adjustable reference is required in surface-mount applications. The 8-pin SOIC package facilitates automated assembly processes. Consider the ±2.2% initial accuracy and 100 mA current capability as primary selection criteria for designs demanding robust regulation without excessive power consumption.

Voltage Reference Part Context

This device belongs to the LM431 family of adjustable precision Zener shunt regulators. It serves as a direct replacement for legacy non-NOPB variants, ensuring compliance with modern environmental standards while maintaining functional equivalence. The NOPB suffix indicates lead-free construction and enhanced material sustainability compared to older manufacturing runs.

Voltage Reference Replacement Considerations

LM431AIMX is a confirmed substitute part number offering identical electrical characteristics and pinout configuration.