LM431ACM3

Voltage Reference Overview

The LM431ACM3 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 2%. The device supports a maximum shunt current of 100 mA and has a temperature coefficient of 97 ppm/°C. It functions across a minimum operating temperature of -40°C and a maximum of +85°C. The component is housed in an SOIC-8 surface-mount package.

Voltage Reference Feature Summary

• Adjustable reference voltage capability for flexible circuit design
• Precision regulation with low temperature drift characteristics
• High output current drive capacity for load requirements

Voltage Reference Applications

• Voltage reference sources in power supply circuits
• Programmable output regulators
• Comparator replacement in analog signal processing

Voltage Reference Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm pinout compatibility and electrical tolerances. Ensure the procurement channel provides traceability to original manufacturing sources. Confirm RoHS compliance status matches project requirements. Validate that the SOIC-8 package dimensions align with PCB footprint specifications before finalizing orders.

Voltage Reference Selection Notes

Select this component when an adjustable shunt regulator with 2% initial accuracy is required. Consider the 100 mA current limit for load driving capabilities. Evaluate the 97 ppm/°C temperature coefficient against thermal stability needs. Compare the SOIC-8 package constraints with available board space. Verify input voltage limits do not exceed the 37 V maximum rating.

Voltage Reference Part Context

This part belongs to the LM431 series of adjustable precision Zener shunt regulators. It serves as a direct functional equivalent to traditional fixed-voltage Zener diodes but offers programmable output. The series is widely utilized in industrial and consumer electronics for stable voltage referencing and regulation tasks requiring compact surface-mount solutions.

Voltage Reference Replacement Considerations

LM431ACM3/NOPB is a documented substitute offering identical functionality with updated environmental compliance markings.