LM431CCM3/NOPB

Voltage Reference Overview

The LM431CCM3/NOPB is a three-terminal adjustable shunt regulator manufactured by Texas Instruments. It operates within an output voltage range of 2.495 V to 37 V and supports a maximum shunt current of 100 mA. The device features an initial accuracy of 0.5% and a temperature coefficient of 97 ppm/°C. It functions reliably across a temperature range from -40°C to +85°C. The component is housed in a SOT-23-3 surface-mount package.

Voltage Reference Feature Summary

• Provides precise adjustable voltage regulation via external resistor network
• Ensures thermal stability across the full operating temperature range
• Offers high accuracy with low temperature drift characteristics

Voltage Reference Applications

• Precision voltage reference sources
• Programmable power supply outputs
• Battery-operated equipment monitoring

Voltage Reference Procurement Notes

Verify the specific suffix 'CCM3' against the official Texas Instruments datasheet to confirm the SOT-23-3 package and commercial grade specifications. Ensure the 'NOPB' designation matches lead-free and RoHS compliance requirements for your assembly process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Voltage Reference Selection Notes

Select this component when a compact surface-mount solution is required for adjustable shunt regulation. The SOT-23-3 package suits space-constrained designs. Verify that the 100 mA current capability meets load requirements. Consider the 0.5% initial accuracy and 97 ppm/°C temperature coefficient against system precision needs compared to fixed or higher-grade alternatives.

Voltage Reference Part Context

This device belongs to the LM431 family of adjustable precision Zener shunt regulators. It serves as a direct functional replacement for legacy TL431 devices, offering improved performance metrics while maintaining pin compatibility. The family is widely used in industrial and consumer electronics for voltage regulation and protection circuits.

Voltage Reference Replacement Considerations

The LM431CIM3X/NOPB is a documented substitute within the same series. Verify package equivalence and electrical parameter alignment before substitution.