LM431CCM

Voltage Reference Overview

The LM431CCM is a programmable shunt regulator manufactured by onsemi, designed for precision voltage reference applications. It operates within an output voltage range of 2.495 V to 36 V and features an initial accuracy of ±0.5%. The device supports a maximum shunt current of 100 mA and maintains a typical temperature coefficient of 50 ppm/°C. It functions with a series reference input voltage up to 37 V and is rated for operation between -25°C and +85°C. Packaged in the SOT-23-3 surface-mount format, this component integrates a bandgap reference core for stable performance across varying thermal conditions.

Voltage Reference Feature Summary

• Provides adjustable voltage referencing through external resistor feedback networks
• Ensures high precision with tight initial tolerance specifications
• Integrates internal bandgap reference architecture for thermal stability

Voltage Reference Applications

• Precision voltage regulation circuits
• Programmable power supply outputs
• Battery management system monitoring

Voltage Reference Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm package type and tolerance grade. Ensure compatibility with surface-mount assembly processes given the small form factor. Cross-reference electrical parameters with design requirements to validate operational limits under expected thermal profiles.

Voltage Reference Selection Notes

Select this component when a compact surface-mount solution is required for adjustable voltage references. Consider the ±0.5% accuracy requirement and the 100 mA current capability relative to load demands. Evaluate the operating temperature range to ensure suitability for the intended environmental conditions during circuit design.

Voltage Reference Part Context

This part belongs to the LM431 family of programmable shunt regulators, widely utilized for their reliability and precision. The LM431CCM variant specifically offers the SOT-23-3 packaging, distinguishing it from through-hole alternatives like the TO-92 or larger SOIC packages found in other family members while maintaining core electrical characteristics.

Voltage Reference Replacement Considerations

Compatible substitutes include the TL431CIM3/NOPB from Texas Instruments and the KA431 series from various manufacturers. Verify pinout compatibility and electrical parameter alignment before substitution.