LM431CCM/NOPB

Voltage Reference Overview

The LM431CCM/NOPB 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 0.5%. The device supports a maximum shunt current of 100 mA and functions across a temperature range from -40 °C to +85 °C. Packaged in an SOIC-8 surface-mount format, it serves as a high-performance reference voltage solution for power management applications.

Voltage Reference Feature Summary

• Provides precise adjustable voltage regulation with tight initial accuracy tolerance
• Operates as a shunt regulator capable of handling up to 100 mA cathode current
• Designed for surface-mount integration using standard SOIC-8 packaging

Voltage Reference Applications

• Precision voltage references in power supply circuits
• Programmable linear regulators
• Voltage monitoring and protection circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'CCM' against official Texas Instruments documentation to confirm package type and accuracy grade. Ensure the 'NOPB' designation aligns with current RoHS compliance requirements. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and avoid counterfeit components during procurement.

Voltage Reference Selection Notes

Select this component when a 0.5% initial accuracy is required for shunt regulation. Compare performance against the LM431ACM variant if higher accuracy is unnecessary. Consider the SOIC-8 footprint constraints and thermal characteristics relative to through-hole alternatives like the LM431CIZ for PCB layout optimization.

Voltage Reference Part Context

This device belongs to the LM431 family of adjustable precision Zener shunt regulators. It shares functional similarities with other variants such as the LM431CIM3/NOPB but differs in package style and specific accuracy grades. The series is widely used for replacing fixed Zener diodes in voltage reference and control loop applications.

Voltage Reference Replacement Considerations

The LM431ACM/NOPB offers similar functionality with a 2% accuracy grade. The LM431CIM3/NOPB provides comparable performance in a SOT-23-3 package.