LMV431IM5X/NOPB

Voltage Reference Overview

The LMV431IM5X/NOPB is a shunt adjustable voltage reference from Texas Instruments, housed in a 5-pin SOT-23 package. It provides an adjustable output voltage ranging from 1.24 V to 30 V with an initial accuracy of 1.5%. The device supports a maximum cathode current of 15 mA and withstands a maximum series input voltage of 35 V. Operating within a temperature range of -40°C to +85°C, it features a temperature coefficient of 138 ppm/°C. Minimum cathode current is specified at 100 µA.

Voltage Reference Feature Summary

• Adjustable shunt regulation topology for precise voltage control
• Low-voltage operation capability starting at 1.24 V
• Integrated bandgap reference structure for stability

Voltage Reference Applications

• Portable battery-powered equipment requiring stable reference voltages
• Process control systems needing accurate analog signal conditioning
• Power supply circuits utilizing feedback loop regulation

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance status as defined by Texas Instruments. Confirm the 'X' designation corresponds to tape-and-reel packaging suitable for automated surface-mount assembly processes. Ensure the 1.5% initial accuracy grade meets the design requirements for the intended application tolerance levels.

Voltage Reference Selection Notes

Select this component when a low-cost, adjustable shunt regulator is required in a compact SOT-23-5 footprint. It is suitable for applications where a fixed reference is insufficient and an output range up to 30 V is needed. Consider the 138 ppm/°C temperature coefficient for thermal stability requirements in the operating environment.

Voltage Reference Part Context

This part belongs to the LMV431A family of low-voltage adjustable shunt regulators. It serves as a cost-effective alternative to discrete Zener diode networks, offering superior accuracy and lower temperature drift. The device functions similarly to a two-terminal adjustable Zener diode, providing a stable reference voltage for various analog and digital circuit interfaces.

Voltage Reference FAQ

What is the minimum cathode current required for proper regulation?

The device requires a minimum cathode current of 100 µA to maintain regulation within specified accuracy limits.

Does the output voltage range start from zero volts?

No, the adjustable output voltage range starts at a minimum of 1.24 V and extends up to 30 V.