LMV431CZ/NOPB

Voltage Reference Overview

The LMV431CZ/NOPB is a low-voltage adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within an output voltage range of 1.24 V to 30 V and features an initial accuracy of 1.5%. The device supports a maximum shunt current of 15 mA and has a maximum series input voltage of 35 V. It functions reliably across a temperature range from -40 °C to +85 °C, with a temperature coefficient of 138 ppm/°C. The component is housed in a TO-92-3 through-hole package.

Voltage Reference Feature Summary

• Provides adjustable precision voltage referencing with a minimum reference voltage of 1.24 V
• Designed for low-voltage applications with high stability over the operating temperature range
• Utilizes a standard three-terminal shunt regulator architecture for simple circuit integration

Voltage Reference Applications

• Low-voltage power supply regulation circuits
• Portable electronic devices requiring precise voltage references
• Battery-powered systems needing stable reference voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's latest documentation. Ensure the ordering part number matches the required tolerance grade (C) and package type (TO-92-3). Cross-reference the datasheet revision date to confirm electrical characteristics have not changed. Confirm that the supplier provides genuine Texas Instruments components to avoid counterfeit risks.

Voltage Reference Selection Notes

Select this component when a low-voltage adjustable reference is required instead of the higher-voltage LM431 family. The 1.24 V internal reference allows for lower output voltages than standard Zener alternatives. Consider the 15 mA current limit when designing feedback networks; higher load currents may require external buffering. Verify that the 1.5% initial accuracy meets the system's error budget requirements compared to tighter tolerance options.

Voltage Reference Part Context

This device belongs to the LMV431 series, which is optimized for low-voltage operation compared to the legacy LM431. It serves as a drop-in replacement for fixed voltage references in many low-power designs. The TO-92-3 package facilitates easy prototyping and through-hole assembly. It is part of Texas Instruments' broader portfolio of precision analog voltage references.

Voltage Reference FAQ

What is the minimum output voltage achievable with the LMV431CZ/NOPB?

The minimum output voltage is determined by the internal reference voltage of 1.24 V.

Is the LMV431CZ/NOPB suitable for high-current applications?

No, it has a maximum shunt current rating of 15 mA, making it unsuitable for direct high-current regulation without additional buffering.