LMV431IM5

Voltage Reference Overview

The LMV431IM5/NOPB is a low-voltage adjustable precision shunt regulator 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 has a maximum input voltage of 35 V and supports a maximum shunt current of 15 mA, with a minimum operating current of 100 µA. It exhibits a temperature coefficient of 138 PPM/°C and functions between -40°C and +85°C. The component is housed in a SOT-23-5 surface-mount package.

Voltage Reference Feature Summary

• Adjustable output voltage capability starting from a low reference level of 1.24 V
• Precision shunt regulation architecture for stable voltage referencing
• Low-power operation suitable for battery-powered applications

Voltage Reference Applications

• Portable equipment requiring low-voltage references
• Battery-operated systems needing precise voltage monitoring
• General-purpose voltage regulation circuits

Voltage Reference Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance when sourcing. Confirm the SOT-23-5 package designation matches the target PCB footprint. Ensure the 1.5% accuracy grade meets circuit tolerance requirements. Check that the 15 mA shunt current limit is sufficient for the intended load conditions. Validate the -40°C to +85°C industrial temperature range against environmental specifications.

Voltage Reference Selection Notes

Select this component when a low-voltage adjustable reference is required in a compact surface-mount form factor. The 1.24 V minimum output allows for lower supply voltages compared to standard 2.5 V references. Consider the 1.5% initial accuracy for cost-sensitive designs where tighter tolerances are not critical. The SOT-23-5 package offers space efficiency for dense layouts.

Voltage Reference Part Context

This part belongs to the LMV431 family of low-voltage adjustable precision shunt regulators from Texas Instruments. It serves as a drop-in replacement for similar low-voltage reference devices in portable electronics. The family is designed to provide stable reference voltages in applications where power consumption and physical size are constrained.

Voltage Reference Replacement Considerations

LMV431AIMF/NOPB offers improved 1% accuracy in a SOT-23-3 package. LMV431CM5-NOPB provides 1.5% accuracy in a SOT-23 package. Verify pinout compatibility when substituting with different package variants.