LMV431CM5

Voltage Reference Overview

The LMV431CM5 is a low-voltage, adjustable precision shunt voltage reference manufactured by Texas Instruments (formerly National Semiconductor). It operates within an input voltage range of up to 35 V and provides an adjustable output voltage from 1.24 V to 30 V. The device features an initial accuracy of 1.5% and a temperature coefficient of 138 PPM/°C. It supports a maximum shunt current of 15 mA and functions reliably across an operating temperature range of -40°C to +85°C. The component is housed in a 5-pin SOT-23 surface-mount package.

Voltage Reference Feature Summary

• Provides stable, adjustable voltage reference functionality with high precision for circuit regulation.
• Designed for low-voltage applications with wide input voltage tolerance and low power consumption characteristics.
• Utilizes a compact SOT-23 surface-mount package suitable for space-constrained printed circuit board layouts.

Voltage Reference Applications

• Portable equipment requiring precise voltage regulation
• Battery-powered systems needing efficient power management
• General-purpose voltage reference circuits

Voltage Reference Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments acquired National Semiconductor. Confirm the specific suffix 'NOPB' indicates lead-free compliance if required by your assembly process. Ensure the ordering part number matches the exact package type and tape-and-reel specifications needed for your manufacturing line. Cross-reference datasheets to confirm pinout compatibility with existing designs.

Voltage Reference Selection Notes

Select this component when a low-cost, adjustable shunt regulator is required for low-voltage environments. Consider the 1.5% initial accuracy and 138 PPM/°C temperature coefficient against your circuit's stability requirements. The 15 mA maximum shunt current limits its use in high-current regulation scenarios. Evaluate the SOT-23 package size relative to available board space and thermal dissipation needs.

Voltage Reference Part Context

This device belongs to the LMV431 family of low-voltage adjustable shunt regulators. It serves as a direct successor or equivalent to the legacy LM431 series, offering improved performance at lower supply voltages. The transition from National Semiconductor to Texas Instruments means documentation and support are now managed under the TI brand, though the core architecture remains consistent with established industry standards for precision references.

Voltage Reference Replacement Considerations

LMV431CM5/NOPB is the complete ordering part number including packaging details. LMV431CM5-NOPB is listed as a variant in distributor databases, potentially indicating identical electrical specifications but differing packaging or lot codes. Verify functional equivalence before substitution.