LM431AIBPX

Voltage Reference Overview

The LM431AIBPX is an adjustable precision shunt voltage reference IC manufactured by Texas Instruments. It operates within a supply voltage range of 2.495 V to 37 V and provides an initial accuracy of ±2.2%. The device features a maximum cathode current of 100 mA and a temperature coefficient of 50 ppm/°C. It is housed in a 4-DSBGA package and supports surface-mount installation. The operational temperature range extends from -40°C to +85°C.

Voltage Reference Feature Summary

• Adjustable output voltage capability via external resistor divider
• High precision with low temperature coefficient for stable regulation
• Compact surface-mount packaging suitable for space-constrained designs

Voltage Reference Applications

• Precision power supply regulation circuits
• Battery-powered equipment requiring accurate voltage monitoring
• Industrial control systems needing reliable shunt references

Voltage Reference Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot traceability requirements prior to procurement. Ensure the supplier provides valid documentation matching the LM431AIBPX part number to avoid counterfeit risks.

Voltage Reference Selection Notes

Select this component when a compact, high-accuracy shunt reference is required for adjustable voltage applications. Consider the 4-DSBGA package constraints and thermal management needs. Verify that the 100 mA cathode current rating meets the circuit's sink requirements and that the ±2.2% initial accuracy aligns with system tolerance specifications.

Voltage Reference Part Context

This component belongs to the LM431 family of programmable shunt regulators. It serves as a versatile reference element in power management integrated circuits (PMIC). The device replaces older discrete zener diode solutions by offering superior stability and adjustability within a small footprint.

Voltage Reference Replacement Considerations

LM431AIBP is a compatible variant in the same series. Verify pinout compatibility and package dimensions before substitution.