LM4132BQ1MFR2.5

Voltage Reference Overview

The LM4132BQ1MFR2.5 is an automotive-grade precision low-dropout shunt voltage reference manufactured by Texas Instruments. It provides a fixed output of 2.5 V with an initial accuracy of ±0.1%. The device operates within a supply voltage range of 2.7 V to 6 V and supports a maximum shunt current of 20 mA. It features a temperature coefficient of 30 ppm/°C and functions reliably across an extended junction temperature range from -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount footprint, it meets AEC-Q100 qualification standards for automotive applications.

Voltage Reference Feature Summary

• Automotive-grade reliability certified under the AEC-Q100 standard for robust performance in vehicle environments.
• High-precision voltage regulation with tight initial tolerance ensuring accurate reference potential.
• Low dropout operation allowing efficient power management within constrained input voltage margins.

Voltage Reference Applications

• Automotive sensor signal conditioning circuits
• Battery management system (BMS) monitoring
• In-vehicle data acquisition systems

Voltage Reference Procurement Notes

Verify the specific suffix 'BQ1' against official Texas Instruments documentation to confirm the exact accuracy grade and automotive qualification status. Ensure the ordering part number matches the required package variant and reel specifications. Cross-reference the datasheet revision history to validate parameter consistency before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when designing automotive electronics requiring a stable 2.5 V reference with high initial accuracy. The SOT-23-5 package suits space-constrained PCB layouts. Verify that the operating environment remains within the specified -40°C to +125°C temperature range to maintain the guaranteed 30 ppm/°C drift specification.

Voltage Reference Part Context

This device belongs to the LM4132 family of precision series voltage references designed for low-power applications. The LM4132 series offers various output voltages and accuracy grades. The BQ1 suffix indicates a specific automotive-qualified version with defined tolerance levels, distinguishing it from commercial variants within the same functional family.

Voltage Reference Replacement Considerations

Consult the official LM4132 datasheet for confirmed substitute part numbers. Verify pin compatibility and electrical parameters such as output voltage and temperature coefficient before substituting.