LM4132AQ1MFR2.5

Voltage Reference Overview

The LM4132AQ1MFR2.5 is an automotive-grade precision low-dropout voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.4% and a temperature coefficient of 30 ppm/°C. The device operates within an input voltage range up to 5.5 V and supports a maximum shunt current of 20 mA. It functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount format, it meets AEC-Q100 qualification standards for automotive applications.

Voltage Reference Feature Summary

• AEC-Q100 qualified for automotive reliability requirements
• Precision series architecture with low dropout operation
• Compact SOT-23-5 surface-mount package design

Voltage Reference Applications

• Automotive electronic systems requiring stable voltage references
• Data acquisition circuits in vehicle environments
• Analog-to-digital converter reference inputs

Voltage Reference Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct voltage, accuracy, and packaging specifications. Confirm AEC-Q100 automotive qualification status is required for the specific application environment. Check for any recent product lifecycle notices or obsolescence warnings directly from the manufacturer before finalizing procurement plans.

Voltage Reference Selection Notes

Select this component when automotive grade certification and high precision are mandatory. The 0.4% initial accuracy suits applications demanding tight tolerance without trimming. Ensure the system input voltage remains below the 5.5 V maximum limit. Consider the SOT-23-5 footprint constraints during PCB layout. Verify thermal management capabilities for the intended operating temperature range.

Voltage Reference Part Context

This device belongs to the LM4132-Q1 family of precision shunt voltage references designed specifically for automotive use. It shares architectural similarities with other LM4132 variants but distinguishes itself through automotive qualification and specific accuracy grades. The family offers various output voltages and accuracy levels to suit different system requirements while maintaining consistent form factors.

Voltage Reference Replacement Considerations

Direct substitutes include other LM4132-Q1 variants with matching 2.5 V output and similar accuracy grades. Cross-reference with LM4132DQ1MFR2.5 for equivalent performance in automotive contexts. Verify pin compatibility and thermal characteristics before substituting.