LM4128CQ1MF2.5/NOPB

Voltage Reference Overview

The LM4128CQ1MF2.5/NOPB is an automotive-grade series precision voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.5%. The device operates within a maximum input voltage of 6 V and supports a maximum shunt current of 20 mA. It features a temperature coefficient of 100 ppm/°C and functions across a junction temperature range of -40°C to +125°C. Packaged in a SOT-23-5 surface-mount case, it meets AEC-Q100 qualification standards for automotive applications.

Voltage Reference Feature Summary

• AEC-Q100 qualified for automotive reliability requirements
• Series precision reference architecture ensuring stable output
• Compact SOT-23-5 surface-mount package design

Voltage Reference Applications

• Automotive electronic systems requiring precise voltage references
• Data acquisition systems utilizing analog-to-digital conversion
• Portable instrumentation and measurement devices
• Microcontroller supply monitoring circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'C' indicates the ±0.5% accuracy grade distinct from other variants. Confirm the 'AQ1' designation aligns with required automotive qualification standards. Ensure the SOT-23-5 footprint matches the target PCB layout constraints. Validate that the 2.5 V output level satisfies the system's reference voltage requirements before procurement.

Voltage Reference Selection Notes

Select this component when automotive certification and compact packaging are mandatory. Choose the C-grade variant if ±0.5% accuracy suffices over tighter tolerances. Consider the 6 V maximum input limit and 20 mA current capability during circuit design. Evaluate thermal management needs given the wide operating temperature range and low power consumption characteristics.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references. It shares architectural similarities with non-automotive counterparts but includes enhanced durability testing for automotive environments. The device complements other Texas Instruments PMIC solutions by providing stable reference points for power management and signal conditioning circuits.

Voltage Reference Replacement Considerations

LM4128BMF-2.5/NOPB offers similar specifications but lacks automotive qualification. LM4128AQ1MF2.5/NOPB provides higher accuracy at ±0.1% while maintaining automotive status. Verify pinout compatibility and thermal performance when substituting these alternatives.