LM4040B33QFTA

Overview

The LM4040B33QFTA is an automotive-compliant precision micropower shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed reference voltage of 3.3V with an initial tolerance of ±0.2% at +25°C. The device operates within a wide current range from 60µA to 15mA and maintains stability over an extended temperature range of -40°C to +125°C. Packaged in a compact SOT-23 surface-mount format, it features a maximum temperature coefficient of 100 ppm/°C and low output noise characteristics.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards
• High precision bandgap circuit with ±0.2% initial tolerance
• Capable of driving capacitive loads without external compensation components
• Low power consumption suitable for space-constrained designs

Applications

• Automotive reference voltages
• Automotive data acquisition systems

Procurement Notes

Verify the specific ordering suffix 'Q' indicates automotive compliance and PPAP capability as defined by Diodes Incorporated. Confirm that the package code matches the required SOT-23 footprint and tape & reel specifications for automated assembly processes. Ensure design reviews account for the electrical contact between Pin 2 and Pin 3 inherent to this package type.

Selection Notes

Select this component when high accuracy is required alongside strict automotive reliability standards. The B-grade designation ensures tighter voltage tolerances compared to C or D grades. Consider the 60µA minimum operating current for low-power applications and verify that the 15mA maximum current rating accommodates the worst-case load conditions in the shunt regulator topology.

Part Context

This part belongs to the LM4040Q family of micropower shunt voltage references designed specifically for automotive environments. It serves as a pin-for-pin compatible alternative to industry standard commercial versions while offering enhanced quality control and manufacturing certifications required for IATF 16949 certified facilities.

Replacement Considerations

LM4040B33QFT