LM4040C50QFTA

Overview

The LM4040C50QFTA is an automotive-compliant precision micropower shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 5.0 V with an initial tolerance of ±0.5% at +25°C. The device operates within a wide current range of 60 µA to 15 mA and maintains stability across an extended temperature range from -40°C to +125°C. It features a maximum temperature coefficient of 100 ppm/°C and low noise characteristics, housed in a compact SOT-23 surface-mount package.

Feature Summary

• Automotive compliant design suitable for applications requiring specific change control
• Capable of maintaining excellent stability when used with capacitive loads without requiring an output capacitor
• Offers pin-for-pin compatibility with industry standard LM4040 voltage references

Applications

• Automotive reference voltages
• Automotive data acquisition systems

Procurement Notes

Verify that the component is sourced through authorized channels to ensure authenticity. Confirm compliance with AEC-Q100 qualification standards and PPAP capability requirements. Ensure the supplier adheres to IATF 16949 certified manufacturing processes. Validate RoHS 3 and halogen-free specifications against project constraints before finalizing procurement.

Selection Notes

Select this component for designs requiring high accuracy and reliability in space-constrained environments. The SOT-23 package is ideal where board area is limited. Consider the wide operating current range for power-restricted circuits. Verify that the load conditions remain within the specified minimum and maximum current limits to maintain regulation.

Part Context

This part belongs to the LM4040Q family of bandgap circuits designed specifically for automotive applications. It serves as a direct replacement for commercial grade versions while meeting stricter automotive quality and reliability standards. The family includes various voltage options and tolerance grades to suit different system requirements.

Replacement Considerations

The LM4040Q is designed as a pin-for-pin compatible alternative to the industry standard LM4040 voltage reference. When substituting, verify that the original component's thermal and electrical ratings align with the LM4040Q specifications to ensure proper circuit functionality.