LM4040C50FTA

Overview

The LM4040C50FTA is a precision micro-power shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 5.0V with an initial tolerance of ±0.5% at +25°C. The device operates within a wide current range from 60µA to 15mA and features a maximum temperature coefficient of 100 ppm/°C. It is housed in a surface-mount SOT-23 package and supports an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Provides stable reference voltage with high accuracy across varying temperatures
• Operates efficiently over a wide current range without requiring external capacitors
• Designed for compact space-constrained applications using small outline packages

Applications

• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Data acquisition systems

Procurement Notes

Verify the specific grade suffix 'C' corresponds to the required 0.5% tolerance and confirm the 'FTA' suffix indicates the correct SOT-23 packaging configuration. Ensure the application environment remains within the specified -40°C to +125°C operational limits to maintain performance specifications.

Selection Notes

Select this component when a 5.0V reference with 0.5% accuracy is required in a compact surface-mount form factor. Consider the 100 ppm/°C temperature coefficient for thermal stability requirements. Verify that the circuit design accommodates the minimum operating current of 60µA and maximum current of 15mA.

Part Context

This part belongs to the LM4040 family of bandgap circuits, which includes variants with different voltage outputs and tolerance grades (B-grade 0.2%, C-grade 0.5%, D-grade 1%). The LM4040 series is designed as a pin-for-pin compatible alternative to similar industry references, offering low noise and high capacitive load tolerance.

Replacement Considerations

LM4040B50FTA offers tighter 0.2% tolerance. LM4040D50FTA provides standard 1% tolerance. Both share the same 5.0V output and SOT-23 package.