LM4040BEX3-5.0-T

Overview

The LM4040BEX3-5.0-T is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated, designed for precision applications requiring stable output voltages in compact surface-mount configurations. This component operates within the LM4040B series and provides a fixed 5 V output with an initial accuracy of 0.2%. It features a temperature coefficient of 100 PPM/°C and supports a maximum shunt current of 15 mA. The device is housed in a SC-70-3 package, suitable for space-constrained designs, and functions reliably across an operating temperature range from -40°C to +125°C.

Feature Summary

• Provides a fixed 5 V reference output with high precision and low power consumption.
• Operates effectively over an extended industrial temperature range up to 125°C.
• Utilizes a compact SC-70-3 surface-mount package for efficient board space utilization.

Applications

• Portable battery-powered instrumentation systems
• Data acquisition and measurement circuits
• Microcontroller analog-to-digital converter references

Procurement Notes

Verify the specific suffix 'BEX3' against official manufacturer documentation to confirm the exact accuracy grade and package variant. Ensure compatibility with SC-70-3 footprints during PCB layout. Confirm RoHS compliance status through the latest datasheet revision before procurement.

Selection Notes

Select this component when a 5 V reference with 0.2% initial accuracy is required in a small form factor. Consider the 100 PPM/°C temperature coefficient for thermal stability requirements. Evaluate the 15 mA maximum shunt current capability against load conditions to ensure proper regulation without exceeding limits.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references, which are widely used for providing stable reference voltages in various electronic circuits. The LM4040 series is known for its versatility, offering multiple output voltages and accuracy grades in compact packages like SOT-23 and SC-70.

Replacement Considerations

LM4040AEX3-5.0+T offers similar functionality with potentially different accuracy specifications. LM4040DIX3-5.0+T provides a comparable shunt reference in a similar package but may have distinct performance characteristics. Verify electrical parameters and pinout compatibility before substitution.