LM4040B50IDBZT

Overview

The LM4040B50IDBZT is a micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 5V with an initial accuracy of ±0.2%. It operates within a temperature range of -40°C to +125°C and utilizes a SOT-23-3 surface-mount package. Key electrical specifications include a maximum shunt current of 15 mA, a minimum operating cathode current of 74 µA, and a temperature coefficient of 150 ppm/°C.

Feature Summary

• Provides high precision voltage referencing with ±0.2% initial accuracy
• Operates over an extended industrial temperature range up to 125°C
• Designed for low power consumption suitable for battery-powered applications

Applications

• Portable instrumentation requiring stable reference voltages
• Battery-powered measurement systems
• Data acquisition systems needing precise analog references

Procurement Notes

Verify the specific suffix 'B' indicates the required ±0.2% accuracy grade and '50' denotes the 5V output. Confirm the 'IDBZT' suffix corresponds to the SOT-23-3 package and tape-and-reel quantity. Ensure compatibility with RoHS3 standards if applicable to your manufacturing process.

Selection Notes

Select this component when higher accuracy than the standard C-grade (±0.5%) is required for 5V references. The B-grade offers tighter tolerance at the cost of potentially higher unit price. Consider the 150 ppm/°C temperature coefficient against application thermal stability requirements.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. It serves as a precision alternative to Zener diodes, offering better stability and lower noise. The device is designed to replace discrete components in space-constrained designs using the compact SOT-23-3 package.

Replacement Considerations

LM4040CEM3-5.0/NOPB is listed as an alternate option within the same manufacturer portfolio.