LM4040C30IDBZR

Overview

The LM4040C30IDBZR is a precision shunt voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 3 V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100 ppm/°C. It supports a maximum shunt current of 15 mA and requires a minimum cathode current of 60 µA for regulation. The component is housed in a surface-mount SOT-23-3 package.

Feature Summary

• Provides a stable, fixed 3 V reference output suitable for precision applications
• Delivers high initial accuracy of ±0.5% for reliable circuit performance
• Operates efficiently with low minimum cathode current requirements
• Designed for surface-mount installation in compact electronic assemblies

Applications

• Portable battery-powered equipment requiring precise voltage monitoring
• Data acquisition systems needing accurate analog-to-digital conversion references
• Industrial process control circuits utilizing shunt regulator topologies
• Temperature sensing interfaces requiring stable reference potentials

Procurement Notes

Verify the specific suffix IDBZR confirms the SOT-23-3 surface-mount package and commercial temperature grade. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the required 3 V output level and ±0.5% tolerance specifications for the target application environment.

Selection Notes

Select this component when a fixed 3 V reference is required in a small surface-mount footprint. The ±0.5% accuracy and 100 ppm/°C temperature coefficient suit general-purpose precision applications. Consider the 15 mA maximum current capability and 60 µA minimum operating current when designing the biasing network for optimal stability and power efficiency.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades in compact packages. The LM4040C30IDBZR specifically targets cost-sensitive, space-constrained designs requiring reliable voltage regulation without the complexity of series regulators.

FAQ

What is the minimum cathode current required for proper regulation?

The LM4040C30IDBZR requires a minimum cathode current of 60 µA to maintain regulation.

Does this component support through-hole mounting?

No, the LM4040C30IDBZR is designed exclusively for surface-mount technology using the SOT-23-3 package.