LM4040B30IDBZR

Overview

The LM4040B30IDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3V with an initial accuracy of ±0.2%. The device operates within a temperature range of -40°C to +85°C and features a low temperature coefficient of 100ppm/°C. It draws a typical cathode current of 82µA and supports a maximum shunt current of 15mA. Packaged in a compact SOT-23-3 surface-mount case, it is designed for applications requiring high stability and low power consumption.

Feature Summary

• Provides a stable 3V reference voltage with high initial accuracy of ±0.2%.
• Operates with ultra-low quiescent current of 82µA for efficient power management.
• Features a low temperature coefficient of 100ppm/°C for thermal stability.
• Utilizes a compact SOT-23-3 package suitable for space-constrained designs.

Applications

• Portable battery-powered instrumentation
• Handheld meters and test equipment
• Data acquisition systems
• Microprocessor supervisory circuits

Procurement Notes

Verify the specific suffix IDBZR indicates tape-and-reel packaging when ordering. Confirm that the B-grade accuracy (±0.2%) meets design requirements compared to other grades like A or D. Ensure the operating environment remains within the specified -40°C to +85°C range. Check for RoHS compliance status if required by regional regulations. Validate pinout compatibility with existing PCB footprints before finalizing procurement.

Selection Notes

Select this component when a 3V reference with tighter tolerance than standard devices is needed. Compare against LM4040A30IDBZR for higher accuracy or LM4040D30QDBZR for extended temperature ranges. Consider the 82µA current draw against system power budgets. Evaluate noise specifications if used in sensitive analog front ends. Ensure the SOT-23-3 footprint matches the target board layout constraints.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed voltages and accuracy grades packaged in small form factors. The LM4040 series is widely used in portable electronics due to its low power profile. Other variants include different voltage outputs and temperature coefficients to suit diverse application needs.

Replacement Considerations

LM4040B30IDBZT is the tray-packaged equivalent of this reel-part. LM4040B30IDBZRG4 is a lead-free variant with identical electrical characteristics. Verify package compatibility and marking differences when substituting.