LM4040C30IDBZRG4

Overview

The LM4040C30IDBZRG4 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3V 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 100ppm/°C. It consumes 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 exhibits low noise characteristics suitable for precision applications.

Feature Summary

• Provides stable 3V reference with high initial accuracy
• Ultra-low power consumption for battery-operated systems
• Compact SOT-23-3 surface-mount packaging

Applications

• Portable instrumentation requiring low power
• Battery-powered measurement devices
• Precision data acquisition systems

Procurement Notes

Verify the G4 suffix indicates lead-free/RoHS compliance per manufacturer specifications. Confirm the package type matches the design requirements. Ensure thermal management aligns with the specified operating temperature range. Check for any specific handling instructions related to the surface-mount format.

Selection Notes

Select this component when a 3V reference with ±0.5% tolerance is required. Consider the low quiescent current for energy efficiency. Verify that the SOT-23-3 footprint fits the PCB layout. Compare temperature coefficients if wider operating ranges are needed.

Part Context

This part belongs to the LM4040 family of micropower shunt references. It shares core architecture with other variants differing in voltage and accuracy grades. The family is designed for cost-sensitive, space-constrained applications requiring reliable voltage regulation without external components.

Replacement Considerations

LM4040C30IDBZR is the non-RoHS equivalent. LM4040C30ILPR offers through-hole TO-92-3 packaging. LM4040D30IDBZR provides 1% accuracy. Verify pinout compatibility before substitution.