LM4040BIM3-3.0

Overview

The LM4040BIM3-3.0 is a micropower shunt voltage reference manufactured by Texas Instruments, operating within the LM4040 series. It provides a fixed output voltage of 3V with an initial accuracy of ±0.2%. The device features a temperature coefficient of 150 ppm/°C and supports a maximum cathode current of 15 mA. Designed for surface-mount installation in a compact SOT-23-3 package, it operates reliably across a temperature range from -40°C to +85°C.

Feature Summary

• Provides stable fixed reference voltage with high precision
• Operates as a shunt regulator with low power consumption
• Compact three-terminal surface-mount design

Applications

• Precision analog-to-digital converter references
• Portable instrumentation circuits
• Battery-powered measurement systems

Procurement Notes

Verify the specific suffix and manufacturer designation when sourcing. Confirm that the component matches the exact electrical specifications required for the target application. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 3V reference with tight tolerance is required in a small form factor. Consider the 150 ppm/°C temperature drift for applications requiring stability over wide temperature ranges. Evaluate the 15 mA current limit against load requirements to ensure proper regulation under all operating conditions.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The series offers various fixed voltage options and accuracy grades. The 'B' grade indicates tighter initial accuracy compared to standard variants. The IM3 suffix denotes the specific SOT-23-3 package configuration used for surface-mount assembly.

Replacement Considerations

LM4040BIM3X-3.0/NOPB is a documented equivalent variant within the same product line.