LM4040D30ILPR

Overview

The LM4040D30ILPR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3 V with an initial accuracy of ±1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum cathode current of 15 mA and requires a minimum operating current of 65 µA. Packaged in a TO-92-3 through-hole format, it is designed for applications requiring stable voltage references in compact spaces.

Feature Summary

• Provides a fixed 3 V precision reference output
• Operates with micropower consumption suitable for battery applications
• Delivers high accuracy with ±1% initial tolerance
• Supports through-hole mounting via TO-92-3 package

Applications

• Portable instrumentation systems
• Battery-powered measurement devices
• Data acquisition circuits
• Microprocessor supply monitoring

Procurement Notes

Verify the specific suffix ILPR confirms the TO-92-3 through-hole package variant rather than surface-mount options. Ensure the D grade designation aligns with the required ±1% accuracy specifications for your design. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Cross-reference the datasheet for thermal resistance values relevant to your PCB layout constraints.

Selection Notes

Select this component when a fixed 3 V reference is needed with moderate accuracy requirements. The TO-92-3 package is suitable for prototyping or low-volume production where through-hole assembly is preferred. Consider the 15 mA maximum current limit when designing the series resistor network. Evaluate the 150 ppm/°C temperature coefficient against your system's thermal stability needs.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references from Texas Instruments. The family offers various output voltages and accuracy grades (A, B, C, D) across different packages including SOT-23 and TO-92. The LM4040D30ILPR specifically targets cost-sensitive applications requiring reliable 3 V reference performance in a standard through-hole footprint.

Replacement Considerations

LM4040C30ILPR offers higher accuracy at ±0.5% but may have different availability. LM4040DIM3X-3.0/NOPB provides the same electrical characteristics in a surface-mount SOT-23-3 package. Verify pinout compatibility and thermal performance when substituting between package types.