LM4040CIM7X-2.5/NOPB

Overview

The LM4040CIM7X-2.5/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 2.5 V with an initial accuracy of ±0.5%. It operates within a temperature range of -40°C to +85°C and utilizes the SC-70-5 package. The device exhibits a temperature coefficient of 150 ppm/°C, supports a maximum cathode current of 15 mA, and requires a minimum operating current of 65 µA.

Feature Summary

• Provides stable precision voltage referencing for sensitive analog circuits
• Designed for low-power applications through micropower operation
• Offers reliable performance across standard industrial temperature ranges

Applications

• Portable instrumentation systems requiring precise voltage references
• Battery-powered measurement devices needing low quiescent current
• Data acquisition systems utilizing analog-to-digital converters
• Microcontroller-based embedded designs with external reference needs

Procurement Notes

Verify that the ordering suffix X indicates tape-and-reel packaging configuration rather than functional changes. Confirm the specific SC-70-5 package variant matches design constraints. Ensure the NOPB designation confirms lead-free compliance for assembly processes. Cross-check the 2.5V tolerance against circuit requirements before finalizing procurement orders.

Selection Notes

Select this component when space-constrained PCB layouts require the compact SC-70-5 footprint instead of larger packages. Choose it for applications demanding lower power consumption compared to standard shunt references while maintaining acceptable accuracy levels. Consider its thermal stability characteristics for environments where moderate temperature drift is permissible within system specifications.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The family includes various output voltages and package options like SOT-23 and TO-92. The CIM7X suffix specifically denotes the commercial grade temperature range and the SC-70-5 surface-mount package format used in modern miniaturized electronics designs.

Replacement Considerations

• LM4040CIM3-2.5/NOPB (SOT-23 package)
• LM4040QIM3-2.5/NOPB (Automotive qualified version)

FAQ

What is the minimum operating current required for proper regulation?

The device requires a minimum cathode current of 65 µA to maintain accurate voltage regulation.

Does the 'X' suffix change the electrical function?

No, the 'X' suffix typically indicates tape-and-reel packaging and does not alter the electrical characteristics or pinout.