LM4040AIM3-2.5

Overview

The LM4040AIM3-2.5 is a precision micropower shunt voltage reference manufactured by Texas Instruments, designed for applications requiring stable voltage regulation in compact form factors. It operates within a temperature range of -40°C to +85°C and utilizes a SOT-23-3 surface-mount package. The device provides a nominal output voltage of 2.5 V with an initial accuracy of ±0.1% and a temperature coefficient of 100 ppm/°C. Maximum shunt current capability is rated at 15 mA, ensuring efficient power management in low-current circuits.

Feature Summary

• Provides high-precision voltage regulation with tight initial accuracy tolerances
• Features low temperature coefficient for stable performance across operating ranges
• Designed as a micropower shunt reference for energy-efficient circuitry
• Utilizes compact SOT-23 packaging for space-constrained board layouts

Applications

• Portable battery-powered instrumentation systems
• Handheld measurement devices requiring stable reference voltages
• Data acquisition systems needing precise analog references
• Medical equipment requiring reliable voltage regulation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential counterfeit risks. Confirm RoHS compliance status and specific lot traceability requirements before procurement. Check for obsolescence notices or lifecycle changes that may affect long-term supply availability. Ensure proper handling procedures are followed during storage and assembly to maintain device integrity.

Selection Notes

Evaluate thermal stability requirements against the specified temperature coefficient when selecting this component for critical applications. Consider the maximum shunt current limits to ensure adequate headroom for circuit operation. Compare package dimensions against available PCB real estate to confirm compatibility with existing layout constraints. Assess initial accuracy needs to determine if tighter tolerance variants are necessary for specific design goals.

Part Context

This component belongs to the LM4040-N series of precision micropower shunt voltage references from Texas Instruments. The series offers various fixed voltage options and accuracy grades to suit different application requirements. The LM4040AIM3-2.5 specifically targets high-precision needs within the standard industrial temperature range, providing a reliable solution for voltage reference applications in consumer and industrial electronics.

Replacement Considerations

LM4040AIM3X-2.5/NOPB serves as a verified equivalent part number offering identical electrical characteristics and pinout configuration. Verify package compatibility and lead-free status when substituting to ensure seamless integration into existing designs without requiring layout modifications.