LM4040C25H5TA

Overview

The LM4040C25H5TA is a precision micropower shunt voltage reference manufactured by Diodes Incorporated, providing a fixed 2.5V output with an initial tolerance of ±0.5%. It utilizes the SC70-5 package and operates within an extended temperature range of -40°C to +125°C. The device features a typical temperature coefficient of 20ppm/°C at 10mA and maintains stability across a wide operating current range from 60µA to 15mA. Electrical characteristics include a dynamic output impedance of 0.9Ω at 1mA and low noise performance.

Feature Summary

• Compact surface-mount design in a small outline package suitable for space-constrained applications
• High precision bandgap circuit architecture ensuring stable voltage references over industrial temperatures
• Capacitive load tolerant topology that eliminates the need for external output capacitors
• Compliant with RoHS directives and free from halogen and antimony

Applications

• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Data acquisition systems

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm the specific ordering suffix matches the required package type and tolerance grade. Ensure compliance with environmental regulations relevant to the target market. Review the manufacturer's quality assurance documentation for lead-free status verification prior to integration into production workflows.

Selection Notes

Select this variant when a 2.5V reference with 0.5% accuracy is required in a compact footprint. Consider the minimum operating current limits relative to the application's quiescent requirements. Evaluate thermal management needs based on the package's thermal resistance characteristics. Verify compatibility with existing PCB layouts designed for the specified pinout configuration.

Part Context

This component belongs to the LM4040 family of micropower shunt voltage references. The family offers multiple voltage options including 3.0V, 3.3V, 4.096V, and 5.0V with varying accuracy grades. The H5 suffix specifically denotes the SC70-5 package, which is noted as an End of Life option in official documentation, indicating potential availability constraints compared to standard SOT23 variants.

Replacement Considerations

Official substitutes include other LM4040 series parts such as LM4040C25FTA in the SOT23 package. Cross-reference electrical parameters like temperature coefficient and operating current range to ensure functional equivalence. Verify pinout compatibility if replacing with packages having different physical dimensions.