LM385BZ-2.5RA

Overview

The LM385BZ-2.5RA is a micropower two-terminal bandgap voltage reference diode manufactured by onsemi. It provides a fixed nominal output voltage of 2.5 V with an initial accuracy of ±0.8%. The device operates within a wide current range from 20 µA to 20 mA, ensuring stable regulation across varying load conditions. It features low dynamic impedance and excellent temperature stability, making it suitable for precision analog applications requiring reliable voltage references in compact packages.

Feature Summary

• Micropower two-terminal bandgap voltage reference design
• Fixed 2.5 V output with high initial accuracy
• Wide operating current range for flexible biasing
• Low dynamic impedance for improved regulation

Applications

• Portable battery-powered instrumentation
• Precision analog-to-digital converter references
• Temperature compensation circuits
• Current loop transmitter references

Procurement Notes

Verify the specific suffix 'RA' against official onsemi documentation to confirm tape-and-reel packaging specifications and exact marking codes. Ensure the component matches the required lead-free status and RoHS compliance standards for your manufacturing process. Cross-reference the manufacturer date code and lot traceability requirements with your supply chain quality protocols before finalizing procurement orders.

Selection Notes

Select this component when a fixed 2.5 V reference is required with tight initial tolerance and low power consumption. The wide operating current range allows for efficient biasing in battery-operated systems. Consider the package type and thermal characteristics relative to your PCB layout constraints. Verify that the temperature coefficient meets the environmental stability requirements of your specific application environment.

Part Context

This part belongs to the LM385 series of micropower voltage references, which are widely used in industrial and consumer electronics. The 'B' grade indicates tighter initial accuracy compared to standard grades. The 'Z' typically denotes a plastic small-outline package variant, while 'RA' specifies the reel packaging configuration for automated assembly processes.

Replacement Considerations

Compatible substitutes include LM385BZ-2.5 from other manufacturers such as Texas Instruments or Analog Devices, provided pinouts and electrical parameters match. Verify equivalent accuracy grades and package dimensions to ensure mechanical compatibility without redesigning the footprint.