LM385D-2.5R2

Overview

The LM385D-2.5R2 is a micropower two-terminal bandgap voltage reference diode manufactured by onsemi. It provides a fixed nominal output voltage of 2.5V with an initial tolerance grade of 1.0%. The device operates over a wide current range from 10 µA to 20 mA, ensuring stable performance across varying supply conditions. It features exceptionally low dynamic impedance and low noise characteristics. The component is designed for surface mount applications in the SOIC-8 package.

Feature Summary

• Micropower two-terminal bandgap voltage regulator diode
• Low dynamic impedance and low noise operation
• Tight voltage tolerances achieved through on-chip trimming
• Stable operation over time and temperature

Applications

• Portable instrumentation circuits
• Battery-powered regulators
• Analog circuitry requiring extended battery life
• Applications with widely varying supplies

Procurement Notes

Verify that the specific suffix 'R2' corresponds to the standard tape-and-reel packaging configuration as defined in the official datasheet. Confirm the manufacturer designation matches onsemi specifications rather than legacy Motorola or NXP documentation. Ensure the part number aligns with the 1.0% tolerance grade variant to avoid confusion with other accuracy grades within the LM385 series.

Selection Notes

Select this component when a precise 2.5V reference is required with minimal quiescent current consumption. The wide operating current range allows flexibility in biasing resistor selection. Consider the surface mount package for automated assembly processes. Evaluate thermal management requirements if operating near maximum current limits to maintain stability.

Part Context

This device belongs to the LM285/LM385 series of micropower voltage references. The LM385 variants typically offer improved performance characteristics compared to the LM285 series. The 'D' suffix indicates the SOIC-8 surface mount package, while the '2.5' denotes the 2.5V output voltage. This series is widely used in precision analog applications.

Replacement Considerations

LM385BD-2.5: Offers similar functionality but may have different tolerance grades or packaging variations. Verify pinout compatibility and electrical parameters before substitution.