LM285D-2-5

Overview

The LM285D-2-5 is a micropower shunt voltage reference manufactured by Texas Instruments, designed for applications requiring stable voltage regulation in compact surface-mount configurations. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±1.5%. The device operates within a temperature range of -40°C to +85°C and features a typical temperature coefficient of 20 ppm/°C. It supports a maximum shunt current of 20 mA and a minimum operating current of 20 µA. Packaged in an SOIC-8 format, it serves as a reliable reference source for analog circuits.

Feature Summary

• Provides a fixed 2.5 V reference voltage with high stability
• Operates efficiently at micropower levels with low current consumption
• Designed for surface-mount integration via SOIC-8 packaging

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Microprocessor supervisory circuits

Procurement Notes

Verify the specific suffix 'D' confirms the SOIC-8 package variant distinct from through-hole options. Confirm RoHS compliance status for the specific manufacturing lot. Ensure the ordering part number matches the required tolerance grade, as variations exist within the LM285 family. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component when a fixed 2.5 V reference is required in a surface-mount layout. Compare against adjustable variants if circuit flexibility is needed. Consider the ±1.5% initial accuracy for precision requirements. Evaluate thermal management needs given the small package size and potential power dissipation during operation.

Part Context

This device belongs to the LM285 series of micropower voltage references, which are widely used in industrial and consumer electronics. The series includes various output voltages and packages, offering designers flexibility in power management solutions. The LM285D-2-5 specifically addresses the need for a compact, fixed-voltage reference in space-constrained printed circuit board designs.

Replacement Considerations

• LM285D-2.5/NOPB