LM285D-2.5

Overview

The LM285D-2.5 is a micropower two-terminal bandgap voltage reference diode manufactured by onsemi, designed for precision applications requiring stable voltage regulation. It operates within a wide current range of 10 µA to 20 mA and features a fixed output voltage of 2.5 V with an initial accuracy of ±1.5%. The device exhibits a maximum temperature coefficient of 80 ppm/°C and supports a shunt current up to 30 mA. Packaged in an SOIC-8 surface-mount format, it functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Micropower two-terminal bandgap topology providing stable regulation over a wide dynamic current range
• Surface-mount SOIC-8 package design enabling efficient integration into compact printed circuit boards
• On-chip trimming ensures tight voltage tolerance and low dynamic impedance for high precision

Applications

• Analog-to-digital converter (ADC) reference sources
• Portable instrumentation power supplies
• Battery-operated regulator circuits

Procurement Notes

Verify component authenticity through authorized distribution channels due to the part's discontinued status. Confirm RoHS compliance requirements as specific listings indicate non-compliance. Validate that the SOIC-8 package matches the target PCB footprint and thermal management specifications before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 2.5V reference is required in space-constrained designs utilizing surface-mount technology. Ensure the application current remains within the specified 10 µA to 20 mA operational window to maintain optimal stability. Consider the 80 ppm/°C temperature coefficient against environmental conditions to verify if tighter drift specifications are necessary for the intended use case.

Part Context

This device belongs to the LM285/LM385 series of micropower voltage references, which utilize bandgap technology for long-term stability. The LM285D-2.5 specifically adapts this architecture for surface-mount assembly, offering a modern packaging alternative to traditional through-hole variants while maintaining the core electrical characteristics of the family.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.