LM285Z-2.5RP

Overview

The LM285Z-2.5RP is a micropower two-terminal bandgap voltage reference diode manufactured by onsemi, designed for precision shunt regulation applications. It provides a fixed nominal output voltage of 2.5 V with an initial accuracy tolerance of ±1.5%. The device operates within a wide current range from 20 μA to 30 mA, ensuring stable performance across varying load conditions. It features a temperature coefficient of 80 ppm/°C and functions reliably within an operating temperature range of -40°C to +85°C. Packaged in the SOIC-8 surface-mount format, this component integrates low dynamic impedance and low noise characteristics suitable for sensitive analog circuitry.

Feature Summary

• Micropower two-terminal bandgap voltage reference design
• Fixed 2.5 V nominal output with tight initial accuracy
• Wide operating current range for flexible biasing
• Low dynamic impedance and low noise performance

Applications

• Portable instrumentation circuits requiring extended battery life
• Analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage standards
• Sensor interface conditioning circuits

Procurement Notes

Verify the specific suffix RP against the official onsemi datasheet to confirm package type and tape-and-reel configuration. Ensure the order matches the required RoHS compliance status and lead time constraints. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and avoid counterfeit components. Confirm that the specified temperature grade aligns with the intended operational environment requirements.

Selection Notes

Select this component when a stable 2.5 V reference is needed in a compact surface-mount footprint. The SOIC-8 package facilitates automated assembly processes compared to through-hole alternatives. Consider the 80 ppm/°C temperature coefficient for applications requiring moderate thermal stability without active compensation. Evaluate the 20 μA minimum current requirement to ensure proper biasing in low-power designs.

Part Context

This device belongs to the LM285 series of micropower voltage references, which are widely used in industrial and consumer electronics. The series offers various voltage options and packaging styles to suit different design constraints. The LM285Z-2.5RP specifically targets applications demanding precise voltage regulation in space-constrained printed circuit board layouts while maintaining low power consumption profiles.

Replacement Considerations

Compatible substitutes include LM285D-2.5G and LM285D-2.5R2G from onsemi, which share similar electrical characteristics but may differ in packaging or reel specifications. Verify pinout compatibility and thermal performance before substitution.