LM285M/NOPB

Overview

The LM285M/NOPB is an adjustable micropower shunt voltage reference manufactured by Texas Instruments. It operates within a supply voltage range of 1.24 V to 5.3 V and provides an initial accuracy of 2%. The device features a temperature coefficient of 150 PPM/C and supports a maximum shunt current of 20 mA with a minimum operating current of 10 uA. Designed for surface-mount applications, it is housed in an SOIC-8 package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Adjustable output voltage capability via external resistor network
• Micropower operation suitable for battery-powered systems
• Shunt regulation topology for stable reference generation

Applications

• Portable instrumentation requiring low power consumption
• Battery-operated measurement devices
• Data acquisition systems needing precise voltage references

Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance and RoHS adherence as per Texas Instruments documentation. Confirm the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the design accommodates the 2% initial accuracy and 150 PPM/C temperature coefficient for your application's precision needs. Check official datasheets for thermal dissipation limits under maximum shunt current conditions.

Selection Notes

Select this component when an adjustable voltage reference is required in a compact surface-mount format. It is appropriate for designs prioritizing low quiescent current over ultra-high precision. Consider the 2% initial tolerance and 150 PPM/C drift when determining if external calibration or tighter tolerance variants are necessary for the target system performance.

Part Context

This part belongs to the LM285 series of micropower voltage references from Texas Instruments. It serves as a cost-effective solution for general-purpose voltage referencing tasks where moderate accuracy suffices. The SOIC-8 packaging facilitates automated assembly in modern electronics manufacturing processes.

Replacement Considerations

LM285MX/NOPB is a documented variant within the same family offering similar electrical characteristics in the same package.