LM285BXM-1.2

Overview

The LM285BXM-1.2/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, housed in an 8-pin SOIC package. It provides a fixed output voltage of 1.235 V with an initial accuracy of 1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. Maximum shunt current is rated at 20 mA.

Feature Summary

• Provides stable micropower voltage regulation suitable for precision applications
• Offers high initial accuracy for reliable circuit performance
• Designed for surface-mount integration via standard SOIC packaging

Applications

• Precision analog-to-digital converter reference sources
• Battery-powered instrumentation circuits
• Portable measurement equipment power supplies

Procurement Notes

Verify the complete part number including the NOPB suffix to confirm lead-free compliance and specific manufacturing lot details. Ensure the SOIC-8 package variant matches your PCB footprint requirements. Confirm the B-grade accuracy specification aligns with your design tolerance needs before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.235 V reference is required with tight initial accuracy tolerances. The wide industrial temperature range supports operation in harsh environments. Consider the maximum shunt current limit when designing biasing networks to ensure stable regulation under varying load conditions.

Part Context

This device belongs to the LM285 series of micropower voltage references. It serves as a surface-mount alternative to through-hole variants like the LM285BYZ. The B-grade designation indicates tighter initial accuracy compared to standard grade devices, making it suitable for higher precision requirements within the same family.

Replacement Considerations

LM285BIMX-1.2/NOPB offers extended temperature range capabilities. LM385BXM-1.2/NOPB provides similar functionality but with lower initial accuracy specifications.