LM385BXZ-2.5/NOPB

Overview

The LM385BXZ-2.5/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, designed for precision applications requiring stable voltage regulation. It provides a fixed output voltage of 2.5 V with an initial accuracy of 1% and a low temperature coefficient of 20 ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and supports a maximum shunt current of 20 mA. Packaged in a compact SOT-23-3 surface-mount format, it ensures reliable performance across industrial environments while maintaining low power consumption characteristics suitable for battery-operated systems.

Feature Summary

• Provides a precise fixed 2.5 V reference output with high initial accuracy
• Features a low temperature coefficient for stable performance across wide thermal ranges
• Operates over an extended industrial temperature range from -40°C to +125°C
• Utilizes a compact SOT-23-3 package for efficient space-saving surface-mount integration

Applications

• Portable instrumentation circuits requiring stable voltage references
• Battery-powered measurement devices needing low quiescent current
• Data acquisition systems utilizing analog-to-digital conversion
• Industrial control loops requiring precise sensor excitation voltages

Procurement Notes

Verify the complete part number including the suffix /NOPB to ensure RoHS compliance and lead-free manufacturing status. Confirm the specific package variant matches the design footprint requirements. Check for any recent product change notifications or lifecycle status updates directly from Texas Instruments documentation before finalizing procurement plans.

Selection Notes

Select this component when a fixed 2.5 V reference is required with tight tolerance specifications. The 1% initial accuracy and 20 ppm/°C temperature coefficient make it suitable for high-precision applications. Ensure the operating environment falls within the specified -40°C to +125°C range. Consider the SOT-23-3 package constraints regarding thermal dissipation and board space availability during layout planning.

Part Context

This device belongs to the LM385 family of micropower shunt voltage references, which are widely used in analog signal processing and power management applications. The LM385 series offers various fixed voltage options and accuracy grades, providing designers with flexible solutions for different precision requirements. The BXZ variant specifically denotes the 2.5 V output with 1% accuracy in a small outline transistor package.

Replacement Considerations

Direct replacements include other LM385 variants with matching voltage and accuracy, such as LM385BXZ-1.2/NOPB for different reference levels. Cross-brand equivalents may require verification of pinout compatibility and thermal characteristics. Always consult official substitution guides to ensure functional equivalence.