LM385BYZ-2.5

Overview

The LM385BYZ-2.5 is a micropower shunt precision voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed 2.5 V output with an initial accuracy of 3%. The device operates within a temperature range of 0°C to +70°C and features a maximum shunt current of 20 mA and a minimum operating current of 20 µA. It utilizes a TO-92-3 through-hole package.

Feature Summary

• Micropower operation suitable for battery-powered applications
• Shunt precision reference design with low dynamic impedance
• Bipolar bandgap technology for stable performance

Applications

• Portable instrumentation
• Battery-powered systems
• Current loop instruments

Procurement Notes

Verify the manufacturer designation carefully, as the component was originally produced by National Semiconductor before its acquisition by Texas Instruments. Ensure the suffix 'NOPB' is present if lead-free compliance is required. Confirm the specific accuracy grade (B) matches the circuit tolerance requirements.

Selection Notes

Select this component when a fixed 2.5 V reference is needed in a through-hole TO-92 package. It is appropriate for commercial-grade environments (0°C to +70°C). Consider higher accuracy grades or industrial temperature ranges if the application demands tighter tolerances or wider thermal stability.

Part Context

This part belongs to the LMx85 series of micropower voltage references. These devices are widely used as reference sources in analog circuits due to their low cost and small size. The LM385 variant specifically targets commercial applications with standard accuracy specifications compared to military or industrial grades.

Replacement Considerations

• LM385BYZ-2.5/NOPB