LM385M3-2.5

Overview

The LM385M3-2.5 is a micropower shunt voltage reference diode manufactured by Texas Instruments, designed for applications requiring stable voltage regulation with minimal power consumption. It provides a fixed output voltage of 2.5V with an initial accuracy tolerance of ±3%. The device operates within a commercial temperature range of 0°C to +70°C and features a temperature coefficient of 150ppm/°C. It supports a maximum cathode current of 20mA and requires a minimum operating current of 20µA. The component is housed in a compact SOT-23 surface-mount package, facilitating integration into space-constrained circuit designs.

Feature Summary

• Micropower operation suitable for battery-powered systems
• Fixed 2.5V output voltage for precision referencing
• Compact SOT-23 surface-mount packaging

Applications

• Battery-powered instrumentation circuits
• Portable measurement devices
• Microprocessor supply monitoring

Procurement Notes

Verify the specific suffix 'M3' against the manufacturer's official datasheet to confirm pinout compatibility and exact electrical specifications. Ensure the sourcing channel provides genuine components with traceable documentation. Confirm RoHS compliance status as indicated by the 'NOPB' designation if applicable to your regulatory requirements. Validate that the supplier offers valid quality assurance certificates for electronic components.

Selection Notes

Select this component when a low-cost, fixed 2.5V reference is required in a small footprint. It is appropriate for general-purpose analog circuits where high precision is not critical. Consider the 150ppm/°C temperature coefficient for thermal stability requirements. Compare against adjustable variants if flexible voltage settings are needed instead of a fixed output.

Part Context

This part belongs to the LM385 family of micropower voltage references from Texas Instruments. The family includes variants with different output voltages (1.2V, 2.5V) and temperature grades (LM185, LM285). The 'M3' suffix typically denotes a specific tape-and-reel packaging configuration or manufacturing lot code variant within the standard SOT-23 form factor.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in the provided source material.