LM4125IM5-2.0/NOPB

Voltage Reference Overview

The LM4125IM5-2.0/NOPB is a precision micropower low-dropout series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.0 V with an initial accuracy of 0.2% and a temperature coefficient of 50 ppm/°C. The device operates within a supply voltage range of 2.7 V to 36 V and draws a typical quiescent current of 80 µA. It is housed in a compact SOT-23-5 surface-mount package, suitable for space-constrained designs requiring stable voltage regulation.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption
• High precision with 0.2% initial accuracy
• Low dropout voltage capability for efficient regulation
• Compact SOT-23-5 surface-mount packaging

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Microcontroller power supply monitoring

Voltage Reference Procurement Notes

This component is officially designated as End-of-Life (EOL) by Texas Instruments and is no longer in production. Procurement should focus on identifying verified replacement parts or alternative sources if existing stock is required. Verify the authenticity of any available units through authorized distributors to ensure reliability and compliance with original specifications.

Voltage Reference Selection Notes

Select this part only if legacy compatibility is mandatory due to its obsolete status. For new designs, consider modern equivalents that offer improved availability and potentially enhanced performance metrics. Ensure the selected substitute matches the 2.0 V output requirement and SOT-23-5 footprint to maintain board integrity without redesign.

Voltage Reference Part Context

The LM4125 series represents Texas Instruments' line of precision micropower voltage references designed for applications where power efficiency and accuracy are critical. This specific model, LM4125IM5-2.0/NOPB, is a discontinued variant within that family, historically used in portable electronics and industrial controls before being phased out in favor of newer generations.

Voltage Reference Replacement Considerations

The REF35205QDBVR is listed as a manufacturer-recommended substitute. Verify electrical compatibility, particularly the 2.0 V output and pin configuration, before transitioning to this alternative part number.