LM4132DMF-2.5/NOPB

Voltage Reference Overview

The LM4132DMF-2.5/NOPB is a precision low dropout voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output of 2.5V with an initial accuracy of 0.2%. The device operates within an input voltage range of 2.7V to 6V and supports a maximum shunt current of 20mA. It features a temperature coefficient of 30ppm/°C and functions across a temperature range of -40°C to +125°C. Packaged in a compact SOT-23-5 form factor, it consumes approximately 60µA of supply current.

Voltage Reference Feature Summary

• Precision series voltage reference architecture ensuring stable output under varying load conditions
• Low dropout operation allowing efficient performance with minimal input-to-output voltage differential
• Integrated shutdown capability for reduced power consumption during inactive periods
• Compact surface-mount packaging suitable for space-constrained electronic designs

Voltage Reference Applications

• Portable battery-powered instrumentation requiring low quiescent current
• Data acquisition systems needing high-accuracy analog-to-digital converter references
• Industrial process control loops utilizing precision sensing elements
• Medical equipment requiring stable voltage sources for signal conditioning

Voltage Reference Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the suffix /NOPB indicates lead-free and RoHS compliance. Ensure the package code MF corresponds to the SOT-23-5 variant. Cross-reference the specific output voltage of 2.5V and the DM grade accuracy of 0.2% against the official datasheet to prevent substitution errors with similar LM4132 variants.

Voltage Reference Selection Notes

Select this component when a fixed 2.5V reference with 0.2% initial accuracy is required in a small footprint. It is suitable for applications demanding low noise and stability over a wide temperature range. Consider the 20mA maximum output current limit for load requirements. The SOT-23-5 package facilitates easy integration into dense PCB layouts compared to larger through-hole alternatives.

Voltage Reference Part Context

The LM4132 belongs to a family of micropower shunt voltage references designed for precision applications. Originally developed by National Semiconductor, production continues under Texas Instruments following their merger. The device utilizes bandgap technology to achieve low drift and high stability. It serves as a critical reference element in measurement systems where long-term reliability and precise voltage levels are mandatory.

Voltage Reference Replacement Considerations

LM4132DMF-2.5: Direct equivalent without environmental compliance suffix.

Voltage Reference FAQ

What is the maximum shunt current for the LM4132DMF-2.5/NOPB?

The maximum shunt current is 20mA.

Does the LM4132DMF-2.5/NOPB support shutdown mode?

Yes, the device includes a shutdown enable pin to reduce current consumption.