LM4132BMF-3.3/NOPB

Voltage Reference Overview

The LM4132BMF-3.3/NOPB is a precision series voltage reference manufactured by Texas Instruments, housed in an SOT-23-5 surface-mount package. It provides a fixed output voltage of 3.3 V with an initial accuracy of 0.1%. The device features a temperature coefficient of 20 ppm/°C and supports a maximum input voltage of 6 V. It operates within a junction temperature range of -40°C to +125°C and draws a typical supply current of 60 µA. The maximum shunt current is rated at 20 mA.

Voltage Reference Feature Summary

• Provides high-precision fixed voltage output with tight initial accuracy tolerance
• Features low temperature drift characteristics for stable performance across wide thermal ranges
• Incorporates a shutdown enable function to minimize power consumption during inactive periods

Voltage Reference Applications

• Portable instrumentation requiring low quiescent current
• Battery-powered measurement systems
• Data acquisition systems needing precise analog references
• Medical equipment requiring stable voltage sources

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as NOPB and packaging options like MF or MFX when ordering. Confirm RoHS compliance status and specific accuracy grades (e.g., B grade for 0.1%) against project requirements. Ensure the selected variant matches the required output voltage and package type for PCB layout compatibility.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with 0.1% initial accuracy is required in a compact SOT-23-5 footprint. Consider the 20 ppm/°C temperature coefficient for applications demanding stability over temperature variations. Evaluate the 60 µA supply current for battery life constraints and ensure the 20 mA shunt current capability meets load requirements.

Voltage Reference Part Context

This device belongs to the LM4132 family of micropower precision shunt voltage references designed for space-constrained applications. It serves as a drop-in replacement for older National Semiconductor parts and offers improved performance metrics compared to standard zener diodes. The family includes various output voltages and accuracy grades to suit diverse design needs.

Voltage Reference Replacement Considerations

LM4132BMF-3.3/NOPB is functionally equivalent to LM4132BMF-3.3 without the NOPB suffix, assuming identical specifications. Verify pinout compatibility and thermal characteristics when substituting with other SOT-23-5 voltage references from different manufacturers.