LM4132CMF-3.3/NOPB

Voltage Reference Overview

The LM4132CMF-3.3/NOPB is a precision series voltage reference manufactured by Texas Instruments, housed in a compact SOT-23-5 surface-mount package. It provides a fixed nominal output voltage of 3.3 V with an initial accuracy of ±0.2%. The device operates within a supply voltage range up to 6 V and supports a maximum shunt current of 20 mA. Key electrical characteristics include a temperature coefficient of 30 ppm/°C and a low operating supply current of 60 µA. It functions reliably across an extended industrial temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Integrated shutdown enable functionality for power management
• Low noise precision series voltage reference design
• Compact SOT-23-5 footprint for space-constrained applications

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable reference voltages
• Precision analog-to-digital converter (ADC) references

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's latest documentation. Confirm the 'CMF' designation corresponds to the required ±0.2% initial accuracy grade rather than other tolerance variants within the LM4132 family. Ensure the ordering part number matches the exact output voltage and package type required for the target PCB layout.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with ±0.2% accuracy is required in a small SOT-23-5 package. It is suitable for designs needing low quiescent current and high thermal stability over wide temperature ranges. Consider the 20 mA maximum load current capability against the circuit's demand. Verify that the input voltage remains within the specified operational limits relative to the output voltage.

Voltage Reference Part Context

This part belongs to the LM4132 family of micropower shunt voltage references. The family offers various fixed output voltages and accuracy grades, all sharing similar low-power characteristics and shutdown capabilities. The LM4132 series is designed to replace larger, higher-power zener-based references in modern low-voltage electronics.

Voltage Reference Replacement Considerations

Direct pin-compatible substitutes within the same package and voltage may include other LM4132 variants with different accuracy grades or output voltages, provided the electrical specifications meet the circuit requirements. Cross-reference with the manufacturer's official substitution guide for verified alternatives.