LM4132EMF-3.3/NOPB

Voltage Reference Overview

The LM4132EMF-3.3/NOPB is a precision series voltage reference IC manufactured by Texas Instruments, housed in a compact SOT-23-5 surface-mount package. It provides a fixed output voltage of 3.3V with an initial accuracy of ±0.5%. The device operates within a supply voltage range of 2.375V to 6V and supports a maximum shunt current of 20mA. Key electrical characteristics include a temperature coefficient of 30ppm/°C and a typical operating supply current of 60µA. It features a shutdown enable function and is rated for operation across an extended temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Integrated shutdown enable pin for power management
• Low noise performance suitable for sensitive analog circuits
• Compact SOT-23-5 footprint for space-constrained designs

Voltage Reference Applications

• Portable instrumentation requiring low power consumption
• Data acquisition systems needing stable reference voltages
• Battery-powered devices utilizing precise voltage regulation

Voltage Reference Procurement Notes

Verify the specific suffix 'EMF' corresponds to the required tolerance and temperature grade. Confirm the 'NOPB' designation indicates lead-free and RoHS compliance. Ensure the ordering part number matches the exact output voltage and package type required for the design. Cross-reference with official Texas Instruments documentation to validate specifications before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 3.3V reference with ±0.5% initial accuracy is required. It is suitable for applications demanding low quiescent current and high stability over temperature. Consider the SOT-23-5 package constraints and thermal dissipation capabilities. Evaluate if the 20mA maximum shunt current meets the load requirements of the target circuit.

Voltage Reference Part Context

This component belongs to the LM4132 family of micropower series voltage references. The family offers various fixed output voltages and accuracy grades, including 0.05%, 0.1%, and 0.5% options. All variants share similar low-power characteristics and the same physical package, differing primarily in output voltage and initial accuracy specifications.

Voltage Reference Replacement Considerations

LM4132AMFX-3.3/NOPB: Offers higher initial accuracy (±0.05%) but may have different cost implications. LM4132BMFX-3.3/NOPB: Provides intermediate accuracy (±0.1%). Verify that any substitute maintains the same SOT-23-5 pinout and thermal characteristics.