LM4120AIM5-3.3/NOPB

Voltage Reference Overview

The LM4120AIM5-3.3/NOPB is a precision micropower low dropout voltage reference from Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output voltage of 3.3 V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 2 V to 12 V and supports a maximum shunt current of 5 mA. It features a temperature coefficient of 50 ppm/°C and functions reliably across a temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Provides high-precision fixed voltage reference with tight initial accuracy tolerance
• Designed for micropower applications with low dropout capability
• Utilizes compact surface-mount packaging for space-constrained designs

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as specific variants may have limited availability. Ensure the ordering suffix matches the required package and temperature grade specifications before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with ±0.2% accuracy is required in a small footprint. Consider the 50 ppm/°C temperature coefficient for thermal stability needs. Verify that the 5 mA load current capability meets the circuit requirements and that the 2 V minimum input voltage aligns with the supply rail.

Voltage Reference Part Context

This part belongs to the LM4120 series of precision micropower voltage references. The series offers various fixed output voltages and accuracy grades, all sharing similar low-power characteristics and SOT-23 packaging options designed for portable and battery-operated electronic equipment.

Voltage Reference Replacement Considerations

Check for LM4120AIM5-3.3X-3.3/NOPB (tape and reel variant) if bulk packaging is preferred. Other LM4120 variants with different output voltages or accuracies are not electrically compatible substitutes.