LM4120IM5-3.3/NOPB

Voltage Reference Overview

The LM4120IM5-3.3/NOPB is a precision micropower low dropout voltage reference manufactured by Texas Instruments, housed in a five-pin SOT-23 package. It provides a fixed nominal output voltage of 3.3 V with an initial accuracy of ±0.5%. The device operates within an input voltage range of 2 V to 12 V and supports a maximum shunt current of 5 mA. Key electrical characteristics include a temperature coefficient of 50 ppm/°C and a supply current of approximately 275 µA. The component functions reliably across a specified operating temperature range from -40 °C to +85 °C.

Voltage Reference Feature Summary

• Precision series voltage reference architecture ensuring stable output under varying load conditions
• Micropower design optimized for battery-powered applications through low quiescent current consumption
• Low dropout operation allowing efficient regulation with minimal input-to-output voltage differential

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages
• Battery-operated measurement systems
• Data acquisition systems needing precise analog references

Voltage Reference Procurement Notes

Verify the specific suffix NOPB indicates lead-free and RoHS compliance status according to the manufacturer's latest documentation. Confirm the IM5 variant matches the required industrial temperature grade and packaging format for your assembly process. Cross-reference the datasheet revision to ensure all electrical parameters align with your design specifications before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference is required with moderate precision and low power consumption. Ensure the input voltage remains within the 2 V to 12 V operational window. Consider the ±0.5% initial accuracy and 50 ppm/°C temperature coefficient against your system's tolerance requirements. Verify that the SOT-23-5 package fits your PCB layout constraints.

Voltage Reference Part Context

This part belongs to the LM4120 family of precision micropower low dropout voltage references. The family offers various fixed output voltages and accuracy grades, including AIM5 variants with tighter tolerances. The LM4120 series is designed for applications demanding high stability and low noise in a compact surface-mount package.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.