LM4120AIM5-3.0

Voltage Reference Overview

The LM4120AIM5-3.0 is a precision micropower low dropout voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 2V to 14V and supports a maximum shunt current of 5mA. It features a temperature coefficient of 50 ppm/°C and functions reliably across a temperature range of -40°C to +85°C. Packaged in a compact SOT-23-5 surface-mount format, it draws a supply current of 275µA.

Voltage Reference Feature Summary

• Precision micropower design for energy-efficient applications
• Low dropout operation with high line regulation
• Compact SOT-23-5 surface-mount package

Voltage Reference Applications

• Portable instrumentation systems
• Battery-powered measurement devices
• Data acquisition systems requiring stable reference voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates RoHS compliance when sourcing this component. Confirm the package type matches the required SOT-23-5 footprint for PCB layout compatibility. Check manufacturer documentation for any recent product change notices or end-of-life announcements that may affect long-term availability and supply chain stability.

Voltage Reference Selection Notes

Select this component when a fixed 3V reference with high initial accuracy is required. Ensure the application input voltage remains within the 2V to 14V operational window. Consider the 275µA quiescent current for battery life calculations. Verify thermal requirements against the specified -40°C to +85°C operating range for environmental suitability.

Voltage Reference Part Context

This part belongs to the LM4120 series of precision voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades. The AIM5 variant specifically denotes the automotive-grade or industrial-grade performance level within the SOT-23-5 package family, providing consistent reliability for demanding electronic designs.

Voltage Reference Replacement Considerations

Direct substitutes include other LM4120 variants with different output voltages such as LM4120AIM5-2.0/NOPB or LM4120IM5X-5.0, provided the voltage requirement changes. Cross-reference with similar series references like REF30 or TLA431 if pinout or form factor adjustments are acceptable.