LM4120IM5X-3.0

Voltage Reference Overview

The LM4120IM5X-3.0 is a precision micropower low dropout voltage reference manufactured by Texas Instruments, featuring a fixed 3.0 V output in an SOT-23 package. It offers an initial accuracy of 0.5% and a temperature coefficient of 50 PPM/°C across the -40°C to +85°C operating range. The device supports a maximum input voltage of 14 V and provides up to 5 mA of shunt current with a quiescent current of approximately 175 µA.

Voltage Reference Feature Summary

• Precision series voltage reference design ensuring stable output under varying load conditions
• Micropower operation capability suitable for battery-powered applications
• Low dropout performance allowing efficient regulation with minimal input-output 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 component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notices as availability may be restricted. Ensure packaging specifications match system requirements before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 3.0 V reference with 0.5% accuracy is required in a compact SOT-23 footprint. Consider the 50 PPM/°C temperature coefficient for thermal stability needs. Evaluate input voltage headroom against the 14 V maximum limit and ensure current demands stay within the 5 mA shunt capability.

Voltage Reference Part Context

Part of the LM4120 family of precision micropower voltage references from Texas Instruments. This series includes various fixed output voltages and accuracy grades, all sharing similar low-power characteristics and SOT-23 packaging options for space-constrained designs.

Voltage Reference Replacement Considerations

Check for LM4120AIM5X-3.0 for higher accuracy (0.2%) variants. Verify pinout compatibility with existing PCB layouts when substituting.