LM4120IM5-5.0/NOPB

Voltage Reference Overview

The LM4120IM5-5.0/NOPB is a precision micropower low dropout voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 5 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. It features a temperature coefficient of 50 ppm/°C and functions reliably across a temperature range of -40 °C to +85 °C. The component utilizes a SOT-23 package with five pins, designed for surface mount installation.

Voltage Reference Feature Summary

• Precision micropower series voltage reference architecture
• Low dropout operation capability
• Fixed output voltage configuration
• Surface mount SOT-23 packaging

Voltage Reference Applications

• Portable instrumentation systems
• Battery-powered measurement devices
• Data acquisition circuits
• Microprocessor supply monitoring

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS status during procurement. Confirm the package designation matches the required SOT-23 footprint for PCB layout compatibility. Ensure the operating temperature range meets the environmental requirements of the target application. Validate that the 5 mA maximum shunt current is sufficient for the circuit design load conditions.

Voltage Reference Selection Notes

Select this component when a stable 5 V reference is required in space-constrained designs. The SOT-23-5 package offers a compact solution compared to larger through-hole alternatives. Consider the 0.5% initial accuracy and 50 ppm/°C temperature coefficient for precision requirements. Evaluate the micropower consumption against battery life constraints in portable applications.

Voltage Reference Part Context

This part belongs to the LM4120 family of precision voltage references from Texas Instruments. The family includes various fixed output voltages and accuracy grades. The 'I' grade typically denotes industrial temperature range performance. The 'M5' suffix specifies the SOT-23-5 physical package type used for surface mounting.

Voltage Reference Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical specifications before considering alternative manufacturers or different series components.