LM4120AIM5-2.5/NOPB

Voltage Reference Overview

The LM4120AIM5-2.5/NOPB is a precision micropower low dropout voltage reference from Texas Instruments, housed in a five-pin SOT-23 package. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 2V to 12V and supports a maximum shunt current of 5mA. It features a temperature coefficient of 50ppm/°C and draws a supply current of 275µA. The component functions reliably across a temperature range of -40°C to +85°C.

Voltage Reference Feature Summary

• Provides stable reference voltage with high initial accuracy
• Operates as a low dropout series regulator for efficient power usage
• Designed for micropower applications with minimal quiescent current consumption

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise analog references
• Microcontroller peripheral voltage regulation

Voltage Reference Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance and RoHS status. Confirm the AIM5 designation matches the required industrial temperature grade and accuracy class. Ensure the SOT-23-5 footprint aligns with the target PCB layout. Check current production status as variants may be discontinued or subject to last-time buys.

Voltage Reference Selection Notes

Select this component when a fixed 2.5V reference is needed with tight tolerance requirements. Compare against other LM4120 variants if different output voltages or accuracy grades are acceptable. Consider the 275µA supply current against stricter low-power alternatives if battery life is critical. Verify input voltage headroom meets the minimum dropout requirements for the specific application rail.

Voltage Reference Part Context

This part belongs to the LM4120 family of precision micropower voltage references. The family offers various fixed output voltages and accuracy grades. The AIM5 variant specifically denotes the industrial temperature range and ±0.2% initial accuracy. The SOT-23-5 package allows for compact surface-mount designs in space-constrained electronics.

Voltage Reference Replacement Considerations

LM4120AIM5-2.5/NOPB is functionally equivalent to LM4120AIM5-2.5. Other LM4120 variants with different output voltages share the same pinout but require verification of electrical parameters.