LM4040BIM3-2.5/V+

Overview

The LM4040BIM3-2.5/V+ is a precision micropower shunt voltage reference manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a fixed reverse breakdown output voltage of 2.5 V with an initial accuracy tolerance of 0.2%. The device operates within an industrial temperature range from -40°C to +85°C and features a temperature coefficient of 100 PPM/°C. Designed for surface-mount applications, it utilizes a compact SOT-23-3 package. The component supports a minimum operating current of 60 µA and a maximum shunt current of 15 mA, ensuring stable performance across varying load conditions.

Feature Summary

• Bandgap reference architecture with temperature drift curvature correction for stable accuracy
• Low dynamic impedance ensures consistent reverse breakdown voltage stability
• Capacitive load tolerant design eliminates the need for external output capacitors

Applications

• Space-critical portable electronic devices requiring small form factors
• Battery-powered instrumentation systems utilizing micropower architectures
• Data acquisition systems requiring precise analog-to-digital conversion references
• Handheld meters and measurement equipment needing stable voltage baselines

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation, as variations may indicate distinct packaging or qualification standards. Confirm current availability status through authorized distribution channels, as supply constraints may affect lead times. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 2.5 V reference with 0.2% initial accuracy is required in a subminiature SOT-23-3 package. It is suitable for designs prioritizing low power consumption with a minimum operating current of 60 µA. Consider this part for industrial environments requiring operation between -40°C and +85°C with a 100 PPM/°C temperature coefficient.

Part Context

This component belongs to the LM4040 series of precision micropower shunt voltage references. The series is characterized by its bandgap reference technology and curvature correction, which maintains accuracy over wide temperature and current ranges. Manufactured originally by Maxim Integrated and now part of Analog Devices, these devices are widely used in applications demanding high stability in minimal physical space.

Replacement Considerations

LM4040AIM3-2.5/NOPB: Offers tighter initial accuracy (0.1%) but differs in temperature coefficient specifications.

FAQ

Does the LM4040BIM3-2.5/V+ require an external output capacitor?

No, the device is designed to be capacitive load tolerant and does not require an external output capacitor for stable operation.

What is the minimum operating current for this voltage reference?

The minimum operating current is 60 µA, allowing for efficient operation in low-power battery-driven applications.