LM4040C25QFTA

Overview

The LM4040C25QFTA is a precision micropower shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 2.5V with an initial tolerance of ±0.5% at +25°C. The device operates within a wide current range from 60µA to 15mA and maintains stability across an extended temperature range of -40°C to +125°C. It features a maximum temperature coefficient of 100 ppm/°C and low noise characteristics, typically 35µVRMS in the 10Hz to 10kHz bandwidth. Packaged in a compact SOT-23 surface mount format, it is designed for space-constrained applications.

Feature Summary

• Provides stable 2.5V reference voltage with ±0.5% initial accuracy
• Operates efficiently over a wide current range from 60µA to 15mA
• Maintains performance across industrial temperatures from -40°C to +125°C
• Designed for high stability with capacitive loads without external components

Applications

• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Data acquisition systems

Procurement Notes

Verify that the specific suffix 'Q' denotes automotive compliance or specific grade variations not explicitly detailed in the standard LM4040 datasheet provided. Confirm package type matches SOT-23 requirements. Ensure sourcing channels are authorized to guarantee component authenticity and adherence to RoHS and lead-free manufacturing standards specified by the manufacturer.

Selection Notes

Select this component when a fixed 2.5V reference with ±0.5% tolerance is required in a small SOT-23 footprint. It is suitable for designs needing operation down to 60µA current consumption. Consider the 100 ppm/°C temperature coefficient limit for thermal stability requirements. Verify if the Q-suffix variant meets specific automotive qualification standards beyond the standard industrial specifications.

Part Context

This part belongs to the LM4040 family of bandgap circuits offering various fixed voltages including 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V. The family includes B-grade (±0.2%), C-grade (±0.5%), and D-grade (±1%) tolerances. While SC70-5 variants are end-of-life, the SOT-23 package remains in full production, providing a pin-compatible alternative for space-saving designs.

Replacement Considerations

Standard replacements include LM4040C25FTA for general industrial use. For automotive applications requiring AEC-Q100 qualification, consult the separate LM4040Q datasheet.