LM4040D30FTA

Overview

The LM4040D30FTA is a precision micropower shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 3.0V with an initial accuracy tolerance of ±1% at +25°C. The device operates within a wide current range from 60µA to 15mA and maintains stability over an extended temperature range of -40°C to +125°C. It features a maximum average temperature coefficient of 150 ppm/°C at 1mA reverse current. The component is housed in a surface-mount SOT23 package.

Feature Summary

• Provides stable 3.0V reference voltage with ±1% initial accuracy
• Operates effectively across a wide current range from 60µA to 15mA
• Maintains performance over an extended industrial temperature range
• Designed for high capacitive load tolerance without external compensation

Applications

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

Procurement Notes

Verify the specific D-grade tolerance and 3.0V output requirement against circuit design specifications. Confirm that the SOT23 package dimensions align with the target PCB layout. Ensure operating conditions remain within the specified 60µA to 15mA current range to maintain guaranteed electrical characteristics. Check for any specific environmental compliance requirements relevant to the final assembly.

Selection Notes

Select this component when a fixed 3.0V reference with moderate precision is required in space-constrained designs. The SOT23 package offers a compact footprint suitable for portable applications. Consider the 1% tolerance if tighter accuracy grades like B or C are not necessary for the application's noise and stability requirements.

Part Context

This part belongs to the LM4040 family of bandgap circuits, which includes various voltage options and accuracy grades. The 'D' suffix indicates the 1% tolerance grade, while '30' specifies the 3.0V output. The 'FTA' suffix denotes the SOT23 package and tape-and-reel packaging format. This family is designed for low-power applications requiring stable references.

Replacement Considerations

LM4040B30FTA (0.2% tolerance), LM4040C30FTA (0.5% tolerance). These variants share identical pinouts and form factors but offer different accuracy levels.