XB385M3-2.5 Micropower Voltage Reference Diode

Overview

The XB385M3-2.5 from XINLUDA is a precision 2.5V Voltage Reference (Vref) designed for applications requiring stable and accurate voltage regulation. The LM385M3X-2.5/NOPB from Texas Instruments is a comparable voltage reference IC. While both devices offer 2.5V output, the XB385M3-2.5 has several advantages over the LM385M3X-2.5/NOPB, including improved accuracy, better temperature stability, and more efficient power consumption.

Voltage Accuracy

Voltage accuracy is crucial for applications that require precise and consistent voltage regulation.

• The XB385M3-2.5 has a voltage tolerance of ±0.5% at 25°C, ensuring highly accurate voltage regulation even under varying conditions.

• The LM385M3X-2.5/NOPB offers a voltage tolerance of ±1.0%, which results in a higher margin of error in its output voltage. This can lead to less reliable performance in systems where voltage accuracy is paramount.

The XB385M3-2.5 provides a more accurate voltage reference, making it ideal for high-precision applications such as data acquisition systems, precision measurement instruments, and sensitive sensor circuits.

Temperature Coefficient

The temperature coefficient reflects how much the output voltage changes with temperature, and it is an essential parameter in applications subject to temperature fluctuations.

• The XB385M3-2.5 features a temperature coefficient of 50ppm/°C, which ensures excellent performance across a wide temperature range.

• In contrast, the LM385M3X-2.5/NOPB has a temperature coefficient of 100ppm/°C, which is approximately double that of the XB385M3-2.5.

With its lower temperature coefficient, the XB385M3-2.5 excels in environments with significant temperature variation, making it more suitable for automotive, industrial, and aerospace applications where precise voltage regulation is critical despite changing temperatures.

Power Consumption

Power consumption is an essential factor in applications where energy efficiency is a priority, especially in battery-operated devices.

• The XB385M3-2.5 is designed with low quiescent current of 40μA, which minimizes power consumption and extends the lifespan of battery-powered devices.

• The LM385M3X-2.5/NOPB has a slightly higher quiescent current of 60μA, which leads to increased power consumption, reducing overall energy efficiency.

With its lower quiescent current, the XB385M3-2.5 is the ideal choice for low-power applications, including portable electronics, wearable devices, and remote sensing systems.

Load Regulation

Load regulation is the ability of a voltage reference to maintain a stable output voltage despite changes in the load current.

• The XB385M3-2.5 offers a load regulation of 0.1% over a broad range of load currents, which ensures that the output voltage remains stable even as the load changes.

• The LM385M3X-2.5/NOPB, while effective, provides a load regulation of 0.2%, which may result in slightly greater variations in the output voltage when the load current fluctuates.

The XB385M3-2.5’s superior load regulation provides more stable performance under varying load conditions, making it ideal for high-precision electronics and signal processing applications.

Package and Size

Both the XB385M3-2.5 and the LM385M3X-2.5/NOPB come in a SOT-23-3 package, making them compact and well-suited for space-constrained designs. However, the XB385M3-2.5 has been optimized for efficient thermal dissipation and a more compact footprint, which enhances its performance in high-density applications.

The optimized design of the XB385M3-2.5 ensures better thermal management, which is crucial in applications requiring consistent performance over extended periods, such as automotive electronics and industrial systems.

Application Suitability

The XB385M3-2.5 is well-suited for a wide variety of precision applications where low power consumption, high accuracy, and excellent temperature stability are essential. These applications include:

• High-precision measurement devices

• Portable electronics

• Medical devices

• Battery-powered systems

• Communication equipment

While the LM385M3X-2.5/NOPB can be used in these applications, the XB385M3-2.5 offers distinct advantages in terms of voltage accuracy, temperature stability, and energy efficiency, making it a better fit for modern, high-precision designs.

Conclusion

In conclusion, the XINLUDA XB385M3-2.5 offers several advantages over the LM385M3X-2.5/NOPB, including:

• Better voltage accuracy with a ±0.5% tolerance vs. ±1.0%

• Lower temperature coefficient (50ppm/°C vs. 100ppm/°C)

• Lower power consumption (40μA vs. 60μA quiescent current)

• Superior load regulation for improved performance under varying load conditions