Texas Instruments

LM4128DMFX-2.0

LM4128DMFX-2.0 Description

The LM4128DMFX-2.0 is a precision voltage reference IC designed by Texas Instruments, offering a fixed output voltage of 2.048V with a tolerance of ±1%. This device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Surface Mount SOT23-5 package, making it suitable for compact and high-density PCB designs. The LM4128DMFX-2.0 operates within an input voltage range of 2.448V to 5.5V, ensuring reliable performance across a variety of power supply conditions. It features a low supply current of 100µA, which is ideal for low-power applications, and a temperature coefficient of 100ppm/°C, providing stable performance over a wide temperature range. The device is available in a Tape & Reel (TR) packaging format, facilitating automated assembly processes. Despite its obsolescence status, the LM4128DMFX-2.0 remains a robust solution for applications requiring a stable and precise voltage reference.

LM4128DMFX-2.0 Features

• Fixed Output Voltage: The LM4128DMFX-2.0 provides a stable output voltage of 2.048V, making it suitable for applications requiring a precise reference voltage.
• Low Tolerance: With a tolerance of ±1%, this IC ensures high accuracy in voltage regulation, which is critical for sensitive analog circuits.
• Low Supply Current: Consuming only 100µA of supply current, the LM4128DMFX-2.0 is ideal for battery-powered and low-power consumption applications.
• Wide Input Voltage Range: The device operates within an input voltage range of 2.448V to 5.5V, providing flexibility in power supply options.
• Low Temperature Coefficient: The 100ppm/°C temperature coefficient ensures minimal drift in output voltage over temperature variations, enhancing reliability in diverse environmental conditions.
• Surface Mount Packaging: The SOT23-5 package allows for easy integration into compact PCB designs, supporting high-density and space-constrained applications.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the LM4128DMFX-2.0 is suitable for a wide range of manufacturing environments without the need for special handling procedures.

LM4128DMFX-2.0 Applications

The LM4128DMFX-2.0 is well-suited for a variety of applications that demand a stable and precise voltage reference. Some specific use cases include:

• Analog-to-Digital Converters (ADCs): Providing a stable reference voltage for ADCs ensures accurate and reliable data conversion.
• Digital-to-Analog Converters (DACs): Ensuring precise output levels in DACs for applications such as audio processing and signal generation.
• Power Management Circuits: Serving as a reference voltage in power management systems to maintain consistent performance.
• Battery Management Systems: Offering a reliable reference for voltage monitoring and control in battery-powered devices.
• Precision Measurement Equipment: Enhancing the accuracy of measurement devices by providing a stable reference voltage.

Conclusion of LM4128DMFX-2.0

The LM4128DMFX-2.0 from Texas Instruments is a high-performance voltage reference IC designed for applications requiring precision and stability. Its fixed output voltage of 2.048V, low tolerance of ±1%, and low supply current of 100µA make it an excellent choice for low-power and high-accuracy applications. The wide input voltage range and low temperature coefficient further enhance its versatility and reliability. Despite being marked as obsolete, the LM4128DMFX-2.0 remains a valuable component for designers seeking a compact, efficient, and precise voltage reference solution.