Texas Instruments

LM4128CMFX-1.8

LM4128CMFX-1.8 Description

The LM4128CMFX-1.8 is a precision voltage reference IC designed by Texas Instruments, offering a fixed output voltage of 1.8V with a tolerance of ±0.5%. This device is part of the Power Management (PMIC) category and is housed in a compact SOT23-5 package, making it suitable for surface mount applications. The LM4128CMFX-1.8 is designed to operate within an input voltage range of 2.2V to 5.5V, ensuring stable 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, ensuring minimal drift over temperature variations.

LM4128CMFX-1.8 Features

• Fixed Output Voltage: The LM4128CMFX-1.8 provides a stable 1.8V output voltage, making it suitable for applications requiring precise voltage references.
• Low Tolerance: With a tolerance of ±0.5%, this IC ensures high accuracy in voltage reference applications.
• Low Supply Current: Consuming only 100µA, the LM4128CMFX-1.8 is well-suited for battery-operated and low-power systems.
• Wide Input Voltage Range: Operating from 2.2V to 5.5V, this IC can be used in a variety of power supply environments.
• Low Temperature Coefficient: The 100ppm/°C temperature coefficient ensures minimal voltage drift over temperature changes, enhancing the reliability of the voltage reference.
• Surface Mount Packaging: The SOT23-5 package allows for easy integration into compact and space-constrained designs.
• Series Reference Type: The series reference type ensures a stable output voltage by regulating the input voltage to the desired level.
• Obsolete Status: While the LM4128CMFX-1.8 is marked as obsolete, it remains a reliable choice for legacy systems and applications where its specific features are required.

LM4128CMFX-1.8 Applications

The LM4128CMFX-1.8 is ideal for a range of applications where a precise and stable voltage reference is required. Some specific use cases include:

• Analog-to-Digital Converters (ADCs): Providing a stable reference voltage for ADCs to ensure accurate conversions.
• Digital-to-Analog Converters (DACs): Ensuring precise output levels in DAC applications.
• Power Management Systems: Serving as a reference voltage in power management circuits to maintain stable operation.
• Battery Management Systems: Offering a stable reference for voltage monitoring and control in battery-operated devices.
• Precision Measurement Equipment: Enhancing the accuracy of measurement devices by providing a reliable voltage reference.

Conclusion of LM4128CMFX-1.8

The LM4128CMFX-1.8 from Texas Instruments is a robust and precise voltage reference IC, offering a stable 1.8V output with a low tolerance of ±0.5%. Its low supply current and wide input voltage range make it suitable for a variety of low-power and battery-operated applications. The low temperature coefficient ensures minimal drift, enhancing the reliability of the voltage reference over varying temperatures. Despite its obsolete status, the LM4128CMFX-1.8 remains a valuable component for legacy systems and applications requiring its specific features. Its compact SOT23-5 package and surface mount compatibility make it easy to integrate into modern designs, ensuring continued relevance in the electronics industry.