Texas Instruments

LM4128BMFX-2.5

LM4128BMFX-2.5 Description

The LM4128BMFX-2.5 is a precision voltage reference IC designed by Texas Instruments, offering a fixed output voltage of 2.5V with a tolerance of ±0.2%. This device is part of the Power Management Integrated Circuit (PMIC) category and is housed in a Surface Mount SOT23-5 package, making it suitable for compact and high-density PCB designs. The LM4128BMFX-2.5 operates within an input voltage range of 2.9V to 5.5V and provides a stable output current of up to 20 mA while maintaining a low supply current of 100µA. The device features a temperature coefficient of 75ppm/°C, ensuring stable performance across a wide temperature range. Although the LM4128BMFX-2.5 is now considered obsolete, it remains a reliable choice for applications requiring a highly accurate and stable voltage reference.

LM4128BMFX-2.5 Features

• Fixed Output Voltage: Provides a stable 2.5V output with a tight tolerance of ±0.2%, ensuring precise voltage regulation.
• Low Supply Current: Consumes only 100µA of supply current, making it energy-efficient and suitable for low-power applications.
• Wide Input Voltage Range: Operates efficiently within an input voltage range of 2.9V to 5.5V, offering flexibility in power supply requirements.
• High Output Current Capability: Delivers up to 20 mA of output current, supporting a variety of load conditions.
• Low Temperature Coefficient: Features a temperature coefficient of 75ppm/°C, ensuring stable performance across varying temperatures.
• Surface Mount Packaging: Utilizes a compact SOT23-5 package, ideal for space-constrained designs and high-density PCB layouts.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for a wide range of manufacturing environments without additional moisture protection.
• Compliance and Status: Classified under ECCN EAR99 and HTSUS 8542.39.0001, and is REACH Unaffected, ensuring compliance with international regulations.

LM4128BMFX-2.5 Applications

The LM4128BMFX-2.5 is ideal for applications requiring a highly accurate and stable voltage reference. Its precision and low power consumption make it suitable for a variety of electronic systems, including:

• Analog-to-Digital Converters (ADCs): Provides a stable reference voltage for accurate signal conversion.
• Digital-to-Analog Converters (DACs): Ensures precise voltage levels for reliable analog signal generation.
• Power Management Circuits: Offers a stable reference for voltage regulation and monitoring.
• Battery Management Systems: Provides a stable reference for accurate voltage monitoring and control.
• Precision Measurement Equipment: Ensures accurate voltage levels for reliable measurements.

Conclusion of LM4128BMFX-2.5

The LM4128BMFX-2.5 is a versatile and reliable voltage reference IC designed for high-precision applications. Its fixed 2.5V output with a tight tolerance of ±0.2%, low supply current, and wide input voltage range make it an excellent choice for a variety of electronic systems. The device's low temperature coefficient and compact SOT23-5 package further enhance its suitability for space-constrained and high-precision applications. Despite its obsolete status, the LM4128BMFX-2.5 remains a valuable component for engineers seeking a stable and accurate voltage reference in their designs.