The INA139NA/250G4 is a high-side current sense monitor designed by Texas Instruments, a leader in semiconductor solutions. This precision current sense amplifier is an integral component for power management and monitoring applications. It is designed to detect and convert small differential voltages into a readily measurable output voltage proportional to the current flowing across a shunt resistor.

Key Features

• High-Side Measurement: The INA139NA/250G4 allows for high-side current sensing, which means it can measure the current flowing to the load without interfering with the ground path of the system. This feature is crucial for accurate current monitoring and control in various applications.
• Wide Input Common-Mode Range: Capable of operating over a wide input common-mode range of 2.7V to 60V, the INA139NA/250G4 is versatile and can be used in systems with a broad range of supply voltages.
• Low Quiescent Current: The device is designed for power-sensitive applications, with a low quiescent current that minimizes power consumption when the system is in idle mode.
• High Accuracy: With a precision voltage reference and a carefully designed amplifier circuit, the INA139NA/250G4 provides accurate current measurement, which is essential for system diagnostics and protection.

Applications

The INA139NA/250G4 is suitable for a variety of applications, including:

• Battery chargers
• Power management systems
• Overcurrent protection circuits
• Automotive systems
• Portable devices

Technical Specifications

In summary, the INA139NA/250G4 from Texas Instruments is a reliable and precise solution for high-side current sensing needs across a wide range of applications. Its low power consumption and high accuracy make it an excellent choice for designers who require efficient and effective power monitoring in their systems.