MAX13036ATI+

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The MAX13036ATI+ is an integrated high-side current monitor designed for high efficiency, low-power applications. It incorporates both an operational amplifier and a low-power circuit that enable it to accurately measure the voltage drop across an external, high-side power transistor in the presence of an applied load current, while using very little power. This makes it ideal for use in battery powered mobile applications.

This device is useful in a wide range of applications, from medical equipment and automotive electronics to communications, industrial and consumer devices. It is especially well suited for use in battery charge and discharge applications where high current transistors are used and accurate current monitoring is required. It can also be used for monitoring power transistors, invertors and power regulators, as well as for measuring relative ground currents.

The MAX13036ATI+ Working Principle is based on the concept of "Average Transconductance". The basic operation of the device is to measure the voltage drop across a power transistor that is connected to a load current. The device measures the average transconductance of the transistor and uses this information to calculate the current. The architecture of the device is designed to achieve maximum accuracy and optimum power efficiency.

The device uses a low power-opamp on its input to measure the differential voltage across a high-side current sensing transistor. The opamp determines the potential difference between the non-inverting and inverting inputs and converts this to a voltage level which is then fed to the analog-to-digital converter (ADC) within the device. The ADC then converts the input into a corresponding digital output.

The device also contains an internal temperature compensation circuit that allows for accurate measurements regardless of the temperature. This temperature compensation is important for applications where temperature fluctuations are expected, as it ensures that the output signals remain stable throughout the operating temperature range of the device. Additionally, the device includes an EMI/RFI filter that helps to ensure accurate measurements even in applications that are subject to radio frequency interference.

The MAX13036ATI+ also features an integrated watchdog timer, which is triggered by a fault detected by the device and results in the device sending a reset signal. This allows the system to be held in a reset state until the fault is removed, ensuring the system remains in safe condition until the fault is cleared and allowing the system to be reset when the fault is detected. Additionally, the device can detect an excessive load current and shut down the power transistor to prevent damage.

The MAX13036ATI+ is a highly integrated, low power device designed to accurately monitor and measure the voltage drop across a high-side power transistor, while using very little power. It is an ideal solution for applications such as battery charge and discharge, motor control, automotive electronics and other applications that require high accuracy and low power consumption. The device includes an EMI/RFI filter, temperature compensation circuit, and integrated watchdog timer, making it an all-in-one solution for any application.

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