ISL9003AIRUBZ-T

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The ISL9003AIRUBZ-T is a High-Side Linear Voltage Regulator from Intersil Corporation. It is a low power, cost-effective and highly reliable solution for automotive applications requiring a wide input voltage range and high current load. The ISL9003AIRUBZ-T is specifically designed to provide up to 2A of output voltage and is suitable for automotive battery powered applications.

In the world of linear voltage regulators, the ISL9003AIRUBZ-T stands out for its efficiency. Thanks to its low quiescent current, it can regulate the output voltage by as little as 80mV, or up to 45V depending on the input voltage. The device operates with a wide input voltage range of 4V to 45V, enabling it to supply multiple downstream devices with a regulated voltage. This makes it ideal for applications such as distributed power supply architectures and DC-DC converters.

The ISL9003AIRUBZ-T has a low dropout voltage of 200mV, and its low quiescent current of only 0.001A makes it suitable for battery powered applications. Additionally, it features circuit protection features such as foldback current limiting, output enable control and overtemperature shutdown. Additionally, the device includes an analog voltage monitor that can be used to monitor the output voltage and detect faults.

In terms of applications, the most common use for the ISL9003AIRUBZ-T is for automotive battery powered applications. It is used to regulate the voltage supplied to a variety of downstream devices, such as microcontrollers, sensors, and other regulated components. Additionally, it can be used in distributed power supplies and DC-DC converters.

The working principle of the ISL9003AIRUBZ-T is relatively simple. It employs a linear feedback control loop, where the output voltage is monitored with a small sample of current returned to the input. This current is then compared to the reference voltage, and the difference between the two is used to adjust the output voltage accordingly. This closed-loop control ensures that the output voltage remains within a specified range even when there is a voltage drop in the input voltage.

The ISL9003AIRUBZ-T is an efficient and reliable solution for automotive battery powered applications. Its wide input voltage range and highly accurate output voltage regulation make it an ideal choice for applications such as distributed power supply architectures and DC-DC converters. Furthermore, its protection features such as foldback current limiting, output enable control, and overtemperature shutdown make it even more suitable for safety critical applications.

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