ISL9104AIRUDZ-T7A

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The ISL9104AIRUDZ-T7A is a high-performance high-current buck switching regulator controller that offers up to 4.5A output current with cycle-by-cycle current limit. It integrates all the necessary power MOSFETs, along with an adjustable Vitex™ high-FET gate driver, a 20mΩ/2.5mΩ high-side low-side MOSFET pair and a high-accuracy on-chip power sense resistor.This device\'s switching frequency oscillates at 1MHz and can be set via a single external resistor. It is specifically designed to minimize EMI. It also features switching cycle-by-cycle current limit, over temperature protection, under voltage lockout, and a wide 7V to 50V operating range. The ISL9104AIRUDZ-T7A serves a variety of applications, including high-speed voltage rails, PoE, industrial and consumer power applications.

The ISL9104AIRUDZ-T7A uses a simple current-mode control architecture to maintain high output voltage accuracy over line and temperature variations. The on-board over-temperature protection prevents the device from damage due to thermal runaway, thus improving its total safety. Likewise, the under-voltage lockout feature prevents the device from start-up or operation below a certain voltage. It also utilizes spread spectrum clock modulation to minimize peak noise voltage and EMI.

In order to use this product, the user must supply a suitable gate driver circuit, along with a voltage divider network that sets the required output voltage. After setting the output voltage, the user must ensure that the PVDD voltage is greater than the internal threshold, thus allowing the device to start. Once the device has started, the voltage across the external power-sense resistor is monitored to allow an internal current-mode control loop to regulate the output voltage. The ISL9104AIRUDZ-T7A then uses an internal oscillator to generate a pulse-width modulation (PWM) control signal.

Once the PWM control signal is generated, it is further modulated by the Vitex high-FET drivers, allowing the power MOSFETs to switch on and off at a switching frequency determined by the user. During this process, the power MOSFETs will receive current from the source, allowing them to regulate the voltage and current, thus ensuring stability and reliability of the power system. The ISL9104AIRUDZ-T7A also contains an advanced overload protection that ensures that the power-supply does not overload even under extreme conditions.

The ISL9104AIRUDZ-T7A is ideal for a variety of power-management applications due to its high-efficiency, low noise operation and its Space-saving design. It was specifically designed to reduce electromagnetic interference (EMI) while delivering excellent performance in a variety of applications, such as high-speed voltage rails, PoE, industrial and consumer power applications. This device is also designed to meet the requirements of a wide range of voltage and current requirements. Additionally, its adjustable switching frequency allows the user to customize the device to meet their specific application. Thanks to all of these features, the ISL9104AIRUDZ-T7A is a ideal solution for a variety of power-management applications.

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