ISL85003FRZ-T7A

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The ISL85003FRZ-T7A is a non-isolated synchronous buck switching regulator. This specific regulator is capable of providing a high level of integration, efficiency and accuracy in low-cost, space-saving 8-lead packages. The ISL85003FRZ-T7A is designed for a wide range of applications, including power supplies for wireless LANs, home appliances, set-top boxes, and other portable devices where high efficiency and a small solution size is required.

The ISL85003FRZ-T7A is designed to operate in a wide range of input voltages, from 2.25V to 13.2V. It also supports a wide range of output voltages from 0.8V to 5.5V. This device offers a maximum output current of up to 6A and a switching frequency up to 4MHz. Additionally, the device features a light load efficiency of up to 95%.

The ISL85003FRZ-T7A features a high level of integration, including internal N-channel MOSFET switches, gate drivers, over-current protection, thermal protection and under-voltage protection. This device also supports an external compensation capacitor, enabling users to optimize performance as per their application requirements. Additionally, it features an integrated power on/off reset logic which turns the device on/off depending on the voltage of the output capacitor. The device also offers a soft-start time from 2.5us to 1ms, allowing it to settle the output voltage over time to reduce input inrush current.

The working principle of the ISL85003FRZ-T7A is relatively simple. First, the device takes in an input voltage, typically DC. The device then reduces the voltage across two MOSFETs which are connected in series, the Vcc input is connected to the drain of the first MOSFET and the output (Vout) is connected to the source of the second MOSFET. The gate of the first MOSFET is connected to the gate of the second MOSFET through a driver which is controlled by a PWM controller. Thus, when the PWM controller is activated, it turns the MOSFETs on and off in order to control the output voltage. Finally, an external compensation capacitor is used to control the output voltage. This enables the device to maintain a constant voltage output, even when subjected to changes in the input voltage.

The ISL85003FRZ-T7A is well suited for a variety of applications, including home appliances, set-top boxes, wireless LANs and other portable devices. This device has been designed to provide a high level of integration, efficiency and accuracy in small packages. It also features an external compensation capacitor, allowing users to optimize performance as per their application requirements. Furthermore, it provides a high level of output current, with an efficiency of up to 95%. This makes the ISL85003FRZ-T7A an ideal choice for power supplies in a variety of applications.

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