ISL6248ACR-T

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ISL6248ACR-T is a DC DC switching controller that comes with several features that make it ideal for applications such as notebook/netbook power supplies, telecom supplies, computer/game console supplies and other industrial applications. It is an integrated solution for a high current, synchronous step-down DC to DC power supply.

The unique features of ISL6248ACR-T include an adjustable current- or voltage-mode pulse width modulation (PWM) operation; its high switching frequency, up to 1MHz; its operation in a wide input voltage range from 5V to 40V; its programmable soft-start; and its master/slave parallel operation. Additionally, it has a built-in start-up delay timer, dedicated enable and disable pins, ceramic capacitors for output ripple compensation, overvoltage/overcurrent protection, and programmable switching frequency synchronization.

The ISL6248ACR-T has several advantages over other voltage regulators/DC DC controllers in terms of its flexible configuration and operation. The adjustable PWM can be set to either current mode or voltage mode, depending on the application requirements. Moreover, the built-in soft-start feature allows for the output voltage to be gradually increased, reducing inrush current and system startup time. The device also integrates an overvoltage/overcurrent protection system that kicks in in case of overvoltage and/or overcurrent events in the power supply.

The working principle of the ISL6248ACR-T can be broken down into several simplified steps. The device takes a voltage input, in this case it is a DC voltage, and then uses an internal switch to alternately connect and disconnect the output. This process is called on/off modulation and is regulated by the PWM signal. The PWM signal is then used to control the ON/OFF cycle of the switch and regulate the output voltage. For this reason, the device is also known as a switched-mode power supply.

In addition to controlling the voltage, the ISL6248ACR-T also has the ability to control the current. This is done by varying the PWM pulse width, so that the output current is regulated. The current regulation mode is particularly useful for applications that require a precise output current, such as in a battery charger. In this case, the ISL6248ACR-T can be used to ensure that the current is maintained within a certain range, at all times.

In summary, the ISL6248ACR-T is a high current, synchronous step-down DC to DC switching controller that comes with an adjustable current or voltage mode PWM, an overvoltage/overcurrent protection system, and a built-in start-up delay timer. It is suitable for a variety of light load, high-power applications such as notebook/netbook power supplies, telecom supplies, computer/game console supplies, and other industrial applications.

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