ISL8105AIBZ-T

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The ISL8105AIBZ-T is a highly integrated non-synchronous Buck DC/DC switching controller from Renesas that operates from a single 2.5V to 5.5V input.

This controller integrates all of the features necessary to provide a simple, low cost and efficient single rail power supply solution. The ISL8105AIBZ-T features an external synchronization interface, adjustable frequency, output voltage undervoltage lockout and adjustable slew rate control to ensure optimum efficiency.

It has a high-efficiency, proprietary current-mode control architecture that allows for a wide switching frequency range with predictable bandwidth, full protection against overcurrent and short circuit conditions, and fast transient response.

The device is made up of an input voltage regulator and an emitter-coupled-logic (ECL) based control IC. The input voltage regulator is used to regulate the supply voltage and provide overvoltage protection. The ECL based control IC provides the pulse width modulation (PWM) control signal used to switch the power transistors with the required duty cycle to provide the desired output current.

The ISL8105AIBZ-T also features programmable over-current protection and optional external synchronization control. It also allows for the addition of an external undervoltage lockout protection to ensure safe power up and shutdown of the device. Additionally, the device features a slew rate control to prevent unwanted inrush current during startup.

The ISL8105AIBZ-T is ideal for powering microprocessors and DC-DC Converters, as well as other low power applications. It is extremely efficient and provides superior thermal performance. It is capable of delivering up to 10A of current and can be used with a wide variety of power supply architectures such as Buck, Buck-Boost, Flyback and SEPIC.

The ISL8105AIBZ-T allows for a complete range of power supply solutions, from simple single rail to more complex multi-rail architectures. These solutions enable designers to meet their cost and performance objectives while maintaining the required flexibility.

In summary, the ISL8105AIBZ-T is a highly integrated non-synchronous DC/DC switching controller from Renesas that operates from a single 2.5V to 5.5V input. It features an external synchronization interface, adjustable frequency, output voltage undervoltage lockout and adjustable slew rate control to ensure optimum efficiency. It is an ideal solution for microprocessor and DC-DC converter applications, with high efficiency and superior thermal performance.

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