ISL91133IINZ-T

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The ISL91133IINZ-T belongs to PMIC - Voltage Regulators - DC DC Switching Regulators. It enables voltage step-up/down through a switching regulator topology. The ISL91133IINZ-T contains a high-efficiency, high-current, non-synchronous buck regulator, and a low-dropout linear regulator for applications requiring guaranteed minimum output voltage (VOUT).

The ISL91133IINZ-T enables flexible current regulation across the entire load current range. The regulator includes built-in short-circuit protection, over-temperature protection, undervoltage lockout (UVLO) and adjustable soft-start capabilities. It is ideal for applications that demand level of efficiency, throttling protection, low minimum operating voltage, and a broad range of voltages.

The ISL91133IINZ-T provides high efficiency over a wide load current range, and therefore enables for smaller, lighter, and cost-efficient power system designs. With up to 94.7% efficiency, the device is capable of operating from input voltage rail sources ranging from 3.5V to 14V, while maintaining a constant VOUT, regardless of the load.

The ISL91133IINZ-T is specifically designed for application field. It offers adjustable current limit settings with selectable settings available up to 4A, making it suitable for a wide variety of loads, including high-current FPGAs, CPU/GPUs and other high-current auto-suspend processors. Its output voltage operates between 0.8V and 12V, making it an ideal solution for low voltage operation and providing high system power density.

At low load currents, the ISL91133IINZ-T offers the ability to reduce input voltage using light load pulse-skipping modulation, achieving increased efficiency and enabling further system size and cost savings. Its synchronous buck topology also provide flexibility for system design, where various compensation and loop filtering techniques can be applied. Its adjustable current limit stability is maintained at all load current range, enabling improved light load regulation performance.

The working principle of ISL91133IINZ-T follows a synchronous buck topology. It uses a power switching MOSFET as a switch to convert the DC input voltage to an adjustable regulated DC output voltage. The output voltage is regulated by the Pulse-Width Modulation (PWM) control circuitry to maintain a stable and regulated output voltage. The current limit setting is adjusted through the control pins, making it a versatile solution for a variety of IA, IGPU, and PLD-driven applications. The input voltages of the ISL91133IINZ-T are adjustable between 3.5V and 14V, and the output voltage can be set between 0.8V and 12V.

The ISL91133IINZ-T is designed with a high-efficiency synchronous buck topology, enabling an overall power system design with a small footprint, reduced costs, and improved system performance. It is an optimal solution for applications in space-constrained power requirements with the highest efficiency at the lower currents. Furthermore, it is equipped with built-in safety features such as over temperature protection, over/under voltage protection, and adjustable current limit to manage high current threats.

In conclusion, the ISL91133IINZ-T is an excellent choice for low and high caliber power systems due to its high efficiency, advanced power and light load regulation, a wide voltage input and output range, and its optimal performance in a variety of applications. The ISL91133IINZ-T is a great fit for high efficiency power systems needing a strong and capable DC/DC switching regulator.

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