ISL78219ARTZ-T7A

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The ISL78219ARTZ-T7A is a 3V to 42V input, 1.8V to 20V output, high-efficiency integrated step-down regulator from Intersil. It is designed to deliver up to 4A of output current and features a highly integrated power stage for ease of use, compact size, and low-cost solution. The switching regulator offers a wide range of operating conditions from a variety of standard input sources. Its ability to operate from input sources of 3V to 42V makes it ideal for a wide range of applications from automotive and industrial to consumer-type products.

The ISL78219ARTZ-T7A is a DC/DC switching regulator designed to provide regulated output voltages for a variety of loads, both continuous and pulsed. This product provides a high-efficiency, flexible solution for step-down (buck) and adjustable applications. It integrates a switching power stage with a controller integrated circuit, power MOSFETs, bootstrap diodes, current sensing and voltage references. The switching controller includes a non-overlap pulse-width modulator (PWM) to maximize power transfer, and efficiently regulate output voltage.

The switching regulator operates by rapidly switching the power MOSFET devices on and off, allowing controlled current to flow to the output. The duty cycle of the switching regulator is controlled by the internal PWM controller, which senses the output voltage using a feed-forward control scheme. The switching frequency is programmable, and the output can be operated over a wide range, from 0.208 to 77V.

The ISL78219ARTZ-T7A features an adjustable soft-start, over-current protection, thermal protection and low-voltage cutoff. It also features an output voltage slew rate control, allowing the output voltage to adjust in two different modes. This helps insure that the system does not overshoot the set point voltage when lower voltage values of the output are desired.

The ISL78219ARTZ-T7A is an integrated and cost effective voltage regulator solution that can be used in applications requiring compact size, high-efficiency, and low-cost. It is ideal for automotive, industrial, and consumer applications, as it is capable of operating from input sources of 3V to 42V. It features low-noise operation, a fast transient response, and high temperature operating capabilities. The product has built-in protection features, including adjustable soft-start, over-current protection, thermal protection, and low-voltage cutoff, making it a safe and reliable solution.

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