ISL6539IA-T

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The ISL6539IA-T is a voltage regulator from Intersil Corporation, a leader in analog and power management semiconductors. It is designed for applications requiring high reliability, low power, and high current range. It is ideal for high frequency switching regulators, DC/DC converters, and other power management systems where accurate voltage regulation, low noise, and high efficiency are important design considerations.

The ISL6539IA-T is a three-phase pulse-width modulation voltage mode buck regulator integrated circuit with an integrated thermally enhanced PWM controller. It features an on-chip precision bandgap reference, linear current waveform cross regulation, and power MOSFET drivers with adjustable slew rates. The integrated PWM controller enables low-noise operation over a wide range of input and output voltages and currents, and provides tight voltage and current regulation. The device also features comprehensive fault protection including cycle-by-cycle current limiting and thermal shutdown.

The ISL6539IA-T is a special purpose voltage regulator specifically designed for low-noise, high efficiency, and low-power operation. It features a wide input voltage range of 2.5V to 46V and an adjustable 3-phase output voltage range of 0.8V to 5.5V. It can deliver up to 14A continuous output current with a maximum output power of 80W and a switching frequency of 700kHz to 2.2MHz. The device also includes an integrated MOSFET driver, which allows for faster switching and higher efficiency. Additionally, it features an internal and external synchronous rectification for increased efficiency and lower output ripple.

The ISL6539IA-T works by controlling the duty cycle of the pulse-width modulation (PWM) signals generated by the onboard PWM controller. This duty cycle dictates the average output voltage by modulating the switching frequency. The onboard current sensing circuitry monitors the output current so that the PWM signals can be adjusted in order to achieve the desired output voltage. An internal over-temperature circuit shuts down the converter when the temperature reaches a certain threshold. Additionally, an external voltage reference can be used to provide precise voltage regulation.

The ISL6539IA-T is an ideal solution for applications requiring high reliability, low power, and high current range. It is well suited for power management systems in industrial, automotive, computing, and consumer electronic applications. It is especially well suited for high frequency switching regulators, DC/DC converters, and other power management systems where accurate voltage regulation, low noise, and high efficiency are important design considerations.

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