ISL6440IAZ-T7

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The ISL6440IAZ-T7 is a low-power,fixed Frequency Synchronous Step-Down DC/DC controller from Intersil Corporation. This device offers an integrated power stage to reduce external component count,making it an ideal solution for space-sensitive power applications. With wide input voltage range (4.5 V to 25 V),adjustable output voltage (0.6 V to 3.2 V),and up to 12 A continuous output current,this device offers a high-performance and cost-effective solution for a wide range of power conversion requirements.

Features of ISL6440IAZ-T7

• Input voltage range: 4.5V to 25V
• Adjustable Output voltage range: 0.6V to 3.2V
• Continuous Output current up to 12A
• Fixed-frequency Synchronous Step-down DC/DC controller with integrated power stage
• High output accuracy
• High efficiency
• Low quiescent current
• Over temperature protection
• Programmable Soft-start/Ramp time
• Integrated PWM oscillator and loop compensation
• Integrated High-side and Low-side MOSFET drivers

Application of ISL6440IAZ-T7

The ISL6440IAZ-T7 can be used in a wide range of applications,including mobile and embedded computing,industrial,consumer and automotive applications. The small form factor and low power consumption of this device makes it an ideal solution for space-sensitive applications. Its high efficiency and accurate output voltage regulation means that this device can be used in applications where efficiency and accuracy are important. The integrated PWM oscillator and loop compensation provides stable and reliable operation. The programmable soft-start/ramp time and over temperature protection features provide additional protection against unexpected events.

Working Principle of ISL6440IAZ-T7

The ISL6440IAZ-T7 is a synchronous step-down DC/DC controller with an integrated MOSFET driver. The controller uses a fixed frequency pulse-width modulation (PWM) voltage regulation technique. The controller includes an oscillator that generates an adjustable period signal,a comparator that compares the current output voltage to the feedback signal,and an error amplifier that controls the MOSFET driver. When the output voltage is higher than desired,the error amplifier drives the MOSFET driver to reduce the voltage. Conversely,when the output voltage is lower than desired,the error amplifier drives the MOSFET driver to increase the voltage. This closed-loop voltage regulation system ensures that the output voltage remains stable,while maintaining high efficiency and accurate output regulation.

The ISL6440IAZ-T7 includes several other features that ensure the device operates safely and reliably in all conditions. The integrated over-temperature protection prevents the device from overheating due to prolonged use. The integrated high-side and low-side MOSFET drivers ensure that the MOSFETs are efficiently driven by the error amplifier,while the programmable soft-start/ramp time ensures that the output voltage is ramped up and down slowly for improved reliability. The integrated PWM oscillator and loop compensation ensure that the controller operates reliably and accurately.

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