MAX642AESA+T

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The MAX642AESA+T is a high-performance, process-optimized full-integrated DC-DC switching regulator designed for step-down conversion applications. It offers a complete solution that helps reduce cost, improve system reliability and save design time. Featuring proprietary Digital Adaptive Impedance Tuning technology, the MAX642AESA+T efficiently delivers the optimal efficiency for varying loads, resulting in superior output power regulation. The wide input voltage range from 3V to 48V, a maximum output current of 8A and an ultra-low 10mV voltage ripple ensures stable and reliable operation. In addition, the integrated temperature-compensated internal oscillator allows for a simplified design as no external frequency setting components are required.

The MAX642AESA+T is composed of a switching regulator and a power MOSFET. It also includes a wide array of protective features, such as current limiting and thermal shutdown. The device can operate within a wide temperature range of -40°C to +85°C without external heatsink. It supports both fixed frequency and adjustable frequency with a wide operating range. Additionally, the device features an efficient fixed-frequency PWM mode. The device utilizes synchronous rectification technology, which provides up to 97% conversion efficiency and enables the device to deliver a higher output current with smaller external components.

The MAX642AESA+T is designed for robust and reliable applications such as automotive, industrial, telecommunications and computer/server systems. The comprehensive set of features makes it suitable for a wide range of step-down DC-DC conversions. It is mainly used in situations where high efficiency, high reliability and ultra-low output ripple are required. Applications for the device include powering custom logic, microcontrollers, ASICs, processors, FPGAs and other integrated circuits from intermediate bus voltages.

At the core of the MAX642AESA+T are its internal circuits that control the switching FET, regulate the output current and monitor the status of the system. The device is controlled by a current mode controller with an adjustable PWM frequency. The internal current sense amplifier monitors the output current to ensure that the maximum current limit is not exceeded. The power MOSFET is an N-channel type which is controlled using a simple pulse-width modulation (PWM) signal. The integrated temperature-compensated oscillator ensures that the output frequency remains constant over the full range of operating temperatures. The MAX642AESA+T also includes safeguards such as thermal shutdown and current limiting, which helps protect the device from damage in case of over-load or over temperature conditions.

In summary, the MAX642AESA+T is a high-performance DC-DC switching regulator for step-down conversion applications. It delivers high efficiency, low ripple, and good transient response making it suitable for a wide range of applications. The integrated features such as Digital Adaptive Impedance Tuning, current limit and thermal shutdown, reduce required external components, improving system reliability and efficiency as well as cost. To ensure reliable operation, the device is designed to operate within a wide temperature range of -40°C to +85°C without an external heatsink Applications include powering custom logic and microcontrollers, ASICs, processors, FPGAs and other integrated circuits.

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