MAX8655ETN+

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The MAX8655ETN+ is a member of a family of DC to DC step-down switchers developed by Maxim Integrated Products. This device features a user-defined output voltage range, which means that the user can select the output voltage within the defined range. The user can also choose the current limit setting to replace the part with the same voltage, but with different settings. It is designed to support a wide range of applications that require maximum nominal current, including industrial, automotive, and general-purpose designs.

The MAX8655ETN+ utilizes a synchronous rectified buck topology in which a MOSFET switch is driven by an integrated power logic block to form a high-efficiency power converter. This power-conversion architecture is optimized for low EMI noise, efficiency, and system size. The buck switch will operate at 500kHz for high efficiency at light-load conditions. The integrated power logic also offers a logic-controlled soft-start capability for high- surge current control.

The MAX8655ETN+ includes built-in current limit, thermal shutdown, and overvoltage protection, thus eliminating the need for external fuses, sense resistors, and other safety components. The output voltage is digitally adjustable over the specified range. The device also features a 3-bit soft start, i.e., it slowly ramps up the voltage on the output to reduce high-startup current surges. It has a voltage range of 4.5 V to 18 V and can deliver a maximum output current of 8.5 A.

The die is constructed on Maxim Integrated’s proprietary BiCMOS process, which allows the MAX8655ETN+ to achieve high performance while maintaining a small footprint and low costs. The device is available in both 0.50mm and 0.70mm pin pitches. It is suitable for use in desktop PCs, server applications, point-of-load regulation, battery chargers, and other non-isolated DC-DC applications.

The MAX8655ETN+ offers excellent thermal performance. Its extremely low thermal resistance allows the device to operate more efficiently at high power densities and temperatures, thereby reducing the need for heatsinking and other cooling solutions. The device is certified to the RoHS restricting hazardous substances, making it an environmentally friendly solution.

The MAX8655ETN+ is ideal for low-voltage, high-current applications. Designers can apply this device for regulation in a wide range of applications, such as computing systems, portable electronics, battery chargers, and other non-isolated DC-DC systems. Its high efficiency and low price point makes it suitable for cost-sensitive solutions.

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