MAX8655ETN+

The MAX8655ETN+ is a highly integrated, 25A, wide-input, internal MOSFET, step down regulator in 56 pin TQFN package. The MAX8655 uses peak current-mode control architecture with an adjustable (200KHz to 1MHz), constant switching frequency which is externally synchronizable. The MAX8655’s adjustable current limit uses the inductor’s DC resistance to improve efficiency or an external sense resistor for higher accuracy. Foldback type current limit is available to reduce the power dissipation under severe-overload or short-circuit conditions. A reference input is provided for use with a high-accuracy external reference or for DDR and tracking applications. Monotonic start-up provides safe starting into a prebiased output, where traditional step down regulators discharge the output capacitor during soft-start, creating a negative voltage at the output and possibly damaging the load.

• Input voltage range from a 4.5V to 25V
• Output voltage adjustable from 0.7V to 5.5V at loads up to 25A
• 1% FB voltage accuracy over temperature, independently adjustable overvoltage protection
• Adjustable output voltage down to 0.7V, 180° phase-shifted synchronization
• Removing the board trace inductances ensures the highest efficiency at high frequency
• Enable input, power-OK (POK) output, adjustable soft-start
• Adjustable overcurrent limit, adjustable slope compensation
• Selectable current-limit mode latch-off or automatic recovery
• Monotonic output voltage rise at start-up into prebias output
• Output sources and sinks current for DDR applications, operating temperature range from -40 to +85°C
• IBA Power Suppliesl Networkingl Nonisolated DC-DC Power Modulesl Notebook Computersl Point-of-Load Power Supplies; Servers and Workstations; Telecom Power

Applications

Power Management, Communications & Networking, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party