MAX20796GFB+

Overview

The MAX20796GFB+ is an integrated two-phase, single-supply step-down switching regulator designed for high-current applications. It supports a 4.5V to 16V input voltage range and delivers up to 60A of output current, with optional third-phase expansion to 90A. The device offers a configurable output voltage range from 0.5V to 5.5V and operates at switch frequencies between 200kHz and 799kHz. It features a built-in linear regulator for single-supply operation and includes comprehensive protection mechanisms such as overcurrent and thermal shutdown.

Feature Summary

• Integrates dual-phase control with internal linear regulator for simplified single-supply power architectures
• Supports coupling inductor technology to minimize external capacitance requirements while maintaining high performance
• Provides PMBus Rev 1.3 compatible interface for precise configuration of system parameters including soft-start and current thresholds

Applications

• Server and telecommunications infrastructure power supplies
• Microprocessor core voltage regulation
• Memory VDDQ power delivery
• Point-of-load regulators in network equipment

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors due to limited supply status. Confirm package integrity upon receipt, as the FC2QFN-35 housing requires careful handling. Ensure compatibility with existing PCB layouts regarding the 4mm by 10.5mm footprint dimensions before finalizing procurement orders.

Selection Notes

Select this controller for designs requiring high efficiency and compact form factors in server or storage environments. Consider the MAX20796A variant if fixed 1V output and 800kHz frequency are sufficient. Evaluate thermal management strategies given the high current capabilities and ensure adequate copper area for the exposed pad to maintain optimal junction temperatures under full load conditions.

Part Context

This component belongs to the Maxim Integrated power management portfolio, now part of Analog Devices. It serves as a high-performance solution for demanding digital loads where space constraints and efficiency are critical. The device replaces discrete solutions by integrating control logic, drivers, and protection circuits into a single compact package suitable for dense board layouts.

Replacement Considerations

The MAX20796A is a related variant offering pre-configured settings. Direct pin-to-pin replacements within the same family include the LTC3888-1, LTC7131-1, and LTC7132. Verify electrical specifications and software compatibility when substituting with these comparable synchronous buck controllers.