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Analog Devices Inc. MAX20828T Step Down DC-DC Switching Regulator is a dual-output, fully integrated, highly efficient device that operates from 2.7V to 16V input supplies. Each output can be regulated from 0.5V to 5.8V, delivering up to 8A of load current per output. The two outputs can be connected in parallel as a single output, dual-phase regulator that supports up to 16A load current. The switching frequency can be configured from 500kHz to 3.0MHz and provides design optimization regarding solution size and performance. Available in a compact 3.5mm x 4.6mm FC2QFN package, MAX20828T operates within a -40°C to +125°C junction temperature range.
The MAX20828T utilizes fixed-frequency, current-mode control with internal compensation. The dual-switching regulators operate 180° out-of-phase. MAX20828T features a selectable advanced modulation scheme (AMS) to improve dynamic load transient performance. The device also features selectable discontinuous current mode (DCM) operation to improve light load efficiency. Operation settings and configurable features can be selected by connecting pin-strap resistors from the PGM_ pins to the ground.
The Analog Devices MAX20828T has an internal 1.8V LDO output to power the gate drives (VCC) and internal circuitry (AVDD). The device also has an optional LDO input pin (LDOIN), allowing connection from a 2.5V to 5.5V bias input supply for optimized efficiency. Protections include positive and negative overcurrent protection, output overvoltage protection, and overtemperature protection.
