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Analog Devices MAX20808 Dual-Output Step-Down Switching Regulator is designed to operate from 2.7V to 16.0V input supplies. Each output can be regulated from 0.5V to 5.8V, delivering up to 4A of load current per output. With the MAX20808, the two outputs can be connected as a single-output, dual-phase regulator that supports up to 8A load current. The switching frequency can be configured from 500kHz to 3MHz. The module utilizes fixed-frequency, current-mode control with internal compensation. The dual-switching regulators operate 180° out-of-phase. The MAX20808 features a selectable advanced modulation scheme (AMS) to provide improved 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 MAX20808 has an internal 1.8V low-dropout (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. The MAX20808 integrates multiple protections, including positive and negative overcurrent protection, output overvoltage protection, and overtemperature protection to ensure a robust design.
Analog Devices MAX20808 Dual-Output Switching Regulator is available in a compact 3.5mm x 4.6mm FC2QFN package that supports an operating junction temperature range of -40°C to +125°C.
