Click here for production status of specific part numbers. MAX20808 Dual-Output 4A, 3MHz, 2.7V16V Step-Down Switching Regulator General Description Benefits and Features The MAX20808/MAX20808T is a dual-output, fully High-Power Density with Low Component Count integrated, highly efficient, step-down DC-DC switching Dual-Output or Dual-Phase Operation regulator. The regulator is able to operate from 2.7V to Single-Supply Operation with Integrated LDO for 16V input supplies, and each output can be regulated Bias Generation from 0.5V to 5.8V, delivering up to 4A of load current per Optional 2.5V to 5.5V External Bias for Higher output. With the MAX20808, the two outputs can be Efficiency connected in parallel as a single-output, dual-phase Compact 3.5mm x 4.6mm, 21-Pin, FC2QFN regulator that supports up to 8A load current. Package Internal Compensation The switching frequency of the device can be configured Wide Operating Range from 500kHz to 3MHz and provides the capability of 2.7V to 16V Input Voltage Range optimizing the design in terms of solution size and 0.5V to 5.8V Output Voltage Range performance. 500kHz to 3MHz Configurable Switching The MAX20808/MAX20808T utilizes fixed-frequency, Frequency current-mode control with internal compensation. The -40C to +125C Junction Temperature Range dual-switching regulators operate 180 out-of-phase. Three Pin-Strap Programming Pins to Select The MAX20808/MAX20808T features a selectable Different Configurations advanced modulation scheme (AMS) to provide Independent Enable and Power Good for Each improved dynamic load transient performance. The Output device also features selectable discontinuous current Optimized Performance and Efficiency mode (DCM) operation to improve light load efficiency. 92.5% Peak Efficiency with VDDH = 12V, VOUT = Operation settings and configurable features can be 1.8V, and fSW = 1MHz selected by connecting pin-strap resistors from the Interleaved 180 Out-of-Phase Operation PGM pins to ground. Selectable AMS to Improve Load Transient The MAX20808/MAX20808T has an internal 1.8V low- Selectable DCM to Improve Light Load Efficiency dropout (LDO) output to power the gate drives (V ) and Active Current Balancing for Dual-Phase CC internal circuitry (AVDD). The device also has an Operation (MAX20808 only) optional LDO input pin (LDOIN), allowing connection from a 2.5V to 5.5V bias input supply for optimized Electrical and Thermal Ratings efficiency. The MAX20808/MAX20808T integrates multiple DESCRIPTION CURRENT INPUT OUTPUT protections including positive and negative overcurrent RATING* VOLTAGE VOLTAGE protection, output overvoltage protection, and (DUAL- (V) (V) overtemperature protection to ensure a robust design. PHASE) (A) The MAX20808/MAX20808T is available in a compact Electrical Rating 8 2.7 to 16 0.5 to 5.8 3.5mm x 4.6mm FC2QFN package that supports -40C Thermal Rating to +125C junction temperature operation. The TA = 85C, no air 8 12 5.0 MAX20808 package has an open top, and MAX20808T flow package has a closed top. Thermal Rating Applications TA = 55C, 8 12 5.0 200LFM Communications Equipment *Maximum TJ = 125C. For specific operating conditions, see Networking Equipment the Safe Operating Area (SOA) curves in the Typical Servers and Storage Equipment Operating Characteristics section. Point-of-Load Voltage Regulators P Chipsets Memory V DDQ I/O Pins of an FPGA/DSP/MCU 19-101082 Rev 0 5/21 Click here for production status of specific part numbers. MAX20808 Dual-Output 4A, 3MHz, 2.7V16V Step-Down Switching Regulator SIMPLIFIED APPLICATION CIRCUIT MAX20808/MAX20808T DUAL-OUTPUT APPLICATION CIRCUIT 2.7V TO 16V INPUT MAX20808/ MAX20808T V BST2 DDH1 VDDH2 LX2 OUTPUT2: 0.5V TO 5.8V, 4A OPTIONAL 2.5V TO 5.5V LDOIN SNSP2 V CC AVDD BST1 PGOOD1 LX1 OUTPUT1: 0.5V TO 5.8V, 4A PGOOD2 EN1 SNSP1 EN2 PGM0 PGM1 PGM2 PGND1 AGND PGND2 MAX20808 SINGLE-OUTPUT DUAL-PHASE APPLICATION CIRCUIT 2.7V TO 16V INPUT MAX20808 VDDH1 BST2 VDDH2 LX2 OUTPUT: 0.5V TO 5.8V, 8A LDOIN OPTIONAL 2.5V TO 5.5V AVDD COUPLED SNSP2 INDUCTOR VCC OR DISCRETE INDUCTORS AVDD BST1 PGOOD1 LX1 PGOOD2 EN1 SNSP1 EN2 PGM0 PGM1 PGM2 PGND1 AGND PGND2 19-XXXXXX Rev 0 MM/YY