MAX20812AFH+T

The MAX20812/MAX20812T are dual-output, fully integrated, highly efficient, step-down DC-DC switching regulators. These regulators are able to operate from 2.7V to 16V input supplies, and each output can be regulated from 0.5V to 5.8V, delivering up to 6A of load current per output. With the MAX20812, the two outputs can be connected in parallel as a single-output, dualphase regulator that supports up to 12A load current. The switching frequency of this device can be configured from 500kHz to 3.0MHz and provides the capability of optimizing the design in terms of solution size and performance. The MAX20812/MAX20812T utilize fixed-frequency, current-mode control with internal compensation. The dual-switching regulators operate 180° out-of-phase. The MAX20812/MAX20812T feature a selectable advanced modulation scheme (AMS) to provide improved dynamic load-transient performance. The devices also feature 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 ground. The MAX20812/MAX20812T have an internal 1.8V LDO output to power the gate drives (VCC) and internal circuitry (AVDD). The devices also have an optional LDO input pin (LDOIN), allowing connection from a 2.5V to 5.5V bias input supply for optimized efficiency. The MAX20812/MAX20812T integrate multiple protections including positive and negative overcurrent protection, output overvoltage protection, and overtemperature protection to ensure a robust design. The MAX20812/MAX20812T are available in a compact 3.5mm x 4.6mm FC2QFN package that supports -40℃ to +125℃ junction temperature operation. The MAX20812 package has an open top, and the MAX20812T package has a closed top.

Applications

• Data Center Power
• Communications Equipment
• Networking Equipment
• Servers and Storage Point-of-Load Voltage Regulators

Key features

• High Power Density with Low Component Count
• Dual-Output or Dual-Phase Operation
• Single-Supply Operation with Integrated LDO for Bias Generation
• Optional 2.5V to 5.5V External Bias for Higher Efficiency
• Compact 3.5mm x 4.6mm, 21-Pin, FC2QFN Package
• Internal Compensation
• Wide Operating Range
• 2.7V to 16V Input Voltage Range
• 0.5V to 5.8V Output Voltage Range
• 500kHz to 3MHz Configurable Switching Frequency
• -40℃ to +125℃ Junction Temperature Range
• Three Pin-Strap Programming Pins to Select Different Configurations
• Independent Enable and Power Good for Each Output
• Optimized Performance and Efficiency
• 92.5% Peak Efficiency with VDDH = 12V, VOUT = 1.8V, and fSW = 1MHz
• Interleaved 180° Out-of-Phase Operation
• Selectable AMS to Improve Load Transient
• Selectable DCM to Improve Light Load Efficiency
• Active Current Balancing for Dual-Phase Operation (MAX20812 only)