Analog Devices MAX20840T

Description

The MAX20840T is a fully integrated, highly efficient, step-down DC-DC switching regulator with a PMBus interface. The device operates from 2.7V to 16V input supplies, and the output can be adjusted from 0.4V to 5.8V, delivering up to 40A of load current.The switching frequency of the device can be configured from 500kHz to 2MHz to provide optimization of the design in terms of size and performance.The MAX20840T utilizes fixed-frequency, current-mode control with internal compensation. The IC features selectable advanced modulation scheme (AMS) to provide improved performance during fast load transients. Operation settings and configurable features can be selected by connecting a pin-strap resistors from PGM_ pins to ground or using PMBus commands.The MAX20840T 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.

Features

High Power Density with Low Component CountCompact 4.3mm x 6.55mm, 16-Pin FC2QFN PackageInternal CompensationSingle-Supply Operation with Integrated LDO for Bias GenerationWide Operating Range2.7V to 16V Input Voltage Range0.4V to 5.8V Output Voltage Range500kHz to 2MHz Configurable SwitchingFrequency

• 40°C to +125°C Junction Temperature RangeOptimized Performance and Efficiency94.5% Peak Efficiency with VDDH = 12V andVOUT = 1.8VHigh Efficiency with Optional External Bias Input SupplyAMS to Improve Load-Transient ResponseDifferential Remote SensePMBus InterfacAdaptive Voltage Scaling of 0.4V to 0.8V Reference RangePMBus Telemetry of Output Current, OutputVoltage, Input Voltage, and Junction Temperature

Typical applications

More information

• Datasheet
• IC product information