Data Sheet Rev. 3
CN Rev. 2 | JP Rev. 2
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Overview

Features and Benefits

  • Internal 26mΩ RDS(ON) MOSFETs
  • Guaranteed 8A Output Current
  • Adjustable Overcurrent Protection
  • 1% Output Accuracy Over Temperature
  • Operates from 4.5V to 14V Supply
  • Adjustable Output from 0.6V to 0.85 x VIN
  • Soft-Start Reduces Inrush Supply Current
  • 250kHz to 1.2MHz Adjustable Switching or SYNC Input
  • Compatible with Ceramic, Polymer, and Electrolytic Output Capacitors
  • SYNCOUT Synchronizes 2nd Regulator 180° Out-of-Phase
  • 36-Pin, Lead-Free, 6mm x 6mm TQFN Package

Product Details

The MAX8654 high-efficiency switching regulator delivers up to 8A of load current at output voltages from 0.6V to 0.85 x VIN. The IC operates from 4.5V to 14V, making it ideal for on-board point-of-load and postregulation applications, with total output error less than ±1% over load, line, and temperature ranges.

The MAX8654 is a fixed-frequency PWM mode regulator with a switching frequency range of 250kHz to 1.2MHz set by an external resistor or SYNC input. High-frequency operation allows for an all-ceramic-capacitor solution. A SYNCOUT output is provided to synchronize a second regulator switching 180° out-of-phase with the first to reduce the input ripple current and consequently reduce the required input capacitance. The high operating frequency minimizes the size of external components.

The on-board low RDS(ON) dual-nMOS design keeps the board cooler at heavy loads while minimizing the critical inductances, making the layout a much simpler task with respect to the discrete solutions.

The MAX8654 comes with a high-bandwidth (20MHz) voltage-error amplifier. The voltage-mode control architecture and the op-amp voltage-error amplifier permit a type 3 compensation scheme to be utilized to achieve maximum loop bandwidth, up to 20% of the switching frequency. High loop bandwidth achieves fast transient response resulting in less output capacitance required.

The MAX8654 offers programmable soft-start to accommodate different types of output capacitors and reduce input inrush current. The MAX8654 is available in a 36-lead TQFN package.

Applications

  • DDR Memory
  • Graphic Cards
  • Network-Power Supplies
  • POL Power Supplies
  • RAID Power Supplies
  • Servers

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Documentation & Resources

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    Tools & Simulations

    EE-Sim Power® Tools

    The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

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    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

    MAX8654 Material Declaration
    Quality And Reliability
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