Features and Benefits

  • Dual, High-Efficiency, Synchronous Rectified Step-Down Converter
  • Main Power
    • Adjustable from +1.25V to +5.5V
    • Over 2A Load Current
    • Up to 95% Efficiency
  • Core Power
    • Adjustable from 1V to 5V
    • Internal Switches
    • Up to 1.5A Load Current
    • Up to 92% Efficiency
  • 100% (max) Duty Cycle
  • Up to 1.25MHz Switching Frequency
  • Input Voltage Range from +2.7V to +28V
  • 170µA Quiescent Current
  • 5µA Shutdown Current
  • Digital Soft-Start
  • Independent Shutdown Inputs

Product Details

The MAX1775 dual, step-down DC-DC converter generates both the main (+3.3V at over 2A) and core (+1.8V at up to 1.5A) supplies for a complete power solution for PDAs, subnotebooks, and other hand-held devices. The main output is adjustable from +1.25V to +5.5V. The core output is adjustable from 1V to 5V. Both switching converters operate at up to 1.25MHz for small external components and use synchronous rectifiers to achieve efficiencies up to 95%. Operation with up to 100% duty cycle provides the lowest possible dropout voltage to extend useful battery life.

The MAX1775 accepts inputs from +2.7V up to +28V, allowing use with many popular battery configurations as well as AC-DC wall adapters. Digital soft-start reduces battery current surges at power-up. Both the main and core converters have separate shutdown inputs. The MAX1775 comes in a small 16-pin QSOP package.

The MAX1775 evaluation kit is available to help reduce design time.


  • Handheld Computers
  • Internet Access Tablets
  • PDAs
  • POS Terminals
  • Subnotebooks

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Reference Designs (1)

Product Recommendations

MAX1775 Companion Parts

Recommended Related Parts

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.

Sample & Buy

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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