1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Down (Buck) Regulators
  5. Internal Power Switch Buck Regulators
  6. MAX17620


Features and Benefits

  • Minimizes External Components, Reducing Total Cost
    • Synchronous Operation for High Efficiency and Reduced Cost
    • Internal Compensation for Stable Operation at Any Output Voltage
    • All-Ceramic Capacitor Solution
    • 4MHz Operation
    • Only 5 External Components Required
    • Total Solution Size is 12mm2 (Sum of the Components Area)
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 2.7V to 5.5V Input Voltage Range
    • Adjustable 1.5V to 100% VIN Output Voltage Range
    • Delivers Up to 600mA Load Current
    • 100% Duty-Cycle Operation
    • +1%/-0.75% Reference Voltage Accuracy
    • Available in a 2mm x 2mm TDFN Package
  • Reduces Power Dissipation
    • Peak Efficiency 91%
    • Skip Mode for High Light-Load Efficiency
    • Shutdown Current = 0.1µA
  • Operates Reliably
    • Peak Current-Limit Protection
    • Soft-Start Reduces Inrush Current During Startup
    • Built-In Output-Voltage Monitoring (Open-Drain PGOOD Pin)
    • -40°C to +125°C Operation

Product Details

The MAX17620 is a high-frequency, high-efficiency synchronous step-down DC-DC converter with integrated MOSFETs that operates over a 2.7V to 5.5V input voltage range. The device supports up to 600mA load current and 1.5V to 100% VIN output voltage. High-frequency operation enables the use of small, low-cost inductors and capacitors.

The device features selectable PWM/skip mode of operation at light loads and operates at a 4MHz fixed-frequency in PWM mode. Skip mode improves system efficiency at light loads, while PWM mode maintains a constant switching frequency over the entire load. In skip mode, the device draws only 40µA of quiescent current from the supply input. In shutdown mode, the current consumption is reduced to 0.1µA.

The device also features a soft-start feature to reduce the inrush current during startup, and also incorporates an enable (EN) pin to turn on/off the device. An open-drain PGOOD pin provides power-good signal to the system upon achieving successful regulation of the output voltage.

The MAX17620 is available in an 8-pin, 2mm x 2mm TDFN package and operates over the -40°C to +125°C temperature range.


  • Battery-Powered Instruments
  • Distributed Power Systems
  • Point-of-Load Power Supply
  • Standard 5V Rail Supplies

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)

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.



MAX17620 SIMPLIS Schematic

MAX17620 SIMPLIS Schematic

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX17620ATA+ Material Declaration Reliability Data 8-LFCSP-2X2X0.75
MAX17620ATA+T Material Declaration Reliability Data 8-LFCSP-2X2X0.75
Wafer Fabrication Data MAX17620 Reliability Data

Sample & Buy

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Buy Now Pricing

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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

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