1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Down (Buck) Regulators
  5. Internal Power Switch Buck Regulators
  6. MAX8508


Features and Benefits

  • Integrated 75mΩ (typ) Bypass FET
  • 38mV Dropout at 600mA Load
  • Up to 94% Efficiency
  • Dynamically Adjustable Output from 0.4V to 3.4V (MAX8506, MAX8507)
  • Externally Fixed Output from 0.75V to 3.4V (MAX8508)
  • 1MHz Fixed-Frequency PWM Switching
  • 600mA Guaranteed Output Current
  • Shutdown Mode 0.1µA (typ)
  • 16-Pin Thin QFN (4mm x 4mm, 0.8mm max Height)

Product Details

The MAX8506/MAX8507/MAX8508 integrate a PWM step-down DC-DC regulator and a 75mΩ (typ) bypass FET to power the PA in WCDMA and cdmaOne™ cell phones. The supply voltage range is from 2.6V to 5.5V, and the guaranteed output current is 600mA. One megahertz PWM switching allows for small external components.

The MAX8506 and MAX8507 are dynamically controlled to provide varying output voltages from 0.4V to 3.4V. The MAX8508 is externally programmed for fixed 0.75V to 3.4V output. Digital logic enables a high-power (HP) bypass mode that connects the output directly to the battery for all versions. The MAX8506/MAX8507/MAX8508 are designed so the output settles in less than 30µs for a full-scale change in output voltage and load current.

The MAX8506/MAX8507/MAX8508 are offered in 16-pin 4mm x 4mm thin QFN packages (0.8mm max height).


  • WCDMA/NCDMA Cell Phones
  • Wireless Modems
  • Wireless PDAs, Palmtops, and Notebook Computers

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)

Product Recommendations

MAX8508 Companion 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.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
MAX8508ETE+ Material Declaration Reliability Data 16-LFCSP-4X4X0.75
MAX8508ETE+T Material Declaration Reliability Data 16-LFCSP-4X4X0.75
Wafer Fabrication Data MAX8508 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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