1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Up (Boost) Regulators
  5. Internal Power Switch Boost Regulators
  6. MAX5026


Features and Benefits

  • Input Voltage Range:
    • 3V to 11V (MAX5026/MAX5028)
    • 4.5V to 11V (MAX5025/MAX5027)
  • Wide Output Voltage Range: VCC to 36V
  • Output Power: 120mW (max)
  • User-Adjustable Output Voltage with MAX5025/MAX5026 Using External Feedback Resistors
  • Fixed 30V Output Voltage: MAX5027/MAX5028
  • Internal 1.3Ω (typ), 40V Switch
  • Constant PWM Frequency Provides Easy Filtering in Low-Noise Applications
  • 500kHz (typ) Switching Frequency
  • 1µA (max) Shutdown Current
  • Small, 6-Pin SOT23 Package

Product Details

The MAX5025–MAX5028 constant-frequency, pulse-width modulating (PWM), low-noise boost converters are intended for low-voltage systems that often need a locally generated high voltage. These devices are capable of generating low-noise, high output voltages required for varactor diode biasing in TV tuners, set-top boxes, and PCI cable modems. The MAX5025–MAX5028 operate from as low as 3V and switch at 500kHz.

The constant-frequency, current-mode PWM architecture provides for low output noise that is easy to filter. A 40V lateral DMOS device is used as the internal power switch, making the devices ideal for boost converters up to 36V. The MAX5025/MAX5026 adjustable versions require the use of external feedback resistors to set the output voltage. The MAX5027/MAX5028 offer a fixed 30V output. These devices are available in a small, 6-pin SOT23 package.


  • Avalanche Photodiode Biasing
  • LCD Power Supply
  • Low-Noise Varactor Diode Biasing
  • PCI Cable Modem
  • Set-Top Box Tuner Power Supply
  • TV Tuner Power Supply
  • Voice-Over-Cable

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.

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
MAX5026EUT+ Material Declaration Reliability Data Small-Outline Transistor Package
MAX5026EUT+T Material Declaration Reliability Data Small-Outline Transistor Package
Wafer Fabrication Data MAX5026 Reliability Data

PCN-PDN Information

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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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