1. Products
  2. Power Management
  3. LDO Linear Regulators
  4. Positive Linear Regulators (LDO)
  5. MAX1818


Features and Benefits

  • Guaranteed 500mA Output Current
  • Low 120mV Dropout at 500mA
  • ±1% Output Voltage Accuracy
    • Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5V
    • Adjustable from 1.25V to 5.0V
  • Power OK Output
  • Low 125µA Ground Current
  • 0.1µA Shutdown Current
  • Thermal Overload Protection
  • Output Current Limit
  • Tiny 800mW 6-Pin SOT23 Package

Product Details

The MAX1818 low-dropout linear regulator operates from a +2.5V to +5.5V supply and delivers a guaranteed 500mA load current with low 120mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide in the full data sheet) or can be adjusted from 1.25V to 5.0V with an external resistive divider.

An internal PMOS pass transistor allows the low 125µA supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and notebook computers.

Other features include an active-low open-drain reset output that indicates when the output is out of regulation, a 0.1µA shutdown, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 800mW 6-pin SOT23 package.


  • Cell Phones/Cordless Phones
  • Docking Stations
  • Notebook Computers
  • Palmtop Computers
  • PDAs and Other Handheld Devices
  • USB Hubs
  • Wireless Base Stations

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)

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
MAX1818EUT15+ Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT15+T Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT18+T Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT25+ Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT25+T Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT33+ Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT33+T Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT50+ Material Declaration Reliability Data 6-SOT_23-N/A
MAX1818EUT50+T Material Declaration Reliability Data 6-SOT_23-N/A
Wafer Fabrication Data MAX1818 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

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



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