1. Products
  2. Power Management
  3. Battery Management
  4. Battery Charger IC
  5. Linear Battery Chargers
  6. MAX1898


Features and Benefits

  • Simple, Safe Linear Charger
  • Uses Low-Cost PNP or PMOS Pass Element
  • 4.5V to 12V Input Range
  • Internal Current-Sense Resistor
  • ±0.75% Voltage Accuracy
  • Programmable Charging Current
  • Automatic Input Power-Source Detection
  • LED Charge Status Indicator
  • Programmable Safety Timer
  • Current-Sense Monitor Output
  • Optional/Adjustable Auto-Restart
  • Small µMAX Package
  • Product Details

    The MAX1898, with an external PNP or PMOS transistor, forms a complete charger for 1-cell lithium-ion (Li+) batteries. The MAX1898 provides accurate constant-current/constant-voltage charging. Battery regulation voltage accuracy is ±0.75% for optimum battery performance and cycle life. Charging current is user set, but is sensed internally so no external current-sense resistor is needed. The MAX1898 also provides outputs to monitor charge status, presence-of-input power source, and charge current. Additional features include shutdown, optional charge-cycle restart without input-power cycling, selectable charge termination safety timer, and low-current preconditioning for deeply discharged cells.

    The MAX1898 offers the maximum integration and functionality in the smallest, most basic application circuit possible. Very few external components are required.

    The MAX1898 offers two versions to safely charge all Li+ battery chemistries. The battery regulation voltage is 4.2V for the MAX1898EUB42 and 4.1V for the MAX1898EUB41. Both are available in a 10-pin ultra-thin µMAX package.


    • Cell Phones
    • Cradle Chargers
    • PDAs
    • Self-Charging Battery Packs
    • Single-Cell Li+ Powered Portables

    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
    MAX1898EUB41+ Material Declaration Reliability Data 10-MINI_SO-N/A
    MAX1898EUB41+T Material Declaration Reliability Data 10-MINI_SO-N/A
    MAX1898EUB42+ Material Declaration Reliability Data 10-MINI_SO-N/A
    MAX1898EUB42+T Material Declaration Reliability Data 10-MINI_SO-N/A
    Wafer Fabrication Data

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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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