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MAX1898
Power Battery Management MAX1898
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MAX1898

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Linear Charger for Single-Cell Li+ Battery

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Product Details

See parametric specs for Battery Chargers

Key Features

See parametric specs for Battery Chargers
Parametric specs for Battery Chargers
Charging VIN (V) (max) 12
Max. ICHG (A) 1.4
Cell Chemistry Li-Ion
Li-Polymer
# Lithium Ion Cells 1
Protected VIN (V) (max) 12
Charger (V) 4.1
4.2
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/10
Budgetary
Price (See Notes) 		1.72
See parametric specs for Battery Chargers
View Less

Simplified Block Diagram

Technical Docs

Data Sheet Linear Charger for Single-Cell Li+ Battery Feb 14, 2002
Tutorial How to Minimize Power Dissipation in Li+ Linear Chargers
Tutorial Switch-Mode, Linear, and Pulse Charging Techniques for Li+ Battery in Mobile Phones and PDAs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.

Parameters

Parametric specs for Battery Chargers
Charging VIN (V) (max) 12
Max. ICHG (A) 1.4
Cell Chemistry Li-Ion
Li-Polymer
# Lithium Ion Cells 1
Protected VIN (V) (max) 12
Charger (V) 4.1
4.2
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/10
Budgetary
Price (See Notes) 		1.72
See parametric specs for Battery Chargers

Key Features

  • 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

    • Applications/Uses

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

    Description

    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.

    Simplified Block Diagram

    MAX1898: Typical Operating Circuit MAX1898: Typical Operating Circuit Zoom icon

    Technical Docs

    Data Sheet Linear Charger for Single-Cell Li+ Battery Feb 14, 2002
    Tutorial How to Minimize Power Dissipation in Li+ Linear Chargers
    Tutorial Switch-Mode, Linear, and Pulse Charging Techniques for Li+ Battery in Mobile Phones and PDAs

    Support & Training

    Search our knowledge base for answers to your technical questions.

    Filtered Search

    Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

    Sampling:
    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.