MAX1908
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MAX1908

Low-Cost Multichemistry Battery Chargers

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Low-Cost, Highly Integrated, Multichemistry Battery-Charger Control ICs Simplify the Construction of Accurate and Efficient Chargers

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Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $4.64
Features
  • ±0.5% Output Voltage Accuracy Using Internal Reference (±0.4% for MAX8765A, 2-/3-Cell Only)
  • ±4% Accurate Input Current Limiting
  • ±5% Accurate Charge Current
  • Analog Inputs Control Charge Current and Charge Voltage
  • Outputs for Monitoring
    • Current Drawn from AC Adapter
    • Charging Current
    • AC Adapter Presence
  • Up to 17.6V Battery-Voltage Set Point
  • Maximum 28V Input Voltage
  • > 95% Efficiency
  • Shutdown Control Input
  • Charge Any Battery Chemistry
    • Li+, NiCd, NiMH, Lead Acid, etc.
Additional Details
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The MAX1908/MAX8724/MAX8765/MAX8765A highly integrated, multichemistry battery-charger control ICs simplify the construction of accurate and efficient chargers. These devices use analog inputs to control charge current and voltage, and can be programmed by the host or hardwired. The MAX1908/MAX8724/MAX8765/MAX8765A achieve high efficiency using a buck topology with synchronous rectification.

The MAX1908/MAX8724/MAX8765/MAX8765A feature input current limiting. This feature reduces battery charge current when the input current limit is reached to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. The MAX1908/MAX8724/MAX8765/MAX8765A provide outputs to monitor current drawn from the AC adapter (DC input source), battery-charging current, and the presence of an AC adapter. The MAX1908's conditioning charge feature provides 300mA to safely charge deeply discharged lithium-ion (Li+) battery packs.

The MAX1908 includes a conditioning charge feature while the MAX8724/MAX8765/MAX8765A do not.

The MAX1908/MAX8724/MAX8765/MAX8765A charge two to four series Li+ cells, providing more than 5A, and are available in a space-saving, 28-pin, thin QFN package (5mm x 5mm). An evaluation kit is available to speed designs.

Applications

  • Handheld Terminals
  • Notebook and Subnotebook Computers
  • Personal Digital Assistants (PDAs)
Part Models 2
1ku List Price Starting From $4.64

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX1908ETI+
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MAX1908ETI+T
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Product Lifecycle

PCN

Jun 20, 2016

- 1612

ASSEMBLY

MAX1908ETI+

PRODUCTION

MAX1908ETI+T

PRODUCTION

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Product Lifecycle

PCN

Jun 20, 2016

- 1612

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ASSEMBLY

MAX1908ETI+

PRODUCTION

MAX1908ETI+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX8724EVKIT

Evaluation Kit for the MAX8724

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MAX8724EVKIT

Evaluation Kit for the MAX8724

Evaluation Kit for the MAX8724

Features and Benefits

  • Input Current Limiting
  • ±0.5% Battery-Voltage Set-Point Accuracy Using Internal Reference
  • Analog Inputs Control Charge Current and Battery-Voltage Set Point
  • Monitor Outputs for
    Current Drawn from AC Input Source
    Charging Current
    AC Adapter Presence
  • Up to 17.6V Battery-Voltage Set Point
  • +8V to +25V Input Voltage
  • 3A Battery Charge Current
  • Charges Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
  • Surface-Mount Construction
  • Fully Assembled and Tested
  • Product Detail

    The MAX8724 evaluation kit (EV kit) is an accurate and efficient multichemistry battery charger. It uses analog inputs to control charge voltage and current. The EV kit can charge 2 to 4 series lithium-ion (Li+) cells with a current up to 3A. High efficiency is achieved by a buck topology with synchronous rectification. The EV kit provides outputs that can be used to monitor the input current, the battery-charging current, and the presence of an AC adapter.

    Applications

    • Handheld Terminals
    • Notebook and Subnotebook Computers
    • Personal Digital Assistants (PDAs)

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