MAX1645

Advanced-Chemistry-Independent, Level-2 Battery Chargers with Input Current Limiting

SMBus™ Controlled, Chemistry Independent Smart Battery Charger with Input Current Limiting and Safety Timer

Data Sheet (Rev. 2)
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Part Details

  • Input Current Limiting
  • 175sec Charge Safety Timeout
  • 128mA Wake-Up Charge
  • Charges Any Chemistry Battery: Li+, NiCd, NiMH, Lead Acid, etc.
  • Intel SMBus 2-Wire Serial Interface
  • Compliant with Level 2 Smart Battery Charger Spec. Rev. 1.0
  • +8V to +28V Input Voltage Range
  • Up to 18.4V Battery Voltage
  • 11-Bit Battery Voltage Setting
  • ±0.8% Output Voltage Accuracy with Internal Reference
  • 3A max Battery Charge Current
  • 6-Bit Charge Current Setting
  • 99.99% max Duty Cycle for Low-Dropout Operation
  • Load/Source Switchover Drivers
  • >97% Efficiency
MAX1645
Advanced-Chemistry-Independent, Level-2 Battery Chargers with Input Current Limiting
MAX1645, MAX1645A: Typical Operating Circuit
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Documentation

Data Sheet 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Switching Battery Chargers 1
MAX1647
PRODUCTION Chemistry-Independent Battery Chargers
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Evaluation Kits

MAX1645BEVKIT

Evaluation Kit/Evaluation System for the MAX1645B

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Features and Benefits

  • Charges Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
  • SMBus-Compatible 2-Wire Serial Interface
  • 3A (max) Battery Charge Current
  • Up to 18.4V Battery Voltage
  • Up to +28V Input Voltage
  • Easy-to-Use Software Included
  • Proven PC Board Layout
  • Fully Assembled and Tested Surface-Mount Board

Product Details

The MAX1645B evaluation kit (EV kit) is an efficient, multichemistry battery charger. It uses the Intel® System Management Bus (SMBus™) to control the battery regulation voltage, charger current output, and input current- limit set point.

The MAX1645B EV kit can charge one, two, three, or four series Li+ cells with a current up to 3A.

The MAX1645B evaluation system (EV system) consists of a MAX1645B EV kit and the Maxim SMBUSMON board. The MAX1645B EV kit includes Windows® 95/98/2000/XP-compatible software to provide a user-friendly interface.

Applications

  • Notebook Computers
  • PDAs and Other Handheld Devices
  • Point-of-Sale Terminals
MAX1645BEVKIT
Evaluation Kit/Evaluation System for the MAX1645B

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