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AAT3673 - 1.6A Dynamic Battery Charger and Power Manager

General Description

The AAT3673 BatteryManager is a highly integrated single-cell (4.2V) lithium-ion/polymer battery charger and system power management IC that enables simultaneous battery charging and system load management.

For increased safety, the AAT3673 includes over-voltage input protection (OVP) up to 28V.

Key Features

  • System Load Power Control from Either ADP or Battery.
  • ADP Presence Automatically Routes Power from Source to Load and Charges Battery.
  • Automatic Charge Reduction Loop to Minimize Charge Time with USB Input.
  • 4.0V~6.5V Input Voltage Range.
  • Over-Voltage Input Protection (OVP) up to 28V.
  • Digitally Controlled Thermal Protection.
  • Battery Power Enable.
  • Programmable Battery Charge Timer.
  • Battery Cell Temperature Sensing.

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Full PDF Text Transcription (Reference)

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DATA SHEET AAT3673 1.6A Dynamic Battery Charger and Power Manager General Description The AAT3673 BatteryManager is a highly integrated single-cell (4.2V) lithium-ion/polymer battery charger and system power management IC that enables simultaneous battery charging and system load management. For increased safety, the AAT3673 includes over-voltage input protection (OVP) up to 28V. The AAT3673 provides charging current and system power management from a single input that may be supplied by an AC adapter or USB port power source (ADP). This device allows the user to program the battery charge current up to 1.6A depending on the current shared with the system output. A battery charge timeout timer is provided for charging safety and the charge termination current is also user-programmable.