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INTELLIGENT CHARGER
( OZ864,   OZ8602/8604,   OZ8770/1,   OZ875X )

Patented Battery Charger and Cool Charge ICs charge notebook batteries with unmatched efficiency and reliability, operating as a stand-alone charger or under the supervision of the host micro-controller. All chargers provide 0.7% constant voltage operation accuracy, automatic AC adapter voltage detection, and easy interface with a microcontroller.

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BATTERY CHARGERS AND COOL CHARGE ICs

FEATURES (OZ864)
  • Supports fast-charge current
  • Greater than 95% efficiency
  • Provides 0.7% accuracy in constant voltage mode
  • Charges various battery chemistries, including LiIon, NiCd, and NiMH
  • Dual high-side current sensors
  • Dynamic AC adapter current allocation for maximum charge rate
  • User programmable adapter current limit
  • Adapter over-current signal
  • Dedicated pin saves battery power when AC adapter is not connected
  • AC adapter voltage presence signal
  • Built-in protection from AC adapter under voltage, battery under-voltage, over voltage, inrush current, and short circuit fault conditions
  • Wake-up current function when charging deeply discharged batteries
  • AC Adapter voltage detection
  • No notebook battery discharge when using power on commercial aircraft
  • Independent management of the power crisis
  • Easy interface with a microcontroller
  • 32 QFN package, lead-free

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FEATURES (OZ8602/8604)
  • Supports fast-charge current
  • Dynamic AC adapter current allocation for maximum charge rate
  • High efficiency of >94%
  • Provides 0.7% constant voltage operation accuracy
  • Charges various battery chemistries, including LiIon with 2 to 4 cells, NiCd, and NiMH
  • Analog inputs to program charging current and charging voltage
  • Switches automatically to power-saving mode when the AC adapter is not available
  • Powerful driver for PMOS switch
  • Built-in under voltage, over voltage, and short circuit protection
  • 100% maximum switching duty cycle, requiring very low adapter voltage overhead
  • Automatic AC Adapter voltage detection
  • Easy interface with a microcontroller
  • Automatically switches to wake-up current when charging over-discharged batteries or a short circuit is present
  • Internal wake-up current function
  • Outputs adapter current information
  • 16 QFN and SOIC packages, lead-free

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FEATURES (OZ8770/1)
  • Supports Intel® AMPS topology for LiIon batteries
  • Analog inputs to program charging current, charging voltage, maximum adapter power, and wake-up threshold
  • Provides 0.7% accuracy in constant voltage (CV) charge mode
  • Dynamic AC adapter current allocation for maximum charge rate
  • Power-saving mode available when system is battery powered
  • Automatic AC adapter detection
  • Digital or linear wake-up current function
  • Wake-up current internally set to 1/5 or 1/10 from full scale charging current
  • Battery current information
  • Integrated power selector for single battery system
  • Protection for AC adapter detection or adapter wire control connection failure
  • Battery over voltage and over current protection
  • Safely manages power emergencies to assure system power integrity
  • Easy interface with a microcontroller
  • 24 QFN package, lead-free

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FEATURES (OZ875X)
  • Supports Intel® NVDC-II topology
  • Analog inputs to program charging current and charging voltage
  • Provides 0.7% constant voltage operation accuracy
  • Dynamic AC adapter power allocation for maximum charge rate
  • Adapter power limitation embedded
  • Power-saving mode available when system battery powered
  • Automatic AC adapter detection
  • Analog wake-up current function
  • Outputs battery current information
  • Built-in selector for single battery system
  • Assures protection for improper AC adapter detection or control wire connection failure
  • Battery over voltage and over current protection
  • Safely manages power emergencies to assure system power integrity
  • Easy interface with a microcontroller
  • 20 QFN and SSOP packages, lead-free

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