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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.
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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