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INTELLIGENT CHARGER
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
FEATURES (OZ864)
- Single battery charger and selector for Dual Battery packs
- 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
FEATURES (OZ8602/8604)
- Replacement for discrete Battery Charge Controller
- 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
FEATURES (OZ8680/81)
- Simplified SMBus control of battery voltage, charge current and adapter input current
- 11-bit DAC battery voltage setting (1.0245V - 19.200V)
- 6-bit DAC charge current setting (128mA - 8.064A)
- 6-bit DAC adapter current setting (256mA - 11.008A)
- Smallest package on market (3 X 3mm) - space-saving 16-pin QFN
- NMOS synchronous topology, fixed frequency, and >95% efficiency
- +0.6% battery voltage, +4% charging current, and +5% adapter current accuracies
- Automatic AC Adapter voltage detection
- Outputs valid adapter presence
- OZ8680: Outputs an alert signal for adapter over-current
- OZ8681: Outputs adapter current/battery discharge current
- Built-in battery over voltage and over-current protection
- Charges batteries of various chemistries, including LiIon with 1 to 4 cells
- Embedded thermal shutdown protection
FEATURES (OZ8618)
- Battery Charge Controller with NMOS system power selector
- NMOS synchronous Buck Converter topology
- Programmable wake-up current and voltage threshold
- High efficiency of (>95%)
- +0.5% constant voltage, +5% charging current, and +5% input current limiting accuracies
- Outputs charging and adapter current information for monitoring
- Analog inputs to program charging current, charging voltage, and adapter current limit
- Dynamic AC adapter current allocation for maximum charging rate
- Built-in adapter under voltage protection
- Built-in battery under voltage/short circuit, over-voltage, and over-current protection
- Built-in protection for operation at low charging current
- Automatic AC Adapter voltage detection
- Easy interface with a microcontroller
- Charges batteries of various chemistries, including LiIon with 2, 3, and 4 cells
FEATURES (OZ8770/1)
- Cool Charge® Adapter Controller
- Supports Intel® AMPS hybrid power topology for LiIon batteries
- Provides 0.7% accuracy in constant voltage (CV) charge mode
- Automatic AC adapter detection
- Analog inputs to program charging current, charging voltage, maximum adapter power, and wake-up threshold
- Dynamic AC adapter power allocation for maximum charge rate
- Power-saving mode available when system is battery powered
- Digital and analog or digital wake-up current function
- Wake-up current internally set
- Battery current information
- Integrated power selector for single battery systems
- Protection for 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
FEATURES (OZ875X)
- Cool Charge® Adapter Controller
- Supports Intel® NVDC-II hybrid power topology
- Analog inputs to program charging current and charging voltage
- Provides 0.7% accuracy in constant voltage charge mode
- Dynamic AC adapter power allocation for maximum charge rate
- Adapter power limitation embedded
- Power-saving mode available when system is battery powered
- Automatic AC adapter detection
- Analog/Digital wake-up current function
- Outputs adapter/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
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