INTELLIGENT CHARGERS
Patented Battery Chargers and Chargers with Hybrid Power Boost 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 CHARGER APPLICATIONS
FEATURES (OZ8618)
- Battery Charge Controller with NMOS system power selector
- High efficiency of >95%
- Dynamic AC adapter current allocation for maximum charging rate
- Protection includes built-in:
- — Adapter and battery under-voltage
- — Battery short circuit, over-voltage, and over-current
- — Protection for operation at low charging current
- Automatic AC Adapter voltage detection
- Charges batteries of various chemistries, including Li-Ion with 2, 3, and 4 cells
FEATURES (OZ8681)
- Simplified SMBus control of battery voltage, charge current and adapter input current
- Smallest package on market (3 X 3mm) - space-saving 16-pin QFN
- Automatic AC Adapter voltage detection
- Outputs valid adapter presence
- Protection includes built-in:
- — Battery over-voltage and over-current
- — Over-current and reverse connection
- — Embedded thermal shutdown
- Charges batteries of various chemistries, including LiIon with 1 to 4 cells
FEATURES (OZ8660)
- Highly integrated, high accuracy, single battery charge controller
- High efficiency of >94%
- Outputs adapter and battery charge/discharge current information for monitoring
- Battery reverse connection protection
- Protection includes built-in:
- — Adapter under-voltage
- — Battery under-voltage, over-voltage, short circuit and over-current
- — Protection for operation at low charging current
- — Over-temperature shutdown
- Dynamic AC adapter current allocation for maximum charging rate
- Automatic AC Adapter voltage detection
- Charges batteries of various chemistries, including Li-Ion with 2, 3 and 4 cells
FEATURES (OZ8555, OZ8556)
- High accuracy, switch mode 1 cell Li-Ion charger/boost controller with integrated MOSFETs
- Boost over-current protection
- Adapter current sensing with programmable adapter current limit
- Dynamic current allocation
- Over-temperature protection
- Thermistor sensing input
CHARGER WITH HYBRID POWER BOOST APPLICATIONS
FEATURES (OZ8690, OZ8682)
- Highly integrated, high accuracy, single battery charge controller
- Hybrid Power Boost feature allowing battery to provide power in parallel with the AC adapter
- High efficiency of >95%
- Simplified SMBus control of battery voltage, charge current and adapter input current
- Outputs adapter and battery current information
- Protection includes built-in:
- — Battery over-voltage and over-current
- — Adapter under-voltage and over-voltage
- Embedded thermal shutdown protection