HARGING– 1%_Charge Voltage Accuracy– 10%_Charge Current Accuracy– Pin Selectable USB 100mA and_500mAMaximum Input Current Limit– Programmable Termination and_PrechargeThreshold, bq24040PROTECTION– 30V Input Rating;_with 6.6V or 7.1V InputOvervoltage Protection– Input Voltage Dynamic Power Management– 125° C Thermal Regulation;_150°C ThermalShutdown Protection– OUT Short-Circuit Protection and_ISETshort detection– Operation over JEITA Range via BatteryNTC – 1/2 Fast-Charge-Current at Cold, 4.06V at Hot, bq24040???– Fixed 10 Hour Safety TimerSYSTEM– Automatic Termination and_Timer DisableMode (TTDM) for Absent Battery Pack WithThermistor, bq24040– Status Indication – Charging/Done– Available in Small 2×2mm2DFN-10 Package– Integrated Auto Start Function for Production Line Testing, bq24041APPLICATIONS????Smart PhonesPDAsMP3 PlayersLow -Power Handheld DevicesDESCRIPTIONThe bq2404x series of devices are highly integrated Li-ion linear chargers devices targeted at space-limitedportable applicati ons. The devices operate from either a USB port or AC adapter. The high input rangewith input overvoltage protection supports low-cost unregulated adapters.The bq2404x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hoursafety timer. The battery is charged in three phases: conditioning, constant current and_constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and_reduces the charge current if an internal temperature threshold is exceeded