●Description
●The bq2404x series of devices are highly integrated Li-Ion and Li-Pol linear chargers devices targeted at
●space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.
●Features
●• Charging
●– 1% Charge Voltage Accuracy
●– 10% Charge Current Accuracy
●– Pin Selectable USB 100mA and 500mA Maximum Input Current Limit
●– Programmable Termination and Precharge Threshold, bq24040 and bq24045
●– High voltage (4.35V) Chemistry Support with bq24045
●• Protection
●– 30V Input Rating; with 6.6V or 7.1V Input Overvoltage Protection
●– Input Voltage Dynamic Power Management
●– 125°C Thermal Regulation; 150°C Thermal Shutdown Protection
●– OUT Short-Circuit Protection and ISET short detection
●– Operation over JEITA Range via Battery NTC – 1/2 Fast-Charge-Current at Cold, 4.06V at Hot, bq24040 and bq24045
●– Fixed 10 Hour Safety Timer, bq24040 and bq24045
●• System
●– Automatic Termination and Timer Disable Mode (TTDM) for Absent Battery Pack With Thermistor, bq24040 and bq24045
●– Status Indication – Charging/Done
●– Available in Small 2×2mm2 DFN-10 Package
●– Integrated Auto Start Function for Production Line Testing, bq24041
●Applications
●• Smart Phones
●• PDAs
●• MP3 Players
●• Low-Power Handheld Devices
