BQ24040 Datasheet PDF - TI

●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