BQ24040 TI 锂电池 电源管理芯片.pdf

bq24040 bq24041 SLUS941A – SEPTEMBER 2009– REVISED SEPTEMBER 2009 800mA, Single-Input, Single Cell Li-Ion Battery Charger With Auto Start Check for Samples: bq24040 bq24041 1 FEATURES – Fixed 10 Hour Safety Timer • CHARGING • SYSTEM – 1% Charge Voltage Accuracy – Automatic Termination and Timer Disable – 10% Charge Current Accuracy Mode (TTDM) for Absent Battery Pack With – Pin Selectable USB 100mA and 500mA Thermistor, bq24040 Maximum Input Current Limit – Status Indication – Charging/Done – Programmable Termination and Precharge – Available in Small 2×2mm2 DFN-10 Package Threshold, bq24040 – Integrated Auto Start Function for • PROTECTION Production Line Testing, bq24041 – 30V Input Rating; with 6.6V or 7.1V Input APPLICATIONS Overvoltage Protection