BQ24109

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq24100, bq24103, bq24103A, bq24104, bq24105 bq24108, bq24109, bq24113, bq24113A, bq24115 SLUS606P – JUNE 2004 – REVISED NOVEMBER 2015 bq241xx Synchronous Switched-Mode, Li-Ion and Li-Polymer Charge-Management IC With Integrated Power FETs (bqSWITCHER™) 1 Features 1 Ideal For Highly Efficient Charger Designs For Single-, Two-, or Three-Cell Li-Ion and Li-Polymer Battery Packs bq24105 Also for LiFePO4 Battery (see Using bq24105 to Charge the LiFePO4 Battery) Integrated Synchronous Fixed-Frequency PWM Controller Operating at 1.1 MHz With 0% to 100% Duty Cycle Integrated Power FETs for Up To 2-A Charge Rate High-Accuracy Voltage and Current Regulation Available in Both Stand-Alone (Built-In Charge Management and Control) and System-Controlled (Under System Command) Versions Status Outputs for LED or Host Processor Interface Indicates Charge-In-Progress, Charge Completion, Fault, and AC-Adapter Present Conditions 20-V Maximum Voltage Rating on IN and OUT Pins High-Side Battery Current Sensing Battery Temperature Monitoring Automatic Sleep Mode for Low Power Consumption System-Controlled Version Can Be Used in NiMH and NiCd Applications Reverse Leakage Protection Prevents Battery Drainage Thermal Shutdown and Protection Built-In Battery Detection Available in 20-Pin, 3.50 mm × 4.50 mm VQFN Package 2 Applications Handheld Products Portable Media Players I...