BQ24105-Q1

bq24105-Q1 www.ti.com SLUS953A – AUGUST 2009 – REVISED APRIL 2012 SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POLYMER CHARGE-MANAGEMENT IC WITH INTEGRATED POWER FETs ( bqSWITCHER™) Check for Samples: bq24105-Q1 FEATURES 1 23 Qualified for Automotive Applications Ideal For Highly Efficient Charger Designs For Single-, Two-, or Three-Cell Li-Ion and LiPolymer Battery Packs Also for LiFePO4 Battery (see Using bq24105 to Charge 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 Stand-Alone (Built-In Charge Management and Control) Version 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 Reverse Leakage Protection Prevents Battery Drainage Thermal Shutdown and Protection Built-In Battery Detection Available in 20-Pin, 3.5 mm × 4.5 mm, QFN Package DESCRIPTION The bqSWITCHER™ series are highly integrated Liion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge pre...