BQ24120

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design bq24120, bq24123, bq24125 SLUS688H – MARCH 2006 – REVISED NOVEMBER 2015 bq2412x Single-Chip Switched-Mode, Li-Ion, and Li-Polymer Charge-Management IC With Enhanced EMI Performance (bqSWITCHER™) 1 Features 1 Enhanced EMI Performance Integrated Power FETs For Up To 2-A Charge Rate Suitable For 1-, 2-, or 3-Cell Li-Ion and Li-Polymer Battery Packs Synchronous Fixed-Frequency PWM Controller Operating at 1.1 MHz With 0% to 100% Duty Cycle High-Accuracy Voltage and Current Regulation Status Outputs For LED or Host Processor Interface Indicates Charge-In-Progress, Charge Completion, Fault, and AC-Adapter Present Conditions 20-V Absolute Maximum Voltage Rating on IN and OUT Pins Accurate 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 VQFN Package 2 Applications Handheld Products Portable Media Players Industrial and Medical Equipment Portable Equipment Portable DVD Players 3 Description The bqSWITCHER™ series are highly integrated Liion and Li-polymer switched-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-...