BQ24171

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq24171 SLUSAF2C – FEBRUARY 2011 – REVISED APRIL 2015 bq24171 JEITA-Compliant Stand-Alone, Switched-Mode Li-Ion and Li-Polymer Battery Charger With Integrated MOSFETs and Power Path Selector 1 Features 1 JEITA-Compatible Battery Temperature Sensing 1.6-MHz Synchronous Switched-Mode Charger With 4-A Integrated N-MOSFETs Up to 94% Efficiency 30-V Input Rating With Adjustable Overvoltage Protection – 4.5-V to 17-V Input Operating Voltage Battery Charge Voltage – Adjustable Charge Voltage up to 3-Series Cells High Integration – Automatic Power Path Selector Between Adapter and Battery – Dynamic Power Management – Integrated 20-V Switching MOSFETs – Integrated Bootstrap Diode – Internal Loop Compensation – Internal Digital Soft Start Safety – Thermal Regulation Loop Throttles Back Current to Limit TJ = 120°C – Thermal Shutdown – Battery Thermistor Sense Hot/Cold Charge Suspend and Battery Detect – Input Overvoltage Protection With Programmable Threshold – Cycle-by-Cycle Current Limit Accuracy – ±0.5% Charge Voltage Regulation – ±4% Charge Current Regulation – ±4% Input Current Regulation Less Than 15-μA Battery Current With Adapter Removed Less Than 1.5-mA Input Current With Adapter Present and Charge Disabled Small QFN Package – 24-Pin, 5.5-mm × 3.5-mm QFN Package 2 Applications Tablet PCs Netbooks and Ultra-Mobile Computers Portable Data Capture Terminals Port...