BQ24273

www.ti.com bq24273 SLUSB08 – JUNE 2012 2.5A, Single Input, Single Cell Switchmode Li-Ion Battery Charger with Integrated Current Sense Check for Samples: bq24273 FEATURES 1 High-Efficiency Switch Mode Charger with Integrated Current Sense Element Single Input Charger – 20V input rating, with 10.5V Over-Voltage Protection (OVP) – Integrated FETs for Up to 2.5A Charge Rate Integrated Charge Current Sense Element for Reduced BOM Count and Board Space Savings Safe and accurate Battery Management Functions – 0.5% Battery Regulation Accuracy – 10% Charge Current Accuracy Voltage-based, NTC Monitoring Input (TS) – JEITA Compatible Thermal Regulation Protection for Output Current Control BAT Short-Circuit Protection Soft-Start Feature to Reduce Inrush Current Thermal Shutdown and Protection Available in Small 49-ball WCSP or QFN-24 Packages APPLICATIONS Handheld Prducts Portable Media Players Portable Equipment Tablets and Portable Internet Devices APPLICATION SCHEMATIC IN SW HOST PMID SDA SCL CD INT BOOT CS+ ` BAT BYP PGND STAT TS DRV TEMP PACK+ PACK- System Load DESCRIPTION The bq24273 is a highly integrated single cell Li-Ion battery charger with integrated charge current sense element device targeted for space-limited, portable applications with high capacity batteries. The single cell charger operates from a dedicated power source such as a wall adapter or wireless power supply for a versatile solution. The integrated sense element elim...