bq24352

bq24350 bq24352 www.ti.com............................................................................................................................................................... SLUS943A – MAY 2009 – REVISED JUNE 2009 Over-Voltage and Over-Current Charger Front-end Protection IC With Integrated Charging FET Check for Samples: bq24350 bq24352 FEATURES 1 2 Robust Protection – Input Over-Voltage Protection – Input Over-Current Protection – Accurate Battery Over-Voltage Protection – Thermal Shutdown – Output Short-Circuit Protection Integrated Charging FET LDO Mode Operation Current Limited Power Supply for Host Controller Soft-Start to Prevent Inrush Currents Soft-Stop to Prevent Voltage Spikes 30V Maximum Input Voltage Supports Up to 1A Load Current Small 2mm × 2mm 8pin SON Package APPLICATIONS Mobile Phones Low-Power Handheld Devices DESCRIPTION The bq24350/2 is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage and the battery voltage. In case of an input over-voltage condition, the IC will turn off the internal power FET after a blanking time. If the battery voltage rises to unsafe levels during charging process, power is removed from the system. If the input current exceeds the over current threshold for a limited time, the IC will turn off the output power. The integrated charging FET can regulate the charge voltage and current a...