bq25015

bq25015 bq25017 www.ti.com SLUS721A – DECEMBER 2006 – REVISED MARCH 2007 SINGLE-CHIP CHARGER AND DC/DC CONVERTER IC FOR PORTABLE APPLICATIONS FEATURES Li-Ion Or Li-Pol Charge Management and Synchronous DC-DC Power Conversion In a Single Chip Charges and Powers the System from Either the AC Adapter or USB with Autonomous Power Source Selection Integrated USB Charge Control with Selectable 100 mA and 500 mA Charge Rates Integrated Power FET and Current Sensor for Up to 500 mA Charge Applications AND 300 mA DC-DC Controller with Integrated FETs Reverse Leakage Protection Prevents Battery Drainage Automatic Power Save Mode For High Efficiency at Low Current, or Forced PWM for Frequency Sensitive Applications APPLICATIONS MP3 Players PDAs, Smartphones Digital Cameras DESCRIPTION The bq25015/7 are highly integrated charge and power management devices targeted at space-limited bluetooth applications. The bq25015/7 devices offer integrated power FET and current sensor for charge control, reverse blocking protection, high accuracy current and voltage regulation, charge status, charge termination, and a highly efficient and low-power dc-dc converter in a small package. The bq25015/7 devices charge the battery in three phases: conditioning, constant current and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety feature for charge termination. The bq25015/7 automatically re-starts the charge if the bat...