BQ24150A

www.ti.com bq24150A bq24151A SLUS931A – APRIL 2009 – REVISED JANUARY 2010 Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support Check for Samples: bq24150A, bq24151A FEATURES 1 2 Charge Faster than Linear Chargers High-Accuracy Voltage and Current Regulation – Input Current Regulation Accuracy: ±5% (100 mA and 500 mA) – Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C to 125°C) – Charge Current Regulation Accuracy: ±5% High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs 20-V Absolute Maximum Input Voltage Rating 6-V Maximum Operating Input Voltage Built-In Input Current Sensing and Limiting Integrated Power FETs for Up To 1.25-A Charge Rate Programmable Charge Parameters through I2C™ Interface (up to 3.4 Mbps): – Input Current – Fast-Charge/Termination Current – Charge Voltage (3.5 V to 4.44 V) – Safety Timer with Reset Control – Termination Enable Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty Cycle Robust Protection – Reverse Leakage Protection Prevents Battery Drainage – Thermal Regulation and Protection – Input/Output Overvoltage Protection Status Output for Charging and Faults Automatic High Impedance Mode for Low Power Consumption USB Friendly Boot-Up Sequence Automatic Charging – bq24150A Automatic High Impedance Mode – bq24151A Boost Mode Operation for USB OTG: – Input Voltage Range (from Battery): 2.5 ...