BQ24150YFFT

完全集成开关模式单节锂离子电池充电器与USB完全遵守和USB -OTG支持 Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support

* 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 * Termination Enable * Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty Cycle * Automatic High Impedance Mode for Low Power Consumption * Safety Timer with Reset Control * Reverse Leakage Protection Prevents Battery Drainage * Thermal Regulation and Protection * Input/Output Overvoltage Protection * Status Output for Charging and Faults * USB Friendly Boot-Up Sequence * Automatic Charging – bq24150 * Automatic High Impedance Mode – bq24151 * Boost Mode Operation for USB OTG: * Input Voltage Range from Battery: 2.5 V to 4.5 V * Output Voltage for VBUS: 5.05 V * 1.976 x 1.946mm 20-Pin WCSP Package * APPLICAONS * Mobile and Smart Phones * MP3 Players * Handheld Devices