BQ24140

bq24140 www.ti.com SLUSAO5 – OCTOBER 2011 Fully Integrated Dual-Input Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support Check for Samples: bq24140 FEATURES 1 High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs Charge Battery and Provide USB-OTG Support at the Same Time High-Accuracy Voltage and Current Regulation – Input Current Regulation Accuracy: ±5% (100mA, 500mA) – Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0-125°C) – Charge Current Regulation Accuracy: ±5% Boost Mode Operation for USB OTG: – Input Voltage Range (from Battery): 2.3V to 4.5V – Output for VBUS: 5.05V/500 mA Input Voltage Based Dynamic Power Management Provides Protection Against Current Limited Adapters Bad Adaptor Detection and Rejection Safety Limit Register for Added Security by Limiting Maximum Charge Voltage and Maximum Charge Current 20-V Absolute Maximum Input Voltage Rating 9.0-V Maximum Operating Input Voltage Charge Faster than Linear Chargers Built-in Input Current Sensing and Limiting Integrated Power FETs for up to 1.5-A Charge Rate Programmable Charge Parameters Through I2C Interface (up to 3.4 Mbps): – Input Current – Fast-Charge/Termination Current – Charge Voltage (3.5-4.44V) – Safety Timer with Reset Control – Safety Timer with Reset Control – Termination Enable Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty Cycle Automatic High I...