FAN54046 Datasheet | Fairchild Semiconductor

Features - Fully Integrated, High-Efficiency Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs - Power Path Circuit Ensures Fast System Startup with a Dead Battery when VBUS is Connected - 1.55 A Maximum Charge Current - Float Voltage Accuracy: - 0.5% at 25°C - 1% from 0 to 125°C - 5% Input and Charge Current Regulation Accuracy - Temperature-Sense Input Prevents Auto-Charging for JEITA pliance - Thermal Regulation and Shutdown - 4.2 V at 2.3 A Production Test Mode - 5 V, 500 m A Boost Mode for USB OTG - 28 V Absolute Maximum Input Voltage - 6 V Maximum Input Operating Voltage - Programmable through High-Speed I2C Interface (3.4 Mb/s) with Fast Mode Plus patibility - Input Current - Fast-Charge / Termination Current - Float Voltage - Termination Enable - 3 MHz Synchronous Buck PWM Controller with Wide Duty Cycle Range - Small Footprint 1 H External Inductor - Safety Timer with Reset Control - Dynamic Input Voltage Control - Very Low Battery Current when Charger Inactive Applications - Cell Phones, Smart Phones, PDAs - Tablet, Portable Media Players - Gaming Device, Digital Cameras All trademarks are the property of their respective owners. © 2012 Fairchild Semiconductor Corporation FAN54040 - FAN54047 - Rev. 1.0.2 Description The FAN5404X family includes I2C controlled 1.55 A USBpliant switch-mode chargers with power path operation and USB OTG boost operation. Integrated with the charger, the IC supports production test mode, which provides 4.2 V at up to 2.3 A to the system. To facilitate fast system startup, the IC includes a power path circuit, which disconnects the battery from the system rail, ensuring that the system can power up quickly following a VBUS connection. The power path circuit ensures that the system rail stays up when the charger is plugged in, even if the battery is dead or shorted. The charging parameters and operating modes are programmable through an I2C Interface that operates up to 3.4 Mbps. The charger and boost regulator...