Description
   The FAN54015 combines a highly integrated switch−mode charger, to minimize single−cell Lithium−ion (Li−ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery.

FEATUREs
• Fully Integrated, High−Efficiency Charger for Single−Cell Li−Ion
   and Li−Polymer Battery Packs
• Faster Charging than Linear
• Charge Voltage Accuracy: +0.5% at 25°C
                                            +1% from 0 to 125°C
• +5% Input Current Regulation Accuracy
• +5% Charge Current Regulation Accuracy
• 20 V Absolute Maximum Input Voltage
• 6 V Maximum Input Operating Voltage
• 1.45 A Maximum Charge Rate
• Programmable through High−Speed I2C Interface (3.4 Mb/s) with
   Fast Mode Plus Compatibility
   ✦ Input Current
   ✦ Fast−Charge / Termination Current
   ✦ Charger Voltage
   ✦ Termination Enable
• 3 MHz Synchronous Buck PWM Controller
   with Wide Duty Cycle Range
• Small Footprint 1 mH External Inductor
• Safety Timer with Reset Control
• 1.8 V Regulated Output from VBUS for
   Auxiliary Circuits
• Dynamic Input Voltage Control
• Low Reverse Leakage to Prevent Battery
   Drain to VBUS
• 5 V, 500 mA Boost Mode for USB OTG for
   3.0 V to 4.5 V Battery Input
• Available in a 1.96 x 1.87 mm, 20−bump,
   0.4 mm Pitch WLCSP Package
• These are Pb−Free Devices

APPLICATIONs
• Cell Phones, Smart Phones, PDAs
• Tablet, Portable Media Players
• Gaming Device, Digital Cameras