描述 Description

The FAN54010 family (FAN5401X) combines a highly integrated switch-mode charger, to minimize single-cell Lithiumion (Li-ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery.

特性 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

■ 20V Absolute Maximum Input Voltage

■ 6V Maximum Input Operating Voltage

■ 1.45A Maximum Charge Rate

■ Programmable through High-Speed I2C Interface (3.4Mb/s) with Fast Mode Plus Compatibility

– Input Current

– Fast-Charge / Termination Current

– Charger Voltage

– Termination Enable

■ 3MHz Synchronous Buck PWM Controller with Wide Duty Cycle Range

■ Small Footprint 1μH External Inductor

■ Safety Timer with Reset Control

■ 1.8V Regulated Output from VBUS for Auxiliary Circuits

■ Weak Input Sources Accommodated by Reducing Charging Current to Maintain Minimum VBUS Voltage

■ Low Reverse Leakage to Prevent Battery Drain to VBUS

■ 5V, 500mA Boost Mode for USB OTG for 3.0 to 4.5V Battery Input

Applications

■ Cell Phones, Smart Phones, PDAs

■ Tablet, Portable Media Players

■ Gaming Device, Digital Cameras