FAN54010中文资料USB-Compliant Single Cell Li-Ion Switching Charger with USB-OTG Boost Regulator数据手册ONSEMI规格书

描述 Description

The FAN54010 family (FAN5401X) 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.
The charging parameters and operating modes are programmable through an I'C Interface that operates up to 3.4 Mbps. The charger and boost regulator circuits switch at 3MHz to minimize the size of external passive components.
The FAN5401X provides battery charging in three phases: conditioning, constant current, and constant voltage.
To ensure USB compliance and minimize charging time, the input current is limited to the value set through the IFC host.Charge termination is detemined by a programmable minimum current level.A safety timer with reset control provides a safety backup for the IFC host.
The integrated circuit(IC) automatically restarts the charge cycle when the battery falls below an internal threshold. If the input source is removed, the IC enters a high-impedance mode with leakage from the battery to the input prevented.Charge status is reported back to the host through the Ic port. Charge current is reduced when the die temperature reaches 120℃.
The FAN5401X can operate as a boost regulator on command from the system. The boost regulator includes a soft-start that limits inrush current from the battery.
The FAN5401X is available in a 1.96x1.87 mm,20-bump,0.4 mm pitch, WLCSP package.

特性 Features

• 用于单体锂离子和锂聚合物电池组的全集成高效充电器
• 比线性充电器的充电速度更快
• 充电电压精度：
• ±5%输入电流调节精度
• ±5%充电电流调节精度
• 20V绝对最大输入电压
• 6V最大输入工作电压
• 1.25A最大充电速度
• 可通过具有快速模式及其兼容性的高速I2C接口(3.4Mb/s)进行编程
• 占空周期范围宽的3MHz同步降压PWM控制器
• 小尺寸1µH外部电感
• 带复位控制功能的安全定时器
• 辅助电路的1.8V VBUS稳压输出
• 由下降的充电电流调节来保持最小VBUS电压的弱输入源
• 防止电池漏电至VBUS的反向小漏电流
• 5V，300mA的升压模式，用于USB OTG的2.5到4.5V的电池输入

应用 Application

TBA