The ME4086 is a complete battery charger controller for one (4.2V) or three (12.6V) cell lithium-ion battery. The ME4086 provides a small, simple and efficient solution to fast charge Li-ion battery. The ME4086 built in anti current backward function, so the application does not need the blocking diode. An external sense resistor sets the charge current with high accuracy.

    An internal resistor divider and precision reference set the final float voltage to one (4.2V) or three (12.6V) cell with ±1% accuracy. When the input supply is removed, the ME4086 automatically enters a low current sleep mode, dropping the battery drain current to 3μA.After the charge cycle ends, If the battery voltage drops below one (4.1V) or three (12.2V) cell, a new charge cycle will automatically begin.

    ME4086是一款适用于单电池（4.2V）或三电池（12.6V）锂离子电池的完整电池充电器控制器。ME4086为锂离子电池的快速充电提供了一种小型、简单、高效的解决方案。ME4086内置反电流反向功能，因此应用不需要阻塞二极管。外部感测电阻器以高精度设置充电电流。

    内部电阻分压器和精度基准将最终浮动电压设置为一个（4.2V）或三个（12.6V）单元，精度为±1%。当输入电源断开时，ME4086自动进入低电流睡眠模式，将电池漏电流降至3μa。充电周期结束后，如果电池电压降至一个（4.1V）或三个（12.2V）电池以下，将自动开始新的充电周期。 

ME4086 Features（特性）：

Input Supply Range：

  One-cell：4.7V~16V

  Three-cell：14V~22V

Maximum input voltage：24V

Built in anti current backward function

High Efficiency Current Mode PWM Controller 

Built-in input adaptive function

Constant Switching Frequency for Minimum Noise

±1% charge voltage accuracy

Automatic Recharge

Automatic Shutdown When Input Supply is Removed

Automatic Trickle Charging of Low Voltage

Stable with Ceramic Output Capacitor

Battery Temperature Sensing

ME4086 Applications（应用）：

Charging Docks 

Handheld InstrumenTEMP

Portable Computers

ME4086 Package（封装形式）：

8-pin ESOP8

ME4086 Typical Application Circuit（典型应用电路）:

Note: 1.The dotted part of the box is the input capacitor. When the input voltage is lower than 9V, ceramic capacitor 

can be selected. When the input voltage is higher than 9V, an electrolytic capacitor over 100uF should be added into 

the input. The larger the charging power, the larger the capacity of electrolytic capacitor.

 2. For the hot-swappable application at the BAT pin, it is also necessary to add electrolytic capacitors, it is 

recommended to be 220uF or more.

Note: 1.The Rc and Cc value range of SW to GND, Rc: 0.5 Ω ~ 20 Ω, Cc: 1 nF ~ 100 nF.

 2. For the hot-swappable application at the BAT pin, it is also necessary to add electrolytic capacitors, it is 

recommended to be 220uF or more.

ME4086 Selection Guide(选购指南)：

product series	product description
ME4086ASPG	VFLOAT =4.2V(One-cell)
ME4086ESPG	VFLOAT =12.6V(Three-cell)

ME4086 Pin Configuration（引脚配置）：

ME4086 Pin Assignment（引脚分配）：

ME4086 Block Diagram（功能框图）：