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ME4086
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.
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 General Description：
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 Features：
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：
Charging Docks
Handheld InstrumenTEMP
Portable Computers
ME4086 Package：
8-pin ESOP8
ME4086 Typical Application Circuit:
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：
product series | product description |
ME4086ASPG | VFLOAT =4.2V(One-cell) |
ME4086ESPG | VFLOAT =12.6V(Three-cell) |
ME4086 Pin Configuration：
ME4086 Pin Assignment：
ME4086 Block Diagram：
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