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ME4069
ME4069 is a lithium battery charge management chip with constant current and constant voltage charging mode. A single (4.2V) lithium battery can be charged quickly and efficiently. The current mode PWM step-down switch control structure provides a small, simple and efficient solution for fast charging of lithium batteries.
ME4069 built-in anti-backflow function, so the practical application does not require the input end diode anti-backflow. The system cost is greatly reduced. The chip has built-in overvoltage protection function. When the VIN voltage of the chip exceeds 6V, the chip shuts down, and the VIN end of the chip can withstand 6V.
The ME4069 uses an external Sense resistor to set a highly accurate charge current, and an internal divider resistor and a precise reference voltage to set the battery's floating charge voltage at 4.2V with an accuracy of up to ±1%. When the input power is removed, the chip automatically enters low-current sleep mode, and the battery leakage current is as low as 1μA. When the charging cycle is over, if the voltage of a single battery drops to 4.1V, the chip will automatically re-charge the battery.
ME4069 built-in anti-backflow function, so the practical application does not require the input end diode anti-backflow. The system cost is greatly reduced. The chip has built-in overvoltage protection function. When the VIN voltage of the chip exceeds 6V, the chip shuts down, and the VIN end of the chip can withstand 6V.
The ME4069 uses an external Sense resistor to set a highly accurate charge current, and an internal divider resistor and a precise reference voltage to set the battery's floating charge voltage at 4.2V with an accuracy of up to ±1%. When the input power is removed, the chip automatically enters low-current sleep mode, and the battery leakage current is as low as 1μA. When the charging cycle is over, if the voltage of a single battery drops to 4.1V, the chip will automatically re-charge the battery.
ME4069 Description:
ME4069 is a lithium battery charge management chip with constant current and constant voltage charging mode. A single (4.2V) lithium battery can be charged quickly and efficiently. The current mode PWM step-down switch control structure provides a small, simple and efficient solution for fast charging of lithium batteries.
ME4069 built-in anti-backflow function, so the practical application does not require the input end diode anti-backflow. The system cost is greatly reduced. The chip has built-in overvoltage protection function. When the VIN voltage of the chip exceeds 6V, the chip shuts down, and the VIN end of the chip can withstand 6V.
The ME4069 uses an external Sense resistor to set a highly accurate charge current, and an internal divider resistor and a precise reference voltage to set the battery's floating charge voltage at 4.2V with an accuracy of up to ±1%. When the input power is removed, the chip automatically enters low-current sleep mode, and the battery leakage current is as low as 1μA. When the charging cycle is over, if the voltage of a single battery drops to 4.1V, the chip will automatically re-charge the battery.
ME4069 built-in anti-backflow function, so the practical application does not require the input end diode anti-backflow. The system cost is greatly reduced. The chip has built-in overvoltage protection function. When the VIN voltage of the chip exceeds 6V, the chip shuts down, and the VIN end of the chip can withstand 6V.
The ME4069 uses an external Sense resistor to set a highly accurate charge current, and an internal divider resistor and a precise reference voltage to set the battery's floating charge voltage at 4.2V with an accuracy of up to ±1%. When the input power is removed, the chip automatically enters low-current sleep mode, and the battery leakage current is as low as 1μA. When the charging cycle is over, if the voltage of a single battery drops to 4.1V, the chip will automatically re-charge the battery.
ME4069 Features:
Input voltage operating range: 4.7V~5.5V
Built-in anti-backfilling function
Built-in overvoltage protection, overvoltage protection voltage value 6V.
Built-in soft start to prevent large current overshoot at the moment of power-on
High efficiency current mode PWM step-down switch control structure
Current detection output at the end of charging
A fixed switching frequency is used to ensure minimum noise
±1% charging voltage (4.2V) accuracy
Automatic recharge
When the input power is removed, the system automatically enters hibernation mode
When the battery voltage is low, it automatically enters trickle charging mode
Low ESR ceramic capacitor output stability
Battery temperature detection
Built-in anti-backfilling function
Built-in overvoltage protection, overvoltage protection voltage value 6V.
Built-in soft start to prevent large current overshoot at the moment of power-on
High efficiency current mode PWM step-down switch control structure
Current detection output at the end of charging
A fixed switching frequency is used to ensure minimum noise
±1% charging voltage (4.2V) accuracy
Automatic recharge
When the input power is removed, the system automatically enters hibernation mode
When the battery voltage is low, it automatically enters trickle charging mode
Low ESR ceramic capacitor output stability
Battery temperature detection
ME4069 Applications:
Charging equipment
Portable laptop
Handheld device
Portable laptop
Handheld device
ME4069 package form:
8-pin ESOP8
Typical application diagram of ME4069:
ME4069 Purchase Guide:
Product model | Product description |
ME4069ASPG | VFLOAT =4.2V；Encapsulation form：ESOP8 |
ME4069 foot position function description:
ME4069 chip function diagram:
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