Description
The ACE4559P series of devices are highly integrated Li-Ion and Li-Pol linear chargers targeted at small capacity battery for portable applications. It is a complete constant-current/ constant voltage linear charger. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. It can deliver up to 150mA of charge current (using a good thermal PCB layout) with a final float voltage accuracy of ±1%. The charge voltage is fixed at 4.2V or 4.35V, and the charge current can be programmed externally with a single resistor. The charger function has high accuracy current and voltage regulation loops and charge termination.

FEATUREs
Charging
● 1% Charge Voltage Accuracy
● 5% Charge Current Accuracy
● Support Application for Very Low Charge Currents – 1mA to 150mA
● Support minimum 0.1mA Charge Termination Current
● 45nA Maximum Battery Output Leakage Current @ 0℃ ~85℃
● High Voltage Chemistry Support: up to 4.35V

Others
● Output Short-Circuit Protection
● Soft-Start Limits Inrush Current
● Charge Status Output Pin
● Automatic Recharge

APPLICATION
● Fitness Accessories
● Smart Watches
● Bluetooth Handsets
● Wireless Low-Power Handheld Devices