深圳市谷科智电子有限公司

Ap5056 is a complete single-chip lithium-ion battery constant current / constant voltage linear power 

management chip. Its SOP / MSOP package and few peripheral components are very suitable for portable

products, and IT is specially designed for USB power supply specifications. Based on the internal 

MOSFET structure, there is no need for external inductive resistance and isolation diode. When the external

temperature is too high or working at high power, the thermal feedback can adjust the charging current to 

reduce the chip temperature. The charging voltage is fixed at 4.2V and the charging current can be set 

through an external resistor. When the charging current drops to 1 / 10 of the set value after reaching 

the final floating charge voltage, it will automatically terminate the charging cycle.

When the input end (adapter or USB power supply) is removed, ap5056 will automatically enter the low

 current state, and the battery leakage current will drop to less than 0.5ua. The ap5056 can also be set to

 the shutdown state to reduce the power supply current to 50ua.

Other features include: battery temperature monitoring, undervoltage locking, automatic recharging and two

 status pins to indicate charging and charging termination.

AP5056是一个完整的单片锂离子电池恒流/恒压线性电源管理芯片,其SOP/MSOP封装和极少的外围元件非常适合

应用于便携式产品，而且它专门设计适用于USB的供电规格。基于内部 MOSFET结构，不需要外部感应电阻

和隔离二极管，当外部环境温度过高或在大功率工作时，热反馈可以调节充电电流以降低芯片温度。充电电压被

固定在4.2V，充电电流可通过外部电阻设置。当充电电流在达到浮充电压之后降至设定值1/10 时，它将自动终止充电循环。

当输入端（适配器或USB电源）拔掉后，AP5056自动进入低电流状态，电池漏电流将降到0.5uA以下。AP5056

还可被设置于停机状态，使电源电流降到50uA。
其余特性包括:电池温度监测，欠压锁闭，自动再充电和两个状态引脚以显示充电和充电终止。