你好！这是个有趣的问题。一般来说，电荷泵用于设置参考电压或用作电平移位器，它们不用于驱动负载，因此电荷泵不被用作电流驱动器。当你不断地从负载电容中汲取电流时，电源（在我们的情况下，SIO）应该能够将电容器充电回到你需要的电压。由于电流源（实际的SiO引脚）现在只提供了一半的时间，所以可以近似在SIO上建立的电荷泵的容量大约为12Ma。事实上，它甚至小于12Ma。
不要烦恼！！！！如果需要额外的电流，可以在连接器中连接更多的引脚。
以上来自于百度翻译
以下为原文
Hello there ! Thats an interesting question. Generally chargepumps are used to set reference voltages or used as level shifters and they are not used drive loads and hence it is not use case of charge pump to be used as current drive. As you keep drawing current from the load capacitor, the source(in our case SIO) should be capable of charging the capacitor back to maintian your required voltage. You could approximate the current capability of the charge pump built on the SIO to be about 12mA, since the current source(actual SIO pin) is now available for only half the time. Actually its even lesser than 12mA.
Fret not !!! If you need additional current, you can connect more number of Pins in paralle.
你好！这是个有趣的问题。一般来说，电荷泵用于设置参考电压或用作电平移位器，它们不用于驱动负载，因此电荷泵不被用作电流驱动器。当你不断地从负载电容中汲取电流时，电源（在我们的情况下，SIO）应该能够将电容器充电回到你需要的电压。由于电流源（实际的SiO引脚）现在只提供了一半的时间，所以可以近似在SIO上建立的电荷泵的容量大约为12Ma。事实上，它甚至小于12Ma。
不要烦恼！！！！如果需要额外的电流，可以在连接器中连接更多的引脚。
以上来自于百度翻译
以下为原文
Hello there ! Thats an interesting question. Generally chargepumps are used to set reference voltages or used as level shifters and they are not used drive loads and hence it is not use case of charge pump to be used as current drive. As you keep drawing current from the load capacitor, the source(in our case SIO) should be capable of charging the capacitor back to maintian your required voltage. You could approximate the current capability of the charge pump built on the SIO to be about 12mA, since the current source(actual SIO pin) is now available for only half the time. Actually its even lesser than 12mA.
Fret not !!! If you need additional current, you can connect more number of Pins in paralle.
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