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我用MCP7831锂离子充电管理控制器与锂离子电池组电池(LIR2450)。我有一个LED电路连接到状态引脚(STAT),所以它应该点亮,而电池充电时,关闭电池完成充电。然而,LED是闪烁的,因为STAT输出切换。STAT输出会切换的原因是什么?
以上来自于百度翻译 以下为原文 I'm using the MCP73831 Lithium Ion Charge Management Controller with a lithium ion coin cell battery (LIR2450). I have an LED circuit attached to the Status pin (STAT) so it should light up while the battery is charging and turn off when the battery is finished charging. However, the LED is blinking because the STAT output is toggling. What could be the reasons why the STAT output would toggle? |
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充电电源的来源是笔记本电脑的USB端口(我也尝试了墙上充电器USB端口具有相同的结果)。当使用范围观察时,该电压是稳定的。然而,电池充电时的电压实际上并不稳定。它总是低于4.2的充电电压大约0.2V到4V…我附上了一个快照。我还附上了这个电路的原理图。我用的电阻实际上是127欧姆而不是显示的56欧姆。电池电压稳定而不充电……你知道问题出在哪里吗?
以上来自于百度翻译 以下为原文 The source of charging power is a laptop's USB port (I also tried a wall charger USB port with the same result). This voltage is stable when viewed with a scope. However, the voltage across the battery while it is charging is actually NOT stable. It constantly dips below the charging voltage of 4.2 by about 0.2V to 4V...I attached a snapshot of this. I also attached the schematic of this circuit. The resistor I'm using is actually 127 ohms instead of the 56 ohms shown. The battery voltage IS stable while it isn't charging... Do you know what the problem could be? Attached Image(s) |
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