上电后,状态指示灯一阵闪烁,然后就常亮。检测一下充电的条件,都是符合的;
而且在状态灯常亮后,拔掉电池在插上,指示灯一直闪烁。拔掉电池,检测了一下sw的输出,一直是1V左右的电压。
望大神予以解答,万分感谢。
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The following conditions have to be valid before charging is enabled:
• ISET pin above 120 mV.
• Device is not in UVLO mode (that is, V
AVCC
> V
UVLO
).
• Device is not in SLEEP mode (that is, V
AVCC
> V
SRN
).
• OVPSET voltage is from 0.5 V to 1.6 V to qualify the adapter.
• 1.5-s delay is complete after initial power up.
• REGN LDO and VREF LDO voltages are at correct levels.
• Thermal Shutdown (TSHUT) is not valid.
• TS fault is not detected.
• ACFET turns on (see System Power Selector for details).
One of the following conditions stops ongoing charging:
• ISET pin voltage is below 40 mV.
• Device is in UVLO mode.
• Adapter is removed, causing the device to enter SLEEP mode.
• OVPSET voltage indicates the adapter is not valid.
• REGN or VREF LDO voltage is overloaded.
• TSHUT temperature threshold is reached.
• TS voltage goes out of range, indicating the battery temperature is too hot or too cold.
• ACFET turns off.
逐条对照,问题绝大部分是以上其一。