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AXP173 датащи(PDF) 17 Page - List of Unclassifed Manufacturers

номер детали AXP173
подробное описание детали  Enhanced Single Cell Li-Battery and Power System Management IC
PDF  45 Pages
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производитель  ETC2 [List of Unclassifed Manufacturers]
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AXP173 датащи(HTML) 17 Page - List of Unclassifed Manufacturers

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Enhanced single Cell Li-Battery and Power System Management IC
AXP173
1, 输入电压过低,低电保护;
2, 负载过大引起电源的输出电压过低,过负载保护;
3, 输入电压过高,过压保护(具体细节参见“电源通路管理”章节);
4, PEK 大于 OFFLEVEL 时(默认 6S)系统自动关闭除 LDO1 以外的其它输出;
AXP173 的自动保护机制,可以避免应用系统异常时发生被供电器件的不可逆转损坏,从而保护整个
系统。
休眠和唤醒(Sleep and wakeup)
MannerA 且开机的情况下,如果系统需要进入 Sleep 模式,并将其中某一路或几路电源关闭,则
可由
REG31[3]控制,决定是否由 PEK 短按信号触发 wakeup,让 PMU 将各路输出电源恢复到 REG31[3]
被置
1 时的状态,各路被关闭的电源依次按照规定的上电时序进行。
如下为
Sleep 和 wakeup 模式下其控制流程。
REG31[3]写 1
打开唤醒功能,
PMU 记录 此时
REG12H 的设置
12H 寄存器,
关闭相应电源
Sleep 并等 待
PEK 按键发生
按键?
电源恢 复至
REG31H[3] 写 1
时的状态
Y
N



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