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Hi,
1.请问LM2776能稳定输出的最小负载电流是多少呀?
2.LM2776在轻载时输出电压会有波动,如下图,请问这种波动是PFM Operation造成的吗?
3.请问下图所示PFM操作的原理是否是:通过VIN和VOUT分压电阻检测输出电压,当输出电压过低时,关闭OSC;当输出电压由于静态电荷释放抬升到一定程度时再启动OSC,以保证轻载时输出电压不会过高的同时最小化输入静态电流?
4.请问是否有办法禁用PFM操作?或者,对于负载变化范围较宽的应用如何来平衡静态电流限制和最大负载电流之间的矛盾?