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tps61260功耗问题

Other Parts Discussed in Thread: TPS61260

tps61260数据手册给出的静态电流是29uA,我通过反馈电阻200k、1M欧姆调节输出到3V。输入是2V电压,我测试驱动5K电阻是没有问题的,但是却驱动不了这个芯片,接上之后就把输入拉到1V以下了。RI接的2k电阻。