看来问题在 Vreset = 0.15V 上.
RESET Reset output. Open-collector output
这是输出了 低电平 了.
9.3.2 Power-On-Reset (RESET)
The power-on-reset is an output with an external pull up resistor to the regulated supply. The reset output remains low until the regulated VO exceeds approximately 4.65 V and the power-on-reset delay has expired.
那么就该检查检查 C3 或者 4 脚的问题.
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