LTC3105 will not start

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LTC3105 will not start [Copy link]

Have you guys used this chip? Its AUX pin needs to charge C2 first, and the chip can only start after it reaches 1.4V. However, when I charged it, I found that the capacitor could not reach 1.4V. What is the problem? And the charging speed is very slow.

chunyang

First, make sure the input energy is sufficient.

qwqwqw2088

When charging, the capacitor cannot reach 1.4V. How many V can it reach? There must be a number, how much error is there, and then analyze where the problem is

bluefox0919

Shouldn't the SHDN pin be pulled LOW after the device is powered on?