Is the LTC3115-1 thermal shutdown meant to protect the chip from excessive load or short circuit?
Thermal shutdown occurs at ~165°C, but the absolute max is 125°C or 150°C depending upon the package.
I am using the LTC3115EDHD-1#PBF or 125°C package.
I am using a circuit similar to the DC2119A reference design with the following exceptions. T
1) L1=5.6µH instead of 10µA
2) Total output capacitance is ~44µF instead of 95µF.
This circuit is supposed to be good for about 2A. My normal load is about 600 to 700mA. If I attempt to double this load, I have had two LTC3115-1 devices fail. After the device fails, it no longer produces PVCC (even with no load).
My input voltage is 12V.