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LP8866-Q1: What is BSTOVPL fault?

Part Number: LP8866-Q1

Hi Expert

1. For BSTOVPL fault, when FB voltage over 1.4V, device will trigger this fault and set BOOST_FAULT_STATUS resister, FET will turn off at the same time. when FB voltage less than VFB-OVPL, boost will restart. 

Is  BOOST_FAULT_STATUS resister be clearing when boost restart or this fault always be set unless EN pull down? 

2. For ISET out of range fault, when device automatically found new range, the BOOST_FAULT_STATUS register still keep setting or be cleaned? 

3. For power-line FET, Is it only two effect, the one is soft start and the other is block current when system power off?