ZHCSK90D september 2019 – january 2021 UCC12050
PRODUCTION DATA
The SEL pin is monitored during power-up — within the first 1 ms after applying VINP above the UVLO rising threshold or enabling via the EN pin — to detect the desired regulation voltage for the VISO output. Note that after this initial monitoring, the SEL pin no longer affects the VISO output level. In order to change the output mode selection, either the EN pin must be toggled or the VINP power supply must be cycled off and back on. Section6.4 provides more details on the SEL pin functionality.