SNVSAJ6D July 2016 – December 2017 LM5141-Q1
PRODUCTION DATA.
The LM5141-Q1 includes an output voltage monitoring function to simplify sequencing and supervision. The power-good function can be used to enable circuits that are supplied by the output voltage rail or to turn on sequenced supplies. The PG pin switches to a high impedance state when the output voltage is in regulation. The PG signal switches low when the output voltage drops below the lower power good threshold (92% typical) or rises above the upper power good threshold (110% typical). A 25-μs deglitch filter prevents any false tripping of the power good signal due to transients. TI recommends a pullup resistor of 10 kΩ from the PG pin to the relevant logic rail. Power good is asserted low during soft start and when the buck converter is disabled by EN.