Part Number: TPS1685
Tool/software:
Hi, i am using this new efuse. i still no idea do i need to leave it emply on the pin 19 PGood and pin 13 FLT , i have been asking different ai , Most wasn’t a reliable answer, i mean some ai said it can be a indicator light.
I want to know do i need to connect it with resistor or should i need to leave it in blank. Some ai said FLT should be connect at least 10kΩ to somewhere which has 3.3V or 5V , i still don’t get it.
PGood>>This is an open-drain active high power good pin which is asserted high when
the device is in steady state. This pin has a weak internal pull-up to internal
supply voltage.
FLT>>This is an open drain active low pin which is pulled low to indicate a fault. Pull
up this pin to external supply voltage with a resistor.
I still no clue what it mean?
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I found some answer from TI, some said pgood ,flt does can add as no erc, but pdf said good is with resistor. so i add some to get both itself has it own resistor connected and i have discussion with ai. And i have a a solution but wasn’t still very sure. As i use the output voltage or power and power back to this efuse, not the efuse itself pin out to repower those pins 13 flt, pin 19 pgood. i can repost the new answer hope someone can chat with.
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FLT is a fault indicator pin, it is an open drain active low pin. So you can connect an external 10k pull up resistor to it to the same supply voltage connected to pin9 VDD or any other voltage required to operate both those pins. PGOOD is a power good indicator pin, it is an open drain active high pin and it has a internal weak pull up, so even if u leave it floating then it should be fine.
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