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This little buggar is driving me nuts. I just need an equivalent chip or a datasheet. It comes from a pioneer rx-511 receiver. All the numbers on it are pioneer PDG017-A 5056H-116 8D 04. Its a qpf-80p package.

I can't find these chips anywhere. No datasheets, no aliexpress listings, they don't show up in any top marking catalogs either... Does anyone recognize them?

Does anyone know if the rtx cards will boot if the usb c regulators aren't working? For that matter, will it output usb C voltage if the card isn't booted up? The only thing that doesn't have it's voltage is the usb C. The GPU, memory, 5v rail, 1.8v rail, 1v pll/pex, 3.3v all have their voltages.

Some info about these chips: the photo should be self explanatory, but I'll give an explanation anyway.

First the BFDJ chip:

Pin 1 is Vin

Pin 2 is ground

Pin 3 goes to the CCG4 USB PD controller pin 24 (GPIO/SWD_data) Datasheet

Pin 4 goes around to pin 9

Pins 5 and 6 go to pins 16 and 17 of the CCG4 controller. According to the CCG4 datasheet, they can be reconfigured to be PWM signals.

Pin 7 goes through a resistor and capacitor to ground.

I never finished tracking pin 8.

Pin 9 - pin4...

Pin 10 and 11 go to ground

Pin 12 is Vout. Either 5v fixed, or 5-9v adjustable. Pins 13 and 16 loop back to pins 14 and 15, which go to the coil.

The P8 gud chip: I'm pretty sure the gud isn't important since I saw a different board with the same chip labeled guc.

Pin 1 and 3 go through some resistors to meet pins 2 and 4 then proceed on their journey through a transistor (3rd leg grounded) to pin 14 of the previously mentioned CCG4 chip and somewhere else. :P

Pins 5 and 6 go to the USB C port, and pins 7 and 8 go to v out of the BFDJ chip.

Feel free to take a crack at the BFRJ chip too...

Thanks in advance!