help identifying missing component??? 6pin ic (voltage regulator?)

[bigjoncoop]

hey guys,
the other day while trying to solder some wires onto some teeny tiny pads, I accidently got some solder onto some legs of an IC and while trying to remove the solder I accidently ruined the IC...  Grrr... This board definitely uses some of the smallest size components.

I'm fairly certain that the  IC in question is a voltage regulator. and of course there no markings on the IC and pictures of the board online also show nothing...

If someone could maybe let me know if this voltage regulator has multiple outputs like 3.3v and 5v or only one...  (if the component is a voltage regulator)
and if it does have multple outputs, any traces leading to the main processor on the board should be 3.3v and the other output should be 5v correct?

Board Info and Pictures-
This board is from a "Foxeer Mix"  which is a FPV Camera With onboard 1080p DVR
This board takes from 5v-24v input

[lordium]

Looks like a richtek switching regulator or similar. RT8258, RT8259 or something like that. If you could determine which pins connect to where it could help narrow it down (GND/VCC/EN/FB etc). Guessing inductor is on the other side of the PCB. I saw another FPV with same chip (V35MA) with this layout but the IC (your IC) was marked C3JG (richtek likes C3xx).

EDIT: No I think it's likely not this... I see more V35MA designs, they usually have this IC close to it. Once marked C3JG and another time "11A E07". Traces don't seem thick enough to support that power of the required regulator (nor proximity of inductor).

[fzabkar]

The 32-pin IC appears to be a quad buck regulator (Power Management IC). You should be able to measure the 4 supply voltages at its adjacent inductors.

I'm wondering whether the 6-pin IC might be a PSU supervisor, or maybe an ESD protection device. If it's the latter, then the camera should work without it.

Are any of the IC's pins connected to Video or OSD? Which pin is grounded? Is any pin connected to any of the 4 inductors? If so, then that would be the Vcc pin.

[bigjoncoop]

@fzabkar
@lordium

hey guys thanks for your help on this.

I will do some pad tracing and give as much detail as possible.

@fzabkar
i will try to power up the board and see what happens. currently there is a tiny resistor missing  ( i think is a resistor) *picture below* what's your thoughts on that? the one next to it is still in place. should i measure it and replace the missing  one with same value? ( the issue is, that these resistors and most components on this board are some of the smallest possible. Grrr...)

As is when 12v applied to the board it only consumes 0.009amps. i would like to replace the resistor and try to power up the board again and see if it works with that missing ic like your stated.