Need help to identify SOT23-5 step-down converter to 3.3V marking E16q9

[DriversScrew]

Hello everybody,
I need to replace a shorted SOT23-5 step down converter in a consumer audio device marking E16q9. What I found out from the board layout and measurements:

Vin: 5,0V
Vout: 3,3V (connecting to all 3V3 inputs of a N32905U3DN)
Pin1: ? (perhaps enable)
Pin2: GND
Pin3: Vout - connected to 3µ3 coil
Pin4: Vin
Pin5: Feedback, voltage divider, two resistors connect Vout-Pin5-GND, 680k+133k

I searched many datasheets, but no one seemed to match according the surrounding components.
Best similar parts I found were TLV62569 and HX1151. But calculated output voltage doesn't match and both are using 2.2µH coil.

Any ideas?

[truclacicr]

Your feedback resistors suggest that the feedback voltage is 0.54V rather than the more typical 0.6V. Otherwise the pinout seems very common. The size of the inductor might give some indication as to the switching frequency.

Can you use the TI part and add a 5.6M or 4.7M resistor in parallel with 680K?

[DriversScrew]

Can you use the TI part and add a 5.6M or 4.7M resistor in parallel with 680K?

That would be possible.

The XM5084-ADJ seems to match, the datasheet mentions the 3µ3 inductor.
But strange enough, the voltage is off from 3,3V as it says Ref:0,6V, too.

[truclacicr]

Could "6" be the year of manufacture, ie E1ywx (or EIywx)?

What are the codes on the other ICs? These might help to isolate the Year/Week characters, and they may help to identify the manufacturer.

[DriversScrew]

If this picture found on the web can be trusted, XM5084-ADJ or equivalent should be correct.
STI3408B seems to be one more alternative. They all use the 0.6V ref. and have identical pinout.