I’ve checked Yuritsh excellent thread with no luck.
Package: SOT23-5
Marking: AD2RC
Coil (SW) is connected to pin 3.
Input voltage (3.3V) goes to pin 4.
Ground goes to pin 2.
Feedback (FB) I guess is pin 5, because there’re two adjusting resistors there.
Pin 1 has 4.45V
No diodes or transistors in circuit. Output voltage is 1.2V, so it’s a step-down or buck regulator.
