Hi,
More than four possible options, no guarantees at all... SOT-23-5 for:
53 came up with R1223N322H (PWM St-Dwn DC/DC Cnv-Ctr, CE, 3.2V, 500KHz, Reset-Pr.); RN5RZ53AA-TL-FB (Low Noise, LDO, -CE, 5,3V±2%, 100mA); RN5RF53AA (LRip, -CE, 5,3V±2%, 1A*).
P63 came up with S-1701B3328-M5T1 (LDO VR, CE, 3,3V±1%, 400mA and VDet 2,8V, -Reset ODO).
P5 can be TC1186-3.3VCT713 (LDO, CE, -Error, 3.3V±3%, 150mA).
3E could be: R3111N431A, RN5RL53AA, RN5VD43CA - respectively: Voltage Detector 4,3V±2.0%, Reset Push-pull output, VR-IC 5,3V±2,5%, 150mA, Voltage Detector 4,3V, Reset Open drain output.
Best of luck with the search.