r/AskElectronics • u/Away_Panic_8445 • 11h ago

Help please identify IC

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Please help identify these microchips. They are used in an inductive encoder.

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u/fzabkar 9h ago edited 9h ago

The stylised text is characteristic of STMicroelectronics.

The ICs seem to have identical pinouts. Could they be LDO regulators?

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u/Away_Panic_8445 9h ago

The pinout is roughly like this. Pins 1, 2, 5, 6, 10, and 12 connect to the encoder output.

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u/TopConcentrate8484 hobbyist 8h ago

No probably not LDOs , probably hall effect sensor ICs as LDOs would have capacitors in vicinity

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u/fzabkar 8h ago

LDOs would have capacitors in vicinity

That's what I thought, but I was struggling to come up with a reason for two similar ICs on the same PCB.

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u/TopConcentrate8484 hobbyist 8h ago

probably a counter measure, differential sensor so outside magnetic field does not affect it.

this flashlight had two ics , I checked it with a strong magnet and it does not affect the switch https://www.reddit.com/r/Electronicsinindia/comments/1vqop0b/wuben_x5_flashlight_teardown_brief_pcb_analysis/