I’m trying to replace a damaged IC due to accidentally short circuit. But it seems like it’s impossible to find original one. How could I find an alternative?
What is 3P=4G 50Q?
Photo showing more of the PCB:
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3\$\begingroup\$ Why do you think this is a MOSFET? \$\endgroup\$– HearthMar 19, 2021 at 15:25
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\$\begingroup\$ Actually I don’t know, but looks similar? \$\endgroup\$– Heting WangMar 19, 2021 at 15:29
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2\$\begingroup\$ It doesn't look like a MOSFET at all to me. The capacitors and resistor adjacent to it make it look like some kind of integrated circuit, possibly a voltage regulator. \$\endgroup\$– HearthMar 19, 2021 at 15:30
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1\$\begingroup\$ What is the board? Judging by those designators it's quite a complicated circuit. I would trace out what connects to where, and on one of the working ones, what voltages are on each pin relative to ground. I would guess it's a linear regulator, with its input and output capacitors and a feedback resistor, but I'm not certain. \$\endgroup\$– HearthMar 19, 2021 at 15:40
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1\$\begingroup\$ its component id is D1A31A2 .... it could be a diode array of some kind ... how are other ICs identified? \$\endgroup\$– jsotolaMar 19, 2021 at 16:54
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1 Answer
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Thanks @Linkyyy
It’s probably Richtek’s RT2518 (linear regulator). Datasheet here: https://www.richtek.com/assets/product_file/RT2518/DS2518-05.pdf