• Audio amplifier - Switching mode power supply component identification

Oggi è 12 maggio 2025, 07:17

 [RISOLTO] Audio amplifier - Switching mode power supply component identification

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#1 Audio amplifier - Switching mode power supply component identification

da matic • 26 agosto 2020, 22:18
Hello!

As the title says I'm repairing the switching mode power supply of audio amplifier. It is an "exotic" brand, so the schematic is not available.
Please, identify the burned component. It is in SOT-23 housing and is located at primary side of power supply.

Immagine

The lower left pin is connected to the ground.
The upper central pin is connected to the reference voltage (pin 16) of the chip SG3524.

According to the connections I think it is not a transistor.

Re: Audio amplifier - Switching mode power supply component identification

da Google Adsense [BOT] • 26 agosto 2020, 22:18

#3 Re: Audio amplifier - Switching mode power supply component identification

da matic • 27 agosto 2020, 08:19
greg464 ha scritto:może to być ten https://pl.mouser.com/datasheet/2/308/B ... 522521.pdf
No, I don't think so.

The pin 1 according to the datasheet is a gate (G) pin. In my case this pin is connected to the ground.
I think it would be very unusual that the gate pin to be connected to the ground.

#4 Re: Audio amplifier - Switching mode power supply component identification  [RISOLTO]

da Vogelek23 • 7 maggio 2021, 00:43
If I'd seen this topic earlier... It's TCM809LENB. Please find datasheet attached.



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Re: Audio amplifier - Switching mode power supply component identification  [RISOLTO]

da Google Adsense [BOT] • 7 maggio 2021, 00:43
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