Electronics > Projects, Designs, and Technical Stuff

The TLV760xx regulators are a nice piece [s]of crap[/s]

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bloguetronica:
Hi all,

I just want to say that these regulators are crap. TI already has a complain of a TLV76033 regulator blowing up ant taking other devices with it. I can confirm that I had 5 TLV76050 regulators blowing up and damaging other ICs, even at a very low load, and normally at powerup. Really, don't use them.

Anyways, TI assumes all is fine and doesn't give a cent. I'm better off using the TPS70950 instead.

Kind regards, Samuel Lourenço

djnz:
Just out of curiosity, where were these parts sourced from?

T3sl4co1l:
Just out of curiosity, did you scope the input voltage and current to verify that they were within ratings at all times?

Tim

bloguetronica:
Hi Tim,

The parts were bought from Mouser. All the regulators were supplied with 24V and supplied no more than 16mA (to an expensive AD5551 and a LED).

Kind regards, Samuel Lourenço

floobydust:
I'm not convinced the IC is a lemon. Although TI is still full of datasheet bullshit "... spikes up to 30 V — for example, appliances and automation applications."
Anyone knows this part is a basic LDO in a SOT-23.

The IC cannot withstand -ve voltage transients at all.
35V max. input which at your 24V leaves little room for overvoltage transients.
It's well known the +ve voltage spike from connecting a wall-wart or laptop adapter to a board can kill an LDO. It depends on the input capacitor and wiring inductance.

TLV760 uses Sziklai and TPS709 uses mosfet.
Let us know if the TPS709 fixes your problem, but seeing the rest of your circuit would help before blaming the IC. It must have made alot of smoke.

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