What's that smell...Oh sh**t

[modsquad]

Wired my Ross Compressor switches etc to board, inserted my newly arrived LM3080 plugged in the battery to test the LED and switch.  I noticed the acrid smell of petrochemical...Hey is my IC supposed to smoke like that...Oh sh**t.     By the time I turned off the switch the thing had seperated from its little legs 

Luckily I ordered 4 of them.  I am kind of hesitant to put another one in so I will be checking the voltages to the socket. 

Stan

[gez]

Not familiar with the circuit, but check the value of the resistor to the Iabc pin, or for a short to this pin.

[JimRayden]

I noticed the acrid smell of petrochemical...Hey is my IC supposed to smoke like that...Oh sh**t.

The acrid smell of petrochemical.... that must be what most of us know as 'the magic smoke'. You let the magic smoke escape from any dinghy (be it a chip, a diode or a transformer) and you will have to face the consequences.

Sorry for being of no help though.

---------
Jimbo

[Jay Doyle]

All it takes is 2ma into the Iabc pin to fry a 3080.

The FIRST resistor I always solder in any circuit using a 3080 is the 27k off the Iabc port (pin 5). 27k if you are using 9V.

[modsquad]

Yeah, I used perfboard to do it.  I don't realy trust it with my skills so I made a PCB based on GEOFX layout and will resolder everything and check the voltages.

Stan