Help identify ST Micro regulator or oscillator chip

[jimmyboy111]

This is located close to the rectifiers on the board
LJ92-01511A goes to a Philips 50PFP5532D

I cant find anything on L4911AD that fourth letter or number is all scratched up and fuzzy

the closest I can find is L4971 from ST Micro but that only has 16 pins not 20

I suspect it is the culprit of my dead board because it is connected to the base of a transistor which runs an oscillator for the first set of power mosfets on the board .. you can see pin 20 on the chip goes across a resistor connecting to the base of the transistor in the photo

.. the rectifiers work fine .. the missing cap I removed in the oscillator (you can see it in the pic) 4.7uf electrolytic tests fine with ESR .. the transistor was removed as well and tested fine .. not knowing the pinout of this chip is eating my lunch

Thanks

[stj]

Re: Help identify ST Micro regulator or oscillator chip

looks like L4981 to me.
datasheet looks promising too
http://www.st.com/web/catalog/sense_.../SC680/PF63215

[jimmyboy111]

Re: Help identify ST Micro regulator or oscillator chip

Thanks .. it was right there on Mouser .. I typed "L49" earlier I just didn't scroll down

DOH!