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TPS7A1650DGNR

Other Parts Discussed in Thread: TPS7A16

I have a problem with a part I buy from you which I am wondering if you can help with. The part is TPS7A1650DGNR which as you will see is a 3-60V voltage regulator. I have to date only used this in this board up to 26V and it has been fine but I now have had customers using them at 50V and reporting "magic smoke". I have run some tests and have confirmed the problem. The first thing I checked was the data sheet to confirm correct connection and then checked that I wasn't exceeding the power dissipation. The regulator only powers two other IC's which draw less than 10mA. I have even tried it on a board with no other components and thus drawing zero current. This was still a problem. I would appreciated it if someone could contact me to discuss what further information you require in order to help me resolve the problem as I cannot ship any more product until I have a solution.