Re: [ts-7000] VReg Getting Hot

["Stephen Queen" <>]

On 09 Apr 2007 04:32:06 -0700, Taj Morton <> wrote:

Hi All,
I've got a TS-7200 that I recently bought. It works fine, but the vreg
I'm using gets _very_ hot while using it (e.g., it will burn you). The
VReg is a ST Microelectronics LD1084D2M50R (5V, 5A) The product is
listed at: http://tinyurl.com/37x7fk
The datasheet is at: http://www.st.com/stonline/books/pdf/docs/9035.pdf

I've tried 2 vregs so far, (both the same model), and the same thing
happened to both of them.

I don't have anything running off the board yet. I had a CF card
plugged into it, but removing it changed nothing. Any ideas?

Thanks!
- Taj

P=E X I (Power = Volts X Current)

The TS7200 draws 450ma from a 5v supply. So if the voltage into the regulator is 12v then the drop across the reg is 12v - 5v =7v. If the voltage across the reg is 7v, then the power being dissipated is 7v X 450ma = 3.15 watts. That could be causing the regulator to be feeling hot. What are you using for an input voltage?

Stephen Queen

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