the LM35 temp. sensor - package gets extremely heated

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elrayes

Joined: 03 Jun 2008
Posts: 164
Helped: 8
Location: Egypt

21 May 2009 19:17 LM35 package heat

Hi
i have problem with the LM35 temp. sensor, since i connect it to a supply the package extremely heated and become very hot......should I connect a certain peripheral (resistor network or something like that)or consider the sensor dead?

Thanks

banjo

Joined: 24 Dec 2005
Posts: 644
Helped: 118

22 May 2009 0:32 LM35 package heat

If you are sure that power and ground are attached in the correct polarity and you have not exceed the +20V power rail, then the device is dead.

You can try disconnecting the output pin, but I suspect the device needs to be replaced.

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pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

22 May 2009 5:48 LM35 package heat

Refer to the pin connections given in the attchment and confirm you have supplied power to the correct pins. Nornal designs will have 5 volts DC supply. Good luck

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