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Author Topic: LM2679 short protection?  (Read 2783 times)

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Offline akisTopic starter

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LM2679 short protection?
« on: November 23, 2013, 05:24:37 pm »
Does anyone know if the LM2679 has protection against shorts in the output? I have managed to destroy two of those before I realised what was happening and I believe it is because I shorted the output inadvertently by using an ammeter that requires isolated power supply (only the supply I used was not).
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Offline Bored@Work

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Re: LM2679 short protection?
« Reply #1 on: November 23, 2013, 05:40:53 pm »
To lazy to read the datasheet?
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Offline Jon86

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Re: LM2679 short protection?
« Reply #2 on: November 23, 2013, 07:25:06 pm »
"Resistor Programmable Peak Current Limit Over a Range of 3A to 7A."
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Offline akisTopic starter

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Re: LM2679 short protection?
« Reply #3 on: November 23, 2013, 10:08:24 pm »
Yes, and you'd think that with the current limit resistor the chip would be indestructible. Anyway, it may be because these ICs are from ebay - they have given me a ton of trouble. I have ordered a new bunch from Digikey and will test when they arrive.
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Offline Jon86

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Re: LM2679 short protection?
« Reply #4 on: November 23, 2013, 10:18:48 pm »
What? I just answered the question, the chip DOES have output short protection.
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