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Author Topic: ULN2064B relay driver  (Read 226 times)
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sreedevk
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« on: January 07, 2013, 12:16:36 am »
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Hi
I am planning to use ULN2064B ic in my project. when i checkedthe datasheet, it is mentioned that each dqrlington provides about 1.5A at a breakdown voltage of 50v. Does this mean that I have to use 50v supply to get that much of current. How much can i get at 12v?
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LarryD
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« Reply #1 on: January 07, 2013, 12:44:25 am »
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Does this mean that I have to use 50v supply to get that much of current.
No, 50V is the maximum rating
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How much can i get at 12v?
1.5A see the graph, i/p current controls o/p current

Have you looked at ULN2803 (500ma for each) you get 8 drivers, can be put in parallel, with common snubbing diodes.
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Krodal
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« Reply #2 on: January 07, 2013, 01:04:58 am »
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You can get 1.5A at any voltage.
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sreedevk
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« Reply #3 on: January 07, 2013, 03:58:00 am »
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I used uln 2003. The ic burned off when i used it. i need more than 500mA.
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LarryD
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« Reply #4 on: January 07, 2013, 01:19:31 pm »
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What "did you say" you were driving?
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