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MIC2506 and MIC2514 not working properly
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MIC2506 and MIC2514 not working properly

by sheepke on Sun May 10, 2009 6:03 am

Hello,
I'm building the wavebubble but i'm having trouble with these three switches.
The MIC2506 just don't switches, the Atmega sends the signal to the MIC, normally it would have to switch but i don't get any voltage at the output.
The MIC2514's are another story, they have +/- 11V at the output at all time, no matter what control voltage.
I started thinking the control voltage is not correct, since the datasheet says control voltage should be no more than 2.3V, and when the Atmega sends the high signal to the MIC that is 3.3V.

Is there anyone that can help me?

Greetings

sheepke
 
Posts: 8
Joined: Fri Dec 26, 2008 6:14 pm

Re: MIC2506 and MIC2514 not working properly

by weihong1988 on Mon May 11, 2009 12:04 am

sheepke wrote:I started thinking the control voltage is not correct, since the datasheet says control voltage should be no more than 2.3V, and when the Atmega sends the high signal to the MIC that is 3.3V.


Not true, this was taken from the 6V power switch, MIC2506.
Page 3: Absolute Maximum Ratings
Control voltage (Vctl): -0.3V - 15V
Under Page 10 you also can see the MIC2506 connected to a USB controller chip outputting 3V3 control signals.

What you have seen is the maximum voltage needed to obtain a logic high signal on the output.

My guess is that you have soldered one or more power switches the wrong way round, thereby causing the others to fail, since the control lines A and B are paralleled and shared by the 3 switches. Or, if you designed the PCB yourself, the tracks were laid out wrongly.

Edit:
BTW, mine works OK.
weihong1988
 
Posts: 9
Joined: Fri Oct 31, 2008 10:19 am

Please be positive and constructive with your questions and comments.