Questio about 2 output (+, -) regulator IC

[wichayen]

Does anyone knows the regulator IC like below?

Now, I try to find some regulator that can generate 2 output (pulse and minus). That IC has the pin that can control output pulse or minus. Does anyone knows information about this IC.

Input: 12 V
Output: +5 or -5V (voltage selectable is more useful)

Thank you!

 

[cameo_2007]

are you sure the IC needs only +12V to generate both the +/- 5 outputs?
i've heard of only ic ACT8600,which is a dual regulator with outputs + and - ,but it also needs the input to be - .not like what you said.

 

[wichayen]

Yes, Actually the input side is connected to car battery.
I think, actually I can generate 2 output of +5 and -5 V and select by mechanical switch. But I concern about lifetime of mechanical switch and some noise when switching mechanical switch. So I try to find that IC.

 

[IanP]

It may be very difficult to find off-the-shelf circuit like that ..

How about steping voltage down to 5V and using H-Bridge configuration switch the outputs .. It's like driving a motor and changing direction .. see this pdf:
http://www.discovercircuits.com/PDF-FILES/HBRIDGE2.pdf

Regards,
IanP

 

[dindeds]

It had to be step-down DC-DC converter chip.
Since no spec. is given try looking in Linear Tech or Maxim website for such part.

 

[wichayen]

Thank for everybody idea!

 

[Ogive]

I don't know if this will help but Analog produces something like this


ADP3330 High Accuracy Ultralow I(Q), 200 mA, SOT-23, anyCAP® Low Dropout Regulator

**broken link removed**

See if that's what you want. This one has only one output but check if there are any two output ones.

I remember there was also ADP1173 which I think did 12v to 5v...