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how to increase 8051 output pin current upto 1A

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rahol

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hello guys .
i want to increase P89V51RD2 output pin current upto 1A, because 8051 pin actually gives 16mA current but i need 1A current to drive my application from 8051 pin.
plzsuggest me some solution about this.

thanx in advance
 

Tahmid

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What are you going to drive?

You can use one NPN/PNP transistor if you need to only sink or source current. If you need to both sink and source current, you can use a totem-pole driver made with one NPN and one PNP transistor.

Hope this helps.
Tahmid.
 

alexxx

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i want to increase P89V51RD2 output pin current upto 1A, because 8051 pin actually gives 16mA current but i need 1A current to drive my application from 8051 pin.
From the word "give" I assume source condition.

http://www.w9xt.com/page_microdesign_pt7_transistor_switching.html
http://www.w9xt.com/page_microdesign_pt9_fet_switching.html

And more general guidelines from microchip.
http://ww1.microchip.com/downloads/en/appnotes/00234a.pdf

Keep in mind to select a transistor suited to you specifications. :wink:
 

rahol

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what is the function of totem-pole driver?
and how totem-pole driver ll help me to get 1A?
 

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