how to increase 8051 output pin current upto 1A

[rahol]

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]

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]

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.

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

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

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

 

[rahol]

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