Jump to content
43oh

C2000 Concerto ControlCARD LED driver


Recommended Posts

Hello!

 

I am currently designing some electronics using the Concerto ControlCARD.

 

On the controlCARD, TI is using the SN74LVC2G07DBVR to drive two LEDs.

Assuming that the forward voltage of the diode is approximately 1.2V, the LED current is about (3.3V-1.2V)/680Ohm = 3mA.

The PINs of the F28M35x are specified for 4mA max. which means it should be perfectly capable of driving the LEDs without the driver.

 

For my understanding the driver is not really needed?

Do i miss something else/important?

 

Thank you very much in advance!

 

Kind regards

Stefan

Link to post
Share on other sites

Stefan,

 

You're correct.  I'm not sure if this is true on the controlCARD, but for the LaunchPad I put these on the LEDs to prevent loading the pin such that it can be used for other functions while still driving the LED.  I would imagine the reasoning is similar on the controlCARD.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...