LMG5200: LED DRIVER

Can LMG5200 it work (can I get the design to support) as circuit 2b below?

Hi Eli,

thank you for your interest; yes you can use the LMG5200 to drive a similar circuit by using only the low side FET, and leaving the high-side unconnected. And HI held low (to ground).

Alternatively you could use the LM5114 as low side gate driver with a discrete FET.

Please let me know if this answers your question by clicking the verify answer button.

Best regards,

Alberto

Hi Eli,

I imagine when you say 100MHz, you mean that the on pulse is 10ns, with 2ns rise/fall.

If this is correct the LMG5200 can provide a minimum pulse width of 10ns with ~40V/ns slew rate.

The LM5114 can provide a minumum pulse of 5ns.

Both solutions are able to deliver the desired performance, if you are planning on using the LM5114, the FET selection will depend on the voltage and current requirements.

Best regards,

Alberto

Hi Eli,

the FET I would suggest for this application is  EPC2040.

Best regards,

Alberto