LM36011: How to avoid uneven LED brightness caused by parallel LED?

Ronald Wang

Intellectual 390 points

Part Number: LM36011
Other Parts Discussed in Thread: LM3643

Dear TI,

One application requires LED to be used in parallel.

How to avoid uneven LED brightness caused by parallel LED?

Thank you！

Best regards,

Ronald

over 5 years ago

0 Harini Sankabattula over 5 years ago

TI__Intellectual 1780 points

Hi Ronald,

You may use ballast resistors to help reduce forward voltage mismatch but it will still not match very well. LM36011 is meant to drive single LED.

How many LEDs do you have in your application. To drive 2 LEDs, I recommend LM3643.

Best,
-Harini

0 Ronald Wang over 5 years ago in reply to Harini Sankabattula

Intellectual 390 points

Hi Harini
Thank you for your solution & suggestion.
Best regards,
Ronald

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LM36011: How to avoid uneven LED brightness caused by parallel LED?