This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM3405A Questions

Other Parts Discussed in Thread: LM3405A, LM3405, TPS92513

Hello

My name is Charlie.

I have 2 questions about LM3405A.

1.  I use two LM3405A to drive 2 strings ×3LEDs (total 6 LEDs).  In order to prevent the interference of swtiching frequency , how can I make the switching of the two ICs Synchronous ?

2.My Vin=12V, Vout=10.8V , so they both >5.5V. According to the page 10 of datasheet, I have to choose the Figure16 schedematics. what does D3 do in Figure 16 ? To reduce Vin ?

Thanks and best regards.