Part Number: LM3409HV Hi All,
I'm currently building a led driver based on LM3409HV.
In my test I've seen that using 1uF (for test I'm using cheap electrolytic cap) on output will solve noise problems.
Which cap should I use? I'm looking for…
Part Number: LM3409HV Hi,
I am looking for a table to calculate the LM3409HV at 48 V input voltage. I have the spreadsheet with the two off timers, but it seems that it gives wrong results when using only the standard circuit with one off timer and optional…
Part Number: LM3409HV Hi,
I'm designing an led driver to power a 0.75A 41.5V led board.
I've tryed to use the datasheet and the examples provided but I'm not sure about some components, expecially L1 and R sense.
On my protoboard I've used…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 According to LM3409 datasheet, we used standard circuit , our application is input voltage is 12V, the output LED lighting is 6V, the current is 1A, the Roff=8K, the Coff=470pF, L=100uH, Rsns…
Part Number: LM3409HV Hello,
Please check my design about LM3409HV?
The application is Heliport LED Driver.
LED module consist 5 series and 5 parallel. Each LED Vf is 3V and I want to driver it 350mA to 1A. (CREE/ XPGDWT-U1-0000-00E5E)
(But It will used…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 , Good day, we faced an issue with a LED driver design that we made for tests. After the power is connected to the board, the LM3409 chip burns off. We looked closely at the chip and it seems…
Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409HV
Hello,
we have two problems with the AN-1953 LM3409HV Evaluation Board.
1. Figure 8 shows 200ns and Figure 9 shows 10ns Iled rise time. https://www.ti.com/lit/ug/snva390d/snva390d.pdf…
Hi Steven,
Thanks to your recommendation I was able to find the source of the problem. I've discovered my trace to CSP is too long and too thin, creating additional resistance across the sense resistor. To test, I soldered an 18AWG wire in place of the…