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: LM3409HV Hello, this part looks good for my application, but I want to confirm that my understanding is correct:
The Iadj pin is used to set the LED current with a resistor. When using PWM dimming, this Radj resistor is essentially setting…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 , Hi all, For some reason, I am getting a different output current and voltage for my LED than I expect based on my calculations. Here are my LM3409 values and component choices:
VIN: 24V…
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…
Part Number: LM3409HV Hello,
We are using LM3409HV and TPS23811 ics in one of our POE product(in development/proto stage).
I have some issues in dimming functionality of LM3409HV.So request you to pls provide a private room so that I can post my current…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 Tool/software: WEBENCH® Design Tools Hi to all,
i read sometimes ago, that webench for LED-driver design isn't available anymore. Is there a posibillity, to get the old (last) version as…
Part Number: LM3409HV Other Parts Discussed in Thread: TLV274 , LM3409
Hi Irwin,
I have a quick question with regards to the Iadj pin of the LM3409HV. When the IC is disabled (EN=0) I measure 400mV on the Iadj pin, but when I enable it (EN=1) the…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 Hi,
Can you confirm what the minimum supply voltage (Vin) would be over the output voltage (Vout) for the LM3409HV. I am under the impression that there needs to be a minimum voltage overhead…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 I'm seeing much more heat in my circuit than I expected.
I'm currently testing at 55V Vin, 30V Vout. I was hoping for > 90% efficiency but I'm seeing only 83. Pin = 6.7W, Pout = 5.6W. …
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 Hello, we have a question to ask, here is, we are doing design high current LED drive PCB, customer assigned to use LM3409HV, the VIN = 48v , one LED only with PWM dimming control, VF LED …
