Other Parts Discussed in Thread: LM3401 I am Attempting to use the LM3401 for a light project i am working on. I have gone thru the data sheet and done some calculations for my scenario and just want to clarify that what i am trying to do is within the…
Other Parts Discussed in Thread: LM3401 I am using the LM3401 for a lighting project and I've had the board up and running for a while. Before now I have had the DIM pin tied to my Vin until i began to work on my MCU to power the PWM signal. Now that i…
Other Parts Discussed in Thread: LM3401 I am using a LM3401 to power a light project I am working on and have gotten down to my final component selection, but I am having trouble with the inductor. I can't figuring out if that current rating for the inductor…
Other Parts Discussed in Thread: LM3401 Trying to simulate my circuit in ltspice and need an unencryted model, the chat help i got said to post here and ask for the model.
Other Parts Discussed in Thread: LM3401 Customer considering reduce output-noise of LM3401.
Please see below, customer will connect these capasitor (red point) for reduce noise.
Is it correct?
If it is mistake, please let me know correct point.
Additional…
Other Parts Discussed in Thread: LM3401 , LM3405 , TPS92512 Hi,
What is the shutdown current of the LM3401? From the datasheet IQ is specified at ~1 mA for non-switching operation. Does this mean that the current consumption when DIM is held low is 1 mA…
Other Parts Discussed in Thread: LM3401 , LM3409 When you are designing a PWM LED driver it is best to have PWM frequencies above the hearing frequency range around 20kHz. This is due to the piezo acoustic properties of ceramic capacitors. They act as loudspeakers…
Other Parts Discussed in Thread: LM3401 Hi, I want to drive single LED's at around .7A, using a LM3401. While the device has a useable Vin, of between 4.5V and 36V, i was wondering what the minimum Vin could be for a given LED.
For example, if i…
Hi Peter,
As you said, When you ground the DIM pin, the LED must turn off. I suggest you to monitor the HG pin when you ground the DIM pin.
The voltage must be high on it, almost 1 V less than Vin. If that is the case, the LM3401 is working fine. Next…