Part Number: LM3444 I have a design based on the LM3444 (using the typical application circuit) that is not behaving as specified in the datasheet.
On initial turn on current ramps up in the inductor and overshoots the setpoint applied at the FILTER pin…
Part Number: LM3444 Please provide amplifying information for the sin(θ) term in equation 28 from the LM3444 datasheet (SVNS682D), page 20. Specifically, what is the term accounting for when determining minimum voltage present to drive the LED stack…
Part Number: LM3444 Other Parts Discussed in Thread: TPS92074 Answer to why LM3444 V buck minimum calculation utilizes sin(θ), page 20, equation 28:
Currently in non-LED load, buck PFC applications, a commonly accepted output voltage that maintains…
Hi Steven,
Thank you very much for your strong supports.
I see. I'm looking forward to receiving your reply for TPS92074.
Could I ask you about LM3444?
Is there any way to enable and disable LM3444 for LED turning on/off?
Thank you again and best regards…
Part Number: LM3444 Hi team,
I am working with LM3444 and interested in understanding how to use the FILTER pin for dimming. More specifically, I am interested in using this pin for dimming with a potentiometer. Are there any resources on how to use this…
Other Parts Discussed in Thread: LM3444 Hello Sir,
I am planning to use 7nos of (1Watt, 3.3V, 350mA, LEDs ) for making 7 Watt AC LED bulb using LM3444 (non isolated, buck mode), I have gone through the datasheet and I hope it is possible. My question is…
I'm looking at the A19 Edison evaluation board and it says that it's configured to drive 5-13 series LEDs. What is the forward voltage of these LEDs? Or alternately, what is the maximum LED string forward voltage of this reference design? This information…
Other Parts Discussed in Thread: LM3444 Hello,
I have an LED component in which the input is limited to a maximum of 150 V DC from + to earth Ground per UL, but be greater than 50 V in order to operate. The voltage drop across the LED itself will be on…
