Part Number: LM3445 Good day,
I need to design a TRIAC dimmable device with 10 LEDs (3.2V @ 20mA). I was thinking of using the LM3445 since this seems to be a good option.
The requirements of the end product are:
compatible with UK-US-EU mains (90 -…
Part Number: LM3445 When applied as outlined in the LM3445 Data Sheet and Application Note, the resulting circuit is susceptible to failures of the main switching NFET.
The FET becomes shorted at all terminals and the obviously high-voltage event that…
Part Number: LM3445 Hi,
I find there is a minimum on-time(about 200ns) for the LM3445.Min Ton matter means we have worse line regulation spec when TRIAC level is min.
Because Min ton is fix,LED voltage tolerance also effect min Iout.How to achieve constant…
Hello,
This isn't really a soft start issue. What is happening is the LM3445 is still active (on) without any current to supply to the LEDs. When some energy comes in through the input the LM3445 immediately starts running.
Is this really an issue…
Part Number: LM3445 Hi team,
My customer would like to design searchlight equipment and they think LM3445 should be possible candidate.
The specification they need are
1. Vin=90Vac~264Vac
2. Vout <40Vdc (LED number is not confirmed)
3. Iled <700mA…
Part Number: LM3445 Hi,
We have a High PF flyback triac dimmable project,and we are going to use LM3445.I want to design the driver refer to AN-2034. But the Line regulation is not good.Do you have improve solution? Thank you!
B/R
Part Number: LM3445 Dear all:
I find two OVP circuit for LM3445 here.
My colleague want to find a simpler OVP solution.Is there any other simpler OVP solution?
Thanks!
Part Number: LM3445 Dear Team,
Here is Kevin from the Delta Taiwan team.
The customer is looking for a suitable LED controller, not sure if we have a suitable device
Vin: 150Vdc ~ 180Vdc, Vout: 121Vdc ~ 45Vdc Iout = 0 A~ 3.2 A with 2% tolerance (The current…
Part Number: LM3445 Other Parts Discussed in Thread: TPS92314A , LM3447 Hi, my name is Fabrizio and I'm interested in LM3445 as led driver in flyback configuration.
I can't find any calculation tool or excel sheet.
Can you help me?