Part Number: LM3445 Tool/software: Steven Li:
I have still not been able to contact you regarding a challenging problem that I have in applying the LM3445 in my products..
I have sent a couple of friend requests and have been unsuccessful so far.
Please…
Part Number: LM3445 Tool/software: Steven Li:
I have sent several replies to your generous offer to consider my problem with the LM3445.
My first reply included my schematic and BOM along with a summary of my analysis so far.
That reply was rejected…
Part Number: LM3445 Tool/software: My application using the LM3445 is a buck controller driving a 40V LED array.
My circuit is very similar to the one shown in T.I. application note and data sheet: SNVS570L –JANUARY 2009–REVISED MAY 2013. …
Part Number: LM3445 Tool/software: Dear
At present, during the debugging of the LM3445 scheme's 25W thyristor dimming power supply (input 85-115Vac, output 28-40V 600mA), it was found that there is a significant difference in output current under different…
Part Number: LM3445 Tool/software: Led details:
Led Chip forward Voltage: 5.6 V
Led Chip forward Current: 150 mA
İnput Voltage: 220 VAC
Total Led power will be 100 Watt. It should be dimming with PWM.
For this system, is your LM3445 product enough…
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…
