Part Number: LM3404 Hi,
I need to power five LED strings from one LM3404. Only one string will be ON at a time.
What do you suggest for that purpose. How mosfets can be used ?
The circuit I am using is showed below.
Vin is 12Vcc. Every string…
Part Number: LM3404 Hi,
In my design the LM34304 is not reaching 1A output current as determined by components according to LM3404 eval board schematics.
The design schematic:
the board layout:
TOP
BOTTOM
Thank you.
Part Number: LM3404 Hi there,
The circuit below has been used for many years in a microscope illuminator product line. It worked fine until we recently replaced the LED it was driving. The original LED had a (forward voltage drop) Vf = 7.6v, and the…
Part Number: LM3404 Other Parts Discussed in Thread: LM3405 Hi,
we have an application where we want to use the LM3404 to drive one or multiple LED string in parallel. The LED strings are remote. We want the same current on all the strings. To get that…
Part Number: LM3404 I fear that in the two examples provided in the documentation the formula to calculate Ron is wrong: Vin should be used in place of Vo. Is my assumption correct?
Could you please check?
Thank you
Part Number: LM3404EVAL Other Parts Discussed in Thread: LM3404 Hello Yichao Tang. I finally have an NDA. Please see below. Can you now send me information on the new product that has better dimming capabilities than the LM3404. My email is gregory.w…
Part Number: LM3404 We are designing an LED driver that needs to operate at down to -5C.
At that temp, the LEDs will either flash dimly or not come on at all. We have verified the LEDs will turn on at this temp, and the other components are rated to…
Part Number: LM3404 Hi,
After connecting the power supply, there was a problem that the LED output voltage was low at 4.5V (normal value 21.1 to 28.5V) because it did not light even if the switch was pressed after opening it for about 3 seconds.
…
Part Number: LM3404EVAL Other Parts Discussed in Thread: LM3404 , LM3402
Hi Experts,
Seeking your assistance please. I am posting this on behalf of Gregory, a customer using LM3404EVAL:
Using your AN-1839 LM402/LM3404 Fast Dimming/ True Constant…
Part Number: LM3404 Other Parts Discussed in Thread: LM3407 , LM3401 , Hi,
Customer want to know if there is any available calculation tool for this IC that they can used?
I can only find the following design calculation for LM3401 and LM3407
…
