Other Parts Discussed in Thread: TPS92515 , LM3414 , LM3405 , TPS92640 , LM3409 , LM3410 , TPS63070 Does something like this exist? Does not need to have 4A output.
Part Number: LM3410 Other Parts Discussed in Thread: LM3405A , LM3405
Is it possible to create analog dimming with LM3410, by adding an analog offset to the feedback?
(see attached sketch)
The step-down LM3405A can be handled this way, but there are issues…
Other Parts Discussed in Thread: LM3405 Hi All, Why Common anode CC buck led driver efficiency can up to 95%?? With floating buck topology have relation? The efficiency compare to LM3405(buck topology) is better 10%
Hello dear people,
I think an MCU is not really something that will help me.
To be honest I read all your discriptions and tried my best to understand them.
Most of the content is now clear for me.
Nevertheless now I know that for example LM3405 could…
You would need a buck driver for 12V input and 1 LED output. The smallest I am aware of would be the LM3405 or LM3405A. They are in a SOT package and switch at 1.6MHz so the externals can be small. The only difference between the two really is the maximum…
The product line I work on only has boost switchers. Although it looked liek the TPS92510 is one of the best fit. I also saw the LM3405 which looks like it could work.
Thanks
Travis
The LM3405 does not have a synchronization capability. If you need to have that capability you could check out the TPS92513.
As for D3, yes, it is to reduce the voltage. You need to keep that voltage between 2.5V and 5.5V (preferrably on the higher end…
Hi Kent,
Depends on your LED voltage higher than or lower than the input voltage, we have LM3405 for buck and LM3410 for boost.
Both of them are N-FET integrated, with PWM dimming input and have 6-pin SOT package option for minimizing board area.
May…
I am also interested to know if the LM3405 features open circuit protection. I am using the LM3405 to drive multiple sets of LEDs at different times. I select what LED to drive by opening/closing some FETs acting as switches. There will be small periods…
Hi Clinton,
Thank you for your reply. I have been using the LM3405 in a couple of designs, but for this I would need >2.5 A LED current.
If I remove power from Vin only, but still have power on the PFET source, will the transistor be turned off?
I…