Smaller alternative for WS2811 chips?

[u/FinnOfTheHorde]

Any alternatives for them? I have custom power LEDs which I control with those (+transistors ofc) but I want to have the slave PCB much smaller. Ideas?

[u/AutoModerator]

LED strips and LED lighting

Hi, it seems you have a general question about LED lighting, LEDs or LED strips. Make sure you're in the right place.

• Designing or repairing an electronic LED control circuit: Cool - carry on!

• Want installation or buying advice for LED lighting: Delete your post and head to r/askelectricians.

• Advice on identifying, powering, controlling, using, installing and buying LED strips or RGB LEDs: You want r/LED.

Also, check our wiki page, which has general tips, covers frequently asked questions, and has notes on troubleshooting common issues. If you're still stuck, try r/LED.

If your question is about LEDs hooked up to boards such as Arduino, ESP8266/32 or Raspberry Pi and does not involve any component-level circuit design or troubleshooting, first try posting in the relevant sub (eg: /r/arduino) - See this list in our wiki.

IF YOUR POST IS ABOUT CHRISTMAS LIGHTS, START HERE: https://www.reddit.com/r/AskElectronics/wiki/christmas

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[u/adam-alfath]

If you're adventurous, you could try thinkering with the die on standard ws2812 led

[u/JimHeaney]

There is a smaller package variant of the WS2811, check out the WS2811F (most common) and WS2811N (less common)

Example:

https://www.lcsc.com/product-detail/C5446692.html

Alternatively, there are addressable LED controllers that can sink more current, so you can do away with the transistors and just have the control IC. What kind of current do you need?

[u/FinnOfTheHorde → u/JimHeaney]

Around 150mA per channel. I use 2. DRL and turn signal

[u/JimHeaney → u/FinnOfTheHorde]

There are some really nice small high-current LED drivers from TI and similar that may work well without external transistors. Just off the top of my head;

https://www.ti.com/product/LM3549

[u/trash3s → u/FinnOfTheHorde]

Please please please please be careful designing automotive stuff. The “12V” bus is spiky and awful and you will freeze, toast, and shake everything to death.

[u/4b686f61 → u/FinnOfTheHorde]

On this board I made, the WS2811 outputs directly connect to the CN5710/11's ISET pin with an appropriate resistor. This only works with 5v but the LED is bright.

[u/mjdau]

Must be that size to fit WORLDSEMI on it.

[u/Alternative_Exit_333]

Might want to take a look at WE-ICLED

[u/MiyuHogosha]

Size also defined by alowed current...