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Could you please tell me what kind of LED matrix you want to use? I think you should know that the current is related to the matrix topology since you said you need 200mA current pulses for maximum 3 LEDs together.
If possible, please tell me your current requirement and how many LEDs you want to control. Then I will help to find a solution for you.
I need to lighting ~30 leds with pulse of 5 msec or less, each time 3 leds together with 200ma(serial or parallel). I have 3.2v battery and I don't interesting to use boost converter to save energy and heat. Practically after pulse follow long "off" period about 10-12 times of on. The system controlled to be below 42C temperature, temperature regulation performed by increasing of "off" period.
I am not need each led control, but every 3 leds should lighting together, but all together about 30 leds. It could be 10x3 channels with pwm control. It could be easier if 3 leds will be in parallel(600ma), no need boost converter.
Actually, the maximum current of our LED driver is about 100mA per channel and based on my experience, I think the general RGB application doesn't need such high current. What I mean is that if you need 200mA per LED, it means our LED driver needs 200mA per channel or you need to connect 2 channel together for one LED dots.
Could you please tell me what's your end equipment?
Based on your description so far, I think you can use 4pcs TLC59116/TLC5911F to control all 30 LEDs.
We are not general RGB application, it is medical design. I must 200ma pulse. is it possible to set Rext of TLC59116/TLC5911 for 200 ma and control by pulse? If 2 channels connected to one led is working, it is also possible solution.
