Hi, I use MP3383 and I have a question.
The circuit is composed of 3-String.
What do I do with unused LED pins?
Hello
If the string is open, I am concerned it will trigger a fault. Perhaps using a resistor to limit current through that string can keep the string in the operating condition and not trigger faults. But I will double check this and get back to you.
Best Regards,
Yu
Apologies for the last post, I stand corrected. Please follow below.
If Vin<22V, we suggest to float the unused LED4 pin, the Vout will kick OVP and mark-off the LED4 when power on, then MP3383 will work normally with 3 LED channels.
If Vin>22V, please connect the LED4 pin to Vin, the short LED protection will disable LED4 when power on.
Best Regards,
Yu