: If a string is open, its LEDx pin voltage drops to near zero while the output voltage hits the OVP threshold; the IC then disables that specific string.
The MP3378E uses latch-off (not auto-recovery) for UPD faults. Once triggered, only power cycling VCC or toggling the EN pin will reset the IC. mp3378e protection pin upd
If the buck converter experiences an over-current event, it enters "hiccup mode," where it periodically attempts to restart until the fault is cleared, reducing average power stress. : If a string is open, its LEDx
If one string is faulty, grounding that specific LED channel pin through a resistor can sometimes trick the IC into ignoring that string's fault. Technical Specifications If the buck converter experiences an over-current event,
Based on the component naming convention, the typically refers to the Monolithic Power Systems (MPS) MP3378 , a popular 8-string WLED driver controller.
The monitors the output voltage of the step-up converter via a resistive divider.