: If one LED string is disconnected, the voltage on the OVP pin will rise rapidly, triggering a shutdown.
Protects against thermal runaway and power surges . mp3378e protection pin upd
Specialized protection for inductor and diode short circuits. : If one LED string is disconnected, the
This is not merely a story of a pin; it is a story of the transition from passive anxiety to active guardianship. This is not merely a story of a
[System powers on] | v [PROT pin ramps 0V → 0.8V?] ---No---> [Check C_PROT soldering; replace with 22nF-100nF] | Yes | v [VOUT rises. PROT pin hits 2.0V?] ---Yes---> [OVP trip. Increase C_PROT or lower output target] | No | v [Backlight turns on. Stable operation.]
Use a resistor divider between the boost output and ground. Calculate the resistors so that the OVP pin reaches ~1.2V only when the output is at its maximum safe limit.
Bypassing protection can cause permanent damage to the LEDs or the driver if an actual short circuit exists . Current Adjustment: