For a robust design, engineers must calculate the protection thresholds based on the MP3378E Datasheet specifications: Typical Threshold VOVP_OVcap V sub cap O cap V cap P _ cap O cap V end-sub LEDX Regulation Voltage VLEDXcap V sub cap L cap E cap D cap X end-sub 800 mV (at 330 mA) LEDX Over-Voltage Threshold
stands for Universal Protection Detect . Unlike standard fault pins (e.g., OVP, SCP), the UPD pin is a dual-function, configurable protection input . It allows the designer to connect various external fault detection circuits (e.g., over-temperature, over-voltage, external over-current, or even mechanical switch sensors) into a single, unified shutdown mechanism for the MP3378E. mp3378e protection pin upd
Includes and recoverable thermal shutdown. Short Protection For a robust design, engineers must calculate the
: The IC monitors individual LED strings. If a string is detected as open or shorted, it can disable that specific string while keeping others active, or shut down depending on the severity. Thermal Protection Includes and recoverable thermal shutdown
: While primarily for setting the LED current, this pin also detects faults. An open or shorted ISET resistor will trigger protection mechanisms to disable the WLED driver.