PLEDxUx Unidirectional Series Open LED Protectors


Littelfuse's unidirectional open LED protector offers reverse battery/power polarity protection

The PLEDxUx unidirectional series open LED protector provides a switching electronic shunt path when one LED in a string fails as an open circuit. PLED devices are connected in parallel with each LED in a series string. If one LED fails as an open circuit, the PLED connected to it turns on and carries the current that would have gone through the failed LED, so the remainder of the string continues to function. LEDs cannot withstand voltages of reverse polarity; the PLEDxUX series provides reverse battery/power polarity protection for greater LED reliability.


PLED Devices - Open LED Protector
Features
  • Electronic shunt/bypass for open LEDs
  • Reverse battery/power protection
  • Fast switching
  • Small-footprint, DO-214AA or QFN package
  • Automatically resets after power cycle
  • RoHS compliant
Benefits
  • Enables LED strings to continue to function even if one LED fails as an open circuit
  • Prevents accidental reversal of battery/power polarity because LEDs cannot survive reverse polarity voltages
  • Capable of PWM frequencies up to 10 kHz
  • Provides layout flexibility; maximum heat dissipation makes it ideal for dense board applications
  • Low maintenance, high reliability operation
  • Environmentally-friendly product

PLEDxUx Unidirectional Series

Manufacturer Part Number Description Available Quantity Datasheets
PLED6US LED PROTECTOR UNI 6V DO214 2L 96
PLED9US LED PROTECTOR UNI 9V DO214 2L 2480
PLED13US LED PROTECTOR UNI 13V DO214 2L 2500
PLED18US LED PROTECTOR UNI 18V DO214 2L 2500
PLED6UQ12 LED PROTECTOR UNI 6V QFN 3X3 2L 100
PLED9UQ12 LED PROTECTOR UNI 9V QFN 3X3 2L 5000
PLED13UQ12 LED PROTECTOR UNI 13V QFN 3X3 2L 5000
PLED18UQ12 LED PROTECTOR UNI 18V QFN 3X3 2L 5000