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Optoelectronics/Displays??

Open protector secures control path during LED failure

Posted: 03 Nov 2008 ?? ?Print Version ?Bookmark and Share

Keywords:LED? automotive lighting?

Littelfuse Inc. has launched the PLED 6 series, an open LED protector that uses a switching electronic shunt path when a single LED in an array fails as an open circuit. This secures that the wide array of LEDs will function even if one LED in the array is dysfunctional.

The open LED protector enables LED lighting makers design for critical-reliability, hostile-environment applications such as automotive headlights, traffic lights, bridge lighting and aircraft runway lighting.

The LED open circuit protector has a current range of 300mA to 1A, and a low on-state voltage of 1.5V. Low off-state current minimizes power dissipation and reduces the heating impact on LEDs, which are delicate solid-state devices that can be easily damaged by current surges and transients.

The series open LED protector employs a four-layered thyristor system that automatically resets if the LED heals itself or is replaced and also has built-in surge immunity. Its environmentally friendly package is RoHS-compliant and halogen-free.

The PLED 6 series is available in two SMTs: DO-214 and QFN.

- Ismini Scouras
eeProductCenter





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