Littelfuse Introduces PLED18 Series Open LED Protector That Keeps LED Strings Lighted at Lower Cost
New open LED protector protects up to four LEDs simultaneously, reducing parts count and cost
2010-05-31 09:00:00 CHICAGO, Illinois, May 31, 2010 – Littelfuse, Inc. (NASDAQ/NGS:LFUS) has introduced the PLED18 Series circuit protection device that increases LED lighting string reliability. This new device maintains LED string brightness while improving LED reliability for the growing market for outdoor LED lighting and high-intensity LED applications (one-, two-, or three-watt high-brightness LEDs with up to 1000 mA).
The PLED Series design is a voltage-triggered electronic shunt device that provides a current bypass in the case of a single LED failing into an open circuit condition. The design ensures against the loss of an entire string of LEDs due to the failure of a single LED. A single PLED18 Series device can protect up to four high-brightness LEDs, offering a lower cost option for enhanced reliability.
The PLED18 Series is RoHS compliant, and the small QFN chip scale package (CSP) option is ideal for space-constrained LED board applications.
PLED Series devices provide the most advanced protection Littelfuse offers for the new generation of outdoor-use LED lighting applications. Designed to serve applications such as LED advertising and traffic signs, roadway/pathway/ runway lighting, and aircraft and emergency lighting, PLED Series devices help assure reliability.
Compared against conventional LED protection measures, the Littelfuse PLED Series devices offer a simpler and more economical circuit design. For example, they help to reduce LED color unevenness, prevent voltage level sags in the power supply, and consume less energy than zener diodes used to perform similar protection functions.
Key features and advantages of the PLED18 Series device include:
- Brightness of the LED string is maintained if a single LED in the string fails open.
- Small QFN CSP footprint makes them inconspicuous and easy to place.
- A single PLED18 Series device may protect up to four high-brightness LEDs, offering a lower cost option for enhanced reliability
- 2-in-1 protection (open-defect protection, surge immunity protection feature).
- Open LED defects can be controlled without negatively affecting power supply voltage.
- Ideal for outdoor lighting fixtures where maintenance cost is high.
- Fast switching compatible with pulse width modulation supplies.
- Auto-reset after power cycle.
Availability
PLED18 Series samples are available now for order and sample request through authorized Littelfuse distributors worldwide. The PLED18 Series LED string protector devices are available 8-12 weeks ARO, in 5000-quantity reel packs for the QFN version and 2500 for the DO-214 SMB.
For More Information
For more information about the PLED Series, please visit the Littelfuse web site at http://www.littelfuse.com/led-protectors.html?cm_re=Live-_-home+icon-_-homepage+led+protectors or contact your local Littelfuse Technical Support expert.
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For circuit protection application design ideas, please visit the new Application Design Center section of the Littelfuse web site.
If you have questions or require technical support please contact the Littelfuse technical support hotline at 1-800-999-9445.
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About Littelfuse
Littelfuse is the worldwide leader in circuit protection, offering the industry’s broadest and deepest portfolio of circuit protection products and solutions. Backed by industry-leading technical support, design and manufacturing expertise Littelfuse products are vital components in virtually every product that uses electrical energy, including portable and consumer electronics, automobiles, industrial equipment and telecom/datacom circuits. In addition to its Chicago, Illinois, world headquarters, Littelfuse has over 20 sales, distribution, manufacturing and engineering facilities in the Americas, Europe and Asia. Technologies offered by Littelfuse include Fuses; Gas Discharge Tubes (GDTs); Positive Temperature Coefficient Devices (PTCs); Protection Relays; PulseGuard® ESD Suppressors; SIDACtor® Devices; Silicon Protection Arrays™(SPAs); Switching Thyristors; TVS Diodes and Varistors.
For more information, please visit the Littelfuse web site at www.littelfuse.com.
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