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Fault management ICs offer smarter, safer LED lighting

18 Oct 2012

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STMicroelectronics has announced a fault management chip targeting LED lights for critical applications such as vehicle lights, streetlamps and emergency lights. The LBP01 is used in lamps that comprise multiple channels each containing several LEDs. Without the LBP01, failure of a single LED can extinguish an entire channel, significantly reducing total light output and demanding early replacement, indicated the company.

The LBP01 bypasses failed LEDs so that the lamp can continue producing near-maximum illumination. This improves performance and safety, and can yield valuable savings for operators such as city authorities, as the total cost of replacing a streetlamp can be as much as $700, boasted ST.

The LBP01 delivers some important advantages over comparable devices in the market. By offering the flexibility to use one bypass for every two LEDs, it enables designers to reduce BOM costs, as competing devices typically can only bypass one LED each. It also provides built-in surge protection to help prevent LED failures occurring.

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The LBP01 can also be used to enhance LED-backlight longevity in LCD panels for a variety of applications. To maximise design-in opportunities, ST is offering the LBP01 in two package options giving designers the choice of a 3.95 x 5.6mm SMB package to replace competing devices directly or a 3 x 3.05mm SOT23-5 package enabling a more compact solution.

The LBP01 is in production priced from $0.19 in the SOT23-5 package or $0.21 in the SMB package, for orders over 1,000 pieces. Alternative pricing options for higher quantities are available on request.




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