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Dimmable SSLD powers up to 10 White LEDs

Thu, 05/15/2008 - 6:02am

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LT3593 SSLDOperating with an input from 2.7 to 5.5 V, the constant current LT3593 SSLD (solid-state lighting driver, or "sled") from Linear Technology  is designed to drive up to 10 white LEDs from a single Li-Ion cell at efficiencies over 80%. With a 1-MHz constant switching frequency and a ±5% reference accuracy, the device includes features such as a single digital control pin that enables set-and-forget LED dimming with ratios as high as 32:1. Additional features of the SSLD include a shutdown current of 3 µA as well as a high-side LED current sense topology that enables the LED cathode to be connected directly to ground, creating a single wire current source. The driver is available in a 6-lead 2mm² DFN or ThinSOT package.

Linear Technology
408-432-1900, www.linear.com

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