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Demonstration circuit DC2286A is a 36V, 2A synchronous 2MHz buck LED driver featuring the LT3932. It drives one or two series LEDs at 1A when VIN is between 8V and 36V. It can run down to 4VIN with a single LED (if UVLO is adjusted). DC2286A runs at 2MHz switching frequency. Spread spectrum frequency modulation (SSFM) can be turned on with a simple jumper, reducing EMI. DC2286A comes with low EMI features including optimized layout, SSFM, and input and output filters. It passes CISPR 25 class 5 conducted and radiated EMI. It is protected against both open and short LED conditions and reports the faults.

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