Suited for applications such as large LED billboards, the 32-channel LT3746 LED driver, integrated with a 55-V step-down controller, powers up to 30 mA of LED current for each channel, which can drive up to 13 V of LEDs in series. Each channel has individual 6-bit dot correction current adjustment and 12-bit grayscale PWM dimming.
Features include efficiencies over 90%, a cascadable 30-MHz serial data interface, and an input voltage of 6 to 55 V. Housed in a 56-lead QFN package, the part performs full diagnostics and protection against open/short LED and overtemperature faults, with the fault status sent via the serial data interface. (From $4.95 ea/1,000 — available now.)
By Christina Nickolas
Linear Technology , Milpitas , CA
Sales Office 408-428-2050
www.linear.com
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