LED Driver for large video displays

16th October 2007
ES Admin
The first in a new family of devices designed for use with large LED video displays, the new CAT4016 from Solid State Supplies is a 16-channel, constant-current sink LED driver designed for billboard, marquee, instrument and other larger, general-purpose LED displays for both indoor and outdoor applications.
Providing LED channels which can operate with an output voltage as low as 0.4V (for 2mA to 100mA LED current), to enable more power-efficient designs, the maximum LED current on the device is set by an external resistor. A high-speed, four-wire serial interface with up to 25MHz clock frequency controls each individual channel using a shift register and latch configuration. A serial output data pin allows multiple devices to be cascaded and programmed via one serial interface.

The CAT4016 also features a thermal shutdown protection function to disable the LED outputs if the die temperature exceeds a set limit. A direct replacement for other popular devices, the CAT4016 is available in a wide range of package options including 24-lead SOIC, TSSOP, QSOP and TQFN (4 x 4mm).

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