Suited for billboard, marquee, instrument, and other large general–urpose LED displays, the eight-channel CAT4008 constant-current sink LED driver operates with an output voltage on the LED pins of 0.4 V (for 2 to 100-mA LED current). The nominal LED current is set by an external resistor.
A high-speed four-wire serial interface with up to 25-MHz clock frequency, controls each of the eight channels using a shift register and latch configuration. Housed in 16-lead SOIC, the part features 300-mV LED dropout at 30 mA, thermal shutdown protection, and a blanking control pin, which can be used to disable all channels independently of the interface. ($0.49 ea/10,000—prod qty, 6 to 8 weeks ARO.)
Catalyst Semiconductor , Sunnyvale , CA
Information 408-542-1000
http://www.catsemi.com
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