Catalyst Semi Addresses Large LED Video Displays With 16-Channel Constant-Current LED Driver
Catalyst Semiconductor, Inc. announced that it has expanded its LED drivers with the first in a new family of devices to address large LED video displays. The new CAT4016 is a 16-channel, constant-current sink LED driver designed for billboard, marquee, instrument and other larger, general-purpose LED displays in both indoor and outdoor applications.
The CAT4016 LED channels can operate with an output voltage as low as 0.4V (for 2 to 100mA LED current), to enable more power-efficient designs. The maximum LED current 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 replacement for devices from Macroblock, Toshiba and others, the CAT4016 is available in a wide range of package options including 24-lead SOIC, TSSOP, QSOP and TQFN (4 x 4mm).
The CAT4016 LED driver is priced at $0.54 each in 10,000 piece quantities. Samples of the CAT4016 are available now Projected lead-time for production quantities is currently 6 to 8 weeks ARO.
