Product category:
Power Supply ICs and Controllers
News Release from: Catalyst Semiconductor | Subject: CAT4008
Edited by the Electronicstalk Editorial
Team on 17 January 2008
LED driver runs displays at low voltages
Eight-channel constant-current sink LED driver is designed for billboard, marquee, instrument and other large general-purpose LED displays.
Catalyst Semiconductor has expanded its recently introduced family of large LED video display drivers with the new CAT4008, an eight-channel, constant-current sink LED driver for billboard, marquee, instrument and other large, general-purpose LED displays The CAT4008 joins Catalyst's CAT4016, 16-channel, constant-current LED driver introduced in October 2007
This article was originally published on Electronicstalk on 7 Feb 2002 at 8.00am (UK)
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The CAT4008 LED channels can operate with an output voltage on the LED pins as low as 0.4V (for 2 to 100mA LED current), to enable more power-efficient designs.
The nominal LED current is set by an external resistor.
A high-speed four-wire serial interface with up to 25MHz clock frequency, controls each of the eight channels 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 CAT4008 features a blanking control pin, which can be used to disable all channels independently of the interface.
Additionally, on-chip thermal shutdown protection disables the LED outputs if the die temperature exceeds a set limit.
The CAT4008 is available in a 16-lead 150mil SOIC package and offers a replacement for popular devices from Macroblock, Toshiba and others.
The CAT4008 LED driver is priced at US $0.49 each in 10,000 piece quantities.
Samples of the CAT4008 are available now.
Projected lead-time for production quantities is currently 6 to 8 weeks ARO.
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