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Demonstration/evaluation tool for CAT4016 16-channel constant-current LED driver

Posted: 13 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:CAT4016 application note? LED driver? evaluation tool?

This document describes the CAT4016 demonstration/evaluation tool for Catalyst Semiconductor's CAT4016 LED driver. The modular structure of this evaluation tool offers a flexible solution to demonstrate and evaluate the functionality and major parameters of the CAT4016 devices, including the daisy-chain connection. The CAT4016 is a 16-channel constant-current LED driver designed for billboard display and other general LED lighting applications. The driver is controlled through a high-speed serial interface, incorporating a 16bit serial to parallel shift register and data latch. A serial output data pin can be used to cascade multiple CAT4016 devices and programmed via the same serial interface. The LEDs are driven from the LED1 to LED16 outputs which provide 16 tightly matched current sinks. The LED current through each channel is set by the external RSET resistor. An enable input, BLANK, allows to turn off/on all the output drivers.

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