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TLC5973D Datasheet(PDF) 10 Page - Texas Instruments |
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TLC5973D Datasheet(HTML) 10 Page - Texas Instruments |
10 / 34 page TLC5973 SBVS225B – MARCH 2013 – REVISED MAY 2014 www.ti.com 8 Detailed Description 8.1 Overview The TLC5973 is 3-channel, 50-mA, constant-current LED driver that can control LED on-time with pulse width modulation (PWM) in 4096 steps for grayscale (GS) control. A maximum of 68 billion colors can be generated with red, green, and blue LEDs connected to each constant-current output. Furthermore, a reference clock generator is implemented in the device, which means that the reference clock for PWM timing control is not required to be supplied from an external clock generator or controller. The device adopts a single-wire input or output system. Therefore, communication wire cost and communication wire failure are reduced. Further wire cost reduction can be attained when supplying power to the device. One wire can be eliminated because the device power can be generated from the LED power line with the internal shunt regulator. The device can reduce the amount of incorrect data writes because the one-write command is required to write GS data to the device. The maximum data transfer rate for the device is 3 Mbps. Therefore, GS data can be updated with a high refresh rate even if many devices are connected in series. The number of TLC5973 devices connected in series is not limited because the TLC5973 has an internal buffer that drives the output signal. 10 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated Product Folder Links: TLC5973 |
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