"Rare" TLC5947 chips available.
Right now (the time of this article) we're the only place you can buy these modules in small quantities and without an 18 to 22 week leadtime.
We currently have a surplus of TLC5947DAP chips, purchased for a series of upcoming new products. Due to worldwide semiconductor shortages, this particular chip has been nearly impossible to buy for more than half a year. We finally saw a roll of 2,000 appear on Arrow's website, and it could only be sold as a complete reel. Since there was really no other way to get the quantity we needed, we decided to buy the whole reel and then make half of it available as a service to the general (electronics hobbyist) public.
The TLC5947DAP (datasheet) is a powerful LED controller chip from Texas Instruments. It has 24 channels of individually-settable 12-bit PWM, each switching a current-controlled sink driver. The maximum current is set by a single external resistor for the whole chip. This makes the chip perfect for driving 24 LEDs with precise brightness control; ideal for controlling 8 RGB LEDs. The current sinks eliminate the need for external resistors for each LED, with correct supply voltage and heatsinking.
Check it out in our store: TLC5947
Submitted by Garrett on Wed, 02/03/2010 - 23:50.