TI intros 16-channel constant current LED driver

Texas Instruments has introduced the TLC59282, a 16-Channel Constant Current LED Driver with 4-Channel Grouped Delay. According to the datasheet, this 24-pin SSOP device allows control of each channel individually controlled via a simple serial communications protocol that is compatible with 3.3 V or 5 V CMOS logic levels, depending on the operating VCC.

Once the serial data buffer is loaded, a rising edge on LATCH transfers the data to the LEDx outputs. The BLANK pin can be used to turn off all OUTn outputs during power-on and output data latching to prevent unwanted image displays during these times. The constant-current value of all 16 channels is set by a single external resistor. Multiple TLC59282s can be cascaded together (as diagrammed above) to control additional LEDs from the same processor.

Contemplated uses include video displays, message boards and illumination.

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  1. This is a nice part. I first heard about these late in 2010. They are fairly cheap (<$2 in unit qty.) and come in a friendly 24SSOP package with no hard to handle ground pad to solder (hmmm… wonder how hot they get?) The big let down is that these are really really hard to find. But they are new; so give TI some time to get some stock out to the Distributors.

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