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Adafruit 12-Channel 16-bit PWM LED Driver - SPI Interface

Control 12 channels of PWM, well done! Here is a breakout board that we think you will find useful. It uses the TLC59711 PWM driver chip. This chip can control 12 separate channels of 16-bit PWM output. Designed (and ideal) for precision LED control, this board is not good for driving servos. 

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Manufacturer: Adafruit

Manufacturer part number: 1455

Description:

Control 12 channels of PWM, well done! Here is a breakout board that we think you will find useful. It uses the TLC59711 PWM driver chip. This chip can control 12 separate channels of 16-bit PWM output. This board has been designed (and ideal) for precision LED control. It is not good for driving servos.

Only two "SPI" pins are required to send data (our Arduino library shows how to to use any digital microcontroller pins). Of real value, the design is completely chainable. As long as there's enough power for all the boards you can chain as many as you'd like. Each of the 12 outputs are constant-current and open drain. You can drive multiple LEDs in series, with a V+ anode supply of up to 17V. If you want to drive something that requires a digital input, you must use a pullup resistor from the drive pin to your logic level to create the full waveform. 

One resistor is used to set the current for each of the outputs, the constant current means that the LED brightness doesn't vary if the power supply dips. We use a 3.3K resistor for about 15mA but you can solder a thru-hole resistor over it if you'd like to change that value. Check theTLC59711 datasheet for details on resistor-to-current values. There's also a handy on-chip 3.3V regulator which you can use if you need a logic level regulator. 

A few extras are included to make this board easy to use: a green power-good LED, four mounting holes and a current-set resistor. A bit of 0.1" header is also included so you can solder it on and plug into a breadboard. 

To use: Power V+ with 5-17VDC, and connect ground to the common ground. Then send 3-5V logic SPI data on DIN (data in) and CLK (clock). Our Arduino library will get you started with blinking LEDs, install it and run the example code with the noted pin configuration. 

There's a typo in the silkscreen, the second R0 should be R1 - but you knew that already!

Technical Details:

Dimensions: 22.75mm / 0.89" x 28.38mm / 1.1" x 3mm / 0.1"

Weight: 2.13g

Product Video:

This product starts at 6:41.

  • TLC59711 datasheet
    Datasheet for the TLC59711 12 channel PWM driver used in Adafruit\'s breakout board 1455

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