The maximum frequency of the clock input is 30 MHz, but it's recommended to keep it below 20 MHz for reliable operation.
The TLC5947DAPRG4 has a built-in thermal shutdown feature that turns off the device when it overheats. To handle this, you can monitor the TSD (Thermal Shutdown) pin, which goes low when the device is in thermal shutdown. You can then take corrective action, such as reducing the current or turning off the device.
For optimal performance, it's recommended to follow a star-ground layout, where all ground connections are connected to a central point. This helps to reduce noise and improve thermal performance. Additionally, keep the power supply lines separate from the signal lines, and use decoupling capacitors to filter out noise.
The TLC5947DAPRG4 uses a 12-bit grayscale data format, where each bit represents a specific brightness level. You can program the grayscale data using the GSCLK (Grayscale Clock) and GSIN (Grayscale Input) pins. The device has an internal shift register that loads the grayscale data, which is then used to control the output current.
The maximum output current per channel is 60 mA, but it's recommended to keep it below 40 mA for reliable operation and to prevent overheating.
TLC5947DAPRG4 datasheet
by Texas Instruments
