TLC5927QPWPRQ1 datasheet by Texas Instruments

TLC5927QPWPRQ1 Frequently Asked Questions (FAQs)

• What is the maximum current that can be sourced or sunk by each output?
  The TLC5927QPWPRQ1 can source up to 25mA and sink up to 50mA per output, making it suitable for driving LEDs, relays, and other loads.
• How do I ensure that the device is properly powered and configured?
  Make sure to connect VCC to a stable 3.3V or 5V power supply, and tie the OE (Output Enable) pin high to enable the outputs. Also, ensure that the RST (Reset) pin is tied high or connected to a pull-up resistor to prevent accidental resets.
• What is the purpose of the REXT pin, and how do I use it?
  The REXT pin is used to set the current limit for each output. Connect a resistor (REXT) between the REXT pin and GND to set the current limit. The value of REXT determines the maximum current that can be sourced or sunk by each output.
• How do I sequence the outputs to prevent simultaneous switching and reduce EMI?
  Use the SCK (Serial Clock) and SIN (Serial Input) pins to daisy-chain multiple TLC5927QPWPRQ1 devices and sequence the outputs. This ensures that only one output switches at a time, reducing EMI and preventing simultaneous switching.
• What is the maximum frequency of the serial clock (SCK) input?
  The maximum frequency of the SCK input is 30 MHz, making it suitable for high-speed applications.