PCA9634PW datasheet by NXP Semiconductors

PCA9634PW Frequently Asked Questions (FAQs)

• What is the maximum frequency of the PWM output?
  The maximum frequency of the PWM output is 1.67 kHz, but it can be adjusted using the TOTPER register.
• How do I configure the PCA9634PW for a specific LED current?
  You need to set the LED current using the I2C interface by writing to the LEDOx registers. The current is set in steps of 0.5 mA, and the maximum current is 60 mA.
• Can I use the PCA9634PW to drive LEDs with different current requirements?
  Yes, the PCA9634PW has four independent LED drivers, each of which can be set to a different current. This allows you to drive LEDs with different current requirements.
• What is the purpose of the OSCI pin?
  The OSCI pin is an oscillator input pin that allows you to connect an external oscillator to the PCA9634PW. This can be used to synchronize the PWM output with an external clock signal.
• How do I reset the PCA9634PW?
  The PCA9634PW can be reset by pulling the RESET pin low for at least 1 ms. This will reset all registers to their default values.