which will result in reduced LED intensity. A PWM frequency

setting of 60Hz results in an optimal balance between LED

accuracy and intensity.

DRIVING RGB LED MODULES

The LM4970’s PWM LED outputs can be used to drive

individual color LEDs or RGB LED modules. When driving

RGB LED modules in audio synchronization mode, the color

and intensity of the RGB LED module will be dependent on

the audio input signal. In I

module can be set to any of seven distinct colors, based on

the status of the I2C_LED1, I2C_LED2, and I2C_LED3 bit

settings.

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FIGURE 4. Reference Design Board Schematic

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