The LM4970 is a LED driver with an audio synchronization mode that virtually eliminates
the need for real time software processing for LED lighting effects. The LM4970 includes three
individual PWM color LED drivers that provide up to 42mA of current drive for each PWM LED output.
The LM4970 features an audio synchronization mode where the audio input signal that is
mixed in from three audio inputs is filtered into three frequency bands, with each frequency band
assigned to a specific PWM LED driver.
The PWM LED drivers can also be directly programmed through an
I2C compatible interface for applications where user defined LED
pattern, color, and intensity programmability is a priority.
The LM4970 also features an audio input gain control which allows the user to increase
the gain if the audio input signal does not create a bright enough effect on the LEDs. The LM4970
is a feature rich LED driver that is available in a space saving 14 pin non-pullback WSON package.
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