Maxim provides LED drivers with PWM intensity control

Maxim provides LED drivers with PWM intensity control for applications.

Using the serial interface to send the LED driver a command to change the register bits for the corresponding LED，the intensity can be normally controlled.

The number of bits ranges from 4 to 8bits, equals to 16 to 256 intensity levels. Other Maxim LED drivers are carried out by adjusting the amount of the constant current sinking through an open-drain LED port.

This additional PWM intensity control not only can be applied to constant-current LED drivers by using a switched-LED power supply, but also be emulated by refreshing data bits. In addition, LED drivers with built-in PWM can also benefit from additional, external PWM intensity control if clocks regulating these PWM signals can be synchronized.

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