3-CHANNEL CONSTANT CURRENT LED DRIVERS

WITH PROGRAMMABLE PWM OUTPUTS

General Description 

        DM413 is a PWM enabled LED driver specifically designed for LED lighting or display applications. It incorporates shift registers, data latches, 3-channel constant current circuitry with current value set by 3 external resistors, and built-in oscillator for PWM functioning. Data and clock buffer outputs are designed for cascading another chip. Additionally the Output Polarity Reverse function is designed to adapt to more high power LED applications.

Features

l  Maximum constant current outputs: 100mA determined by three external resistors

l  Maximum sinking output voltage: 17V

l  Maximum serial-in clock frequency: 20 MHz

l  Built-in buffers for cascading clock and data to next driver

l  PWM free-running capability (refresh rate (~ 400 Hz) with internal oscillator (~ 6.5 MHz))

l  Selectable modes for PWM control:

    u8-bits luminance data with PWM current outputs (8 bits mode)

    u 8-bits luminance data and 6-bits global brightness data (14 bits mode)

    u8-bits luminance data and 5-bits individual color correction data (13 bits mode)

l  Output polarity reverse function

l  TTL/CMOS compatible input