The MAX16824/MAX16825 three-channel LED driversoperate over a 6.5V to 28V input voltage range. Thesedevices provide three open-drain constant-current-sinkingoutputs that are rated to 36V and deliver up to150mA of current to each string of high-brightness LEDs(HB LEDs). The current at each output is programmableby means of an external current-sense resistor. TheMAX16824 features three PWM inputs that control theduty cycle of the output current, allowing a wide LEDdimming range to be implemented. The PWM inputsalso function as on/off control for each correspondingoutput. The MAX16825 offers a 4-wire serial interface, a3-bit shift register, and a 3-bit transparent latch. The serialinterface allows a microcontroller to configure the outputchannels using four inputs (DIN, CLK, LE, OE) and adata output (DOUT). DOUT allows multiple drivers to becascaded and operated together.
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