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August , 2011, REV1.0
BCT3228 preliminary
8 Channel LED Driver (Common-Anode & Common-Cathode)
Low Dropout Current Source & Current Sink
General Description
The BCT3228 is a high performance 8 channel white LED driver. The BCT3228 uses two internal resistor to set the bias current for four LEDs. The BCT3228's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency. The BCT3228 requires only a 50mV dropout voltage at a 20mA load on each output to match the LED brightness.
By using two SEL pin, the BCT3228 can support to drive 8 parallel Co-Anode or Co-Cathode white LEDs and regulates a constant current for uniform intensity.
BCT3228 Datasheet
